增加: 03_SPI总线设备驱动模型

IMX6ULL/doc_pic/11_SPI/03_SPI总线设备驱动模型.md

@@ -3,11 +3,17 @@
 参考资料：
 
 * 内核头文件：`include\linux\spi\spi.h`
+
 * 百问网驱动直播课里对应的源码
   * GIT仓库：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
   * 源码位置：
     ![image-20220217163558763](pic/10_ref_code.png)
   
+* 上述源码也放到了驱动大全的GIT仓库里，位置如下：
+  ![image-20220224174405587](pic/16_ref_code.png)
+
+  
+
 ## 1. 回顾平台总线设备驱动模型
 
 Linux驱动程序开始基于"平台总线设备驱动"模型，把驱动程序分成2边：

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/doc_pic/06_总线设备驱动模型彻底分析.md

@@ -0,0 +1,34 @@
+## 总线设备驱动模型彻底分析
+
+Linux在线培训班的预习资料等，放在GIT仓库里。
+
+GIT仓库地址：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
+
+GIT使用说明：https://download.100ask.org/tools/Software/git/how_to_use_git.html
+
+**注意**：GIT仓库地址无法在浏览器中直接访问，必须使用GIT工具。
+
+
+
+### 1. 预习视频
+
+跟上次课的视频一样：
+
+![image-20211119234511274](pic/06_platform_detail/01_driver_video.png)
+
+![image-20211119234645373](pic/06_platform_detail/02_vides.png)
+
+
+
+### 2. 示例代码
+
+代码在GIT仓库中：
+
+![image-20211123153247720](pic/06_platform_detail/03_source.png)
+
+
+
+### 3. 详细分析
+
+详细分析led_dev.c, led_drv.c中的代码。
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/Makefile

@@ -0,0 +1,17 @@
+ARCH=x86
+CROSS_COMPILE=
+
+KVERSION = $(shell uname -r)
+KERN_DIR =  /lib/modules/$(KVERSION)/build 
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order
+
+obj-m	+= led_drv.o
+obj-m	+= led_dev.o
+obj-m	+= led_dev2.o
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev.c

@@ -0,0 +1,63 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(1),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev2.c

@@ -0,0 +1,64 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(2),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led_second",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+	.driver_override = "100ask_led",
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev3.c

@@ -0,0 +1,63 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(3),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led_3",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_drv.c

@@ -0,0 +1,180 @@
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+
+#include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+
+
+#define LED_MAX_CNT 10
+
+struct led_desc {
+	int pin;
+	int minor;
+};
+
+/* 1. 确定主设备号 */ 
+static int major = 0;
+static struct class *led_class;
+
+static int g_ledcnt = 0;
+static struct led_desc leds_desc[LED_MAX_CNT];
+
+
+
+/* 3. 实现对应的open/read/write等函数，填入file_operations结构体                   */
+static ssize_t led_drv_write (struct file *file, const char __user *buf, size_t size, loff_t *offset)
+{
+	int err;
+	char status;
+	struct inode *inode = file_inode(file);
+	int minor = iminor(inode);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	err = copy_from_user(&status, buf, 1);
+
+	/* 根据次设备号和status控制LED */
+	printk("set led pin 0x%x as %d\n", leds_desc[minor].pin, status);
+	
+	return 1;
+}
+
+static int led_drv_open (struct inode *node, struct file *file)
+{
+	int minor = iminor(node);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* 根据次设备号初始化LED */
+	printk("init led pin 0x%x as output\n", leds_desc[minor].pin);
+	
+	return 0;
+}
+
+
+/* 2. 定义自己的file_operations结构体                                              */
+static struct file_operations led_drv = {
+	.owner	 = THIS_MODULE,
+	.open    = led_drv_open,
+	.write   = led_drv_write,
+};
+
+/* B.1 实现platform_driver的probe函数  */
+static int led_probe(struct platform_device *pdev)
+{	
+	int minor;
+	int i = 0;
+
+	struct resource *res;
+		
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, i++);
+	if (!res)
+		return -EINVAL;
+
+	/* 记录引脚 */
+	minor = g_ledcnt;
+	leds_desc[minor].pin = res->start;
+	leds_desc[minor].minor = minor;
+
+	/* 7.2 辅助信息 */
+	/* 创建设备节点 */
+	device_create(led_class, NULL, MKDEV(major, minor), NULL, "100ask_led%d", minor); /* /dev/100ask_led0,1,... */
+	
+	platform_set_drvdata(pdev, &leds_desc[minor]);
+	
+	g_ledcnt++;
+	
+    return 0;
+}
+
+/* B.2 实现platform_driver的remove函数  */
+static int led_remove(struct platform_device *pdev)
+{
+	struct led_desc *led = platform_get_drvdata(pdev);
+
+	device_destroy(led_class, MKDEV(major, led->minor)); /* /dev/100ask_led0,1,... */
+
+    return 0;
+}
+
+static const struct platform_device_id led_id_table[] = {
+	{"100ask_led",   1},
+	{"100ask_led_3", 2},
+	{"100ask_led_4", 3},
+	{ },
+};
+
+
+/* A. 实现platform_driver  */
+static struct platform_driver led_driver = {
+    .probe      = led_probe,
+    .remove     = led_remove,
+    .driver     = {
+        .name   = "100ask_led",
+    },
+    .id_table = led_id_table,
+};
+
+
+
+/* 4. 把file_operations结构体告诉内核：注册驱动程序register_chrdev                                */
+/* 5. 谁来注册驱动程序啊？得有一个入口函数：安装驱动程序时，就会去调用这个入口函数 */
+static int __init led_init(void)
+{
+	int err;
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	major = register_chrdev(0, "100ask_led", &led_drv);  /* /dev/led */
+
+
+	/* 7.1 辅助信息 */
+	led_class = class_create(THIS_MODULE, "100ask_led_class");
+	err = PTR_ERR(led_class);
+	if (IS_ERR(led_class)) {
+		printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+		unregister_chrdev(major, "led");
+		return -1;
+	}
+
+	/* C. 注册platform_driver	*/
+    err = platform_driver_register(&led_driver); 
+    
+    return err;
+}
+
+/* 6. 有入口函数就应该有出口函数：卸载驱动程序时，就会去调用这个出口函数           */
+static void __exit led_exit(void)
+{
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* C. 反注册platform_driver	*/
+    platform_driver_unregister(&led_driver); 
+
+	class_destroy(led_class);
+	unregister_chrdev(major, "100ask_led");
+}
+
+
+/* 7. 其他完善：提供设备信息，自动创建设备节点                                     */
+
+module_init(led_init);
+module_exit(led_exit);
+
+MODULE_LICENSE("GPL");
+
+

IMX6ULL/source/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/ledtest.c

@@ -0,0 +1,50 @@
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * ./ledtest /dev/100ask_led0 on
+ * ./ledtest /dev/100ask_led0 off
+ */
+int main(int argc, char **argv)
+{
+	int fd;
+	char status;
+	
+	/* 1. 判断参数 */
+	if (argc != 3) 
+	{
+		printf("Usage: %s <dev> <on | off>\n", argv[0]);
+		return -1;
+	}
+
+	/* 2. 打开文件 */
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1)
+	{
+		printf("can not open file %s\n", argv[1]);
+		return -1;
+	}
+
+	/* 3. 写文件 */
+	if (0 == strcmp(argv[2], "on"))
+	{
+		status = 1;
+		write(fd, &status, 1);
+	}
+	else
+	{
+		status = 0;
+		write(fd, &status, 1);
+	}
+	
+	close(fd);
+	
+	return 0;
+}
+
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/doc_pic/07_设备树入门.md

@@ -0,0 +1,22 @@
+## 07_设备树入门
+
+Linux在线培训班的预习资料等，放在GIT仓库里。
+
+GIT仓库地址：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
+
+GIT使用说明：https://download.100ask.org/tools/Software/git/how_to_use_git.html
+
+**注意**：GIT仓库地址无法在浏览器中直接访问，必须使用GIT工具。
+
+
+
+### 1. 预习视频
+
+跟上次课的视频一样：
+
+![image-20211119234511274](pic/07_device_tree/01_driver_video.png)
+
+![image-20211125145343625](pic/07_device_tree/02_videos.png)
+
+
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/doc_pic/100ask_imx6ull-14x14.dts

@@ -0,0 +1,937 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "imx6ull.dtsi"
+
+/ {
+    model = "Freescale i.MX6 ULL 14x14 EVK Board";
+    compatible = "fsl,imx6ull-14x14-evk", "fsl,imx6ull";
+
+       myled: myled_for_test {
+                pin = "gpio5_3";
+        };
+
+        myled_ok: myled_for_test_ok {
+                compatible = "100ask,led";
+                pin = "gpio5_3";
+        };
+
+
+    chosen {
+        stdout-path = &uart1;
+    };
+
+    memory {
+        reg = <0x80000000 0x20000000>;
+    };
+
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        linux,cma {
+            compatible = "shared-dma-pool";
+            reusable;
+            size = <0x14000000>;
+            linux,cma-default;
+        };
+    };
+
+    backlight {
+        compatible = "pwm-backlight";
+        pwms = <&pwm1 0 1000>;
+        brightness-levels = <0 1 2 3 4 5 6 8 10>;
+        default-brightness-level = <8>;
+        status = "okay";
+    };
+
+    pxp_v4l2 {
+        compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2";
+        status = "okay";
+    };
+
+    regulators {
+        compatible = "simple-bus";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        reg_can_3v3: regulator@0 {
+            compatible = "regulator-fixed";
+            reg = <0>;
+            regulator-name = "can-3v3";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+        };
+
+        reg_usb_ltemodule: regulator@1 {
+            compatible = "regulator-fixed";
+            regulator-name = "ltemodule-pwr";
+            regulator-min-microvolt = <3800000>;
+            regulator-max-microvolt = <3800000>;
+            gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
+            enable-active-high;
+            regulator-boot-on;
+        };
+
+        reg_gpio_wifi: regulator@2 {
+            compatible = "regulator-fixed";
+            regulator-name = "wifi-pwr";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+            gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+            regulator-boot-on;
+        };
+
+    };
+
+    leds {
+        compatible = "gpio-leds";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_leds>;
+        
+        status = "disabled";
+
+        led0: cpu {
+            label = "cpu";
+            gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+            default-state = "on";
+            linux,default-trigger = "heartbeat";
+        };
+    };
+
+    gpio-keys {
+        compatible = "gpio-keys";
+        pinctrl-names = "default";
+
+        user1 {
+            label = "User1 Button";
+            gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_1>;
+        };
+        
+        user2 {
+            label = "User2 Button";
+            gpios = <&gpio4 14 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_2>;
+        };
+    };
+    sound {
+            compatible = "fsl,imx6ul-evk-wm8960",
+                     "fsl,imx-audio-wm8960";
+            model = "wm8960-audio";
+            cpu-dai = <&sai2>;
+            audio-codec = <&codec>;
+            asrc-controller = <&asrc>;
+            codec-master;
+            gpr = <&gpr 4 0x100000 0x100000>;
+            hp-det = <3 0>;
+            /*hp-det-gpios = <&gpio5 4 0>;
+            mic-det-gpios = <&gpio5 4 0>;*/
+            audio-routing =
+                "Headphone Jack", "HP_L",
+                "Headphone Jack", "HP_R",
+                "Ext Spk", "SPK_LP",
+                "Ext Spk", "SPK_LN",
+                "Ext Spk", "SPK_RP",
+                "Ext Spk", "SPK_RN",
+                "LINPUT2", "Mic Jack",
+                "LINPUT3", "Mic Jack",
+                "RINPUT1", "Main MIC",
+                "RINPUT2", "Main MIC",  
+                "Mic Jack", "MICB",
+                "Main MIC", "MICB",
+                "CPU-Playback", "ASRC-Playback",
+                "Playback", "CPU-Playback",
+                "ASRC-Capture", "CPU-Capture",
+                "CPU-Capture", "Capture";
+                status = "okay";
+        };
+    
+    spi4 {
+        compatible = "spi-gpio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_spi4>;
+        pinctrl-assert-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
+        status = "okay";
+        gpio-sck = <&gpio5 11 0>;
+        gpio-mosi = <&gpio5 10 0>;
+        cs-gpios = <&gpio5 7 0>;
+        num-chipselects = <1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        gpio_spi: gpio_spi@0 {
+            compatible = "fairchild,74hc595";
+            gpio-controller;
+            #gpio-cells = <2>;
+            reg = <0>;
+            registers-number = <1>;
+            registers-default = /bits/ 8 <0x57>;
+            spi-max-frequency = <10000>;
+        };
+    };
+    
+    sii902x_reset: sii902x-reset {
+            compatible = "gpio-reset";
+            reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
+            reset-delay-us = <100000>;
+            #reset-cells = <0>;
+            status = "okay";
+        };
+
+};
+
+&gpmi{
+    status = "disabled";
+};
+&cpu0 {
+    arm-supply = <&reg_arm>;
+    soc-supply = <&reg_soc>;
+};
+
+&clks {
+    assigned-clocks = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <786432000>;
+};
+
+&fec1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet1>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy0>;
+    phy-reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+};
+
+&fec2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet2>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy1>;
+    phy-reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ethphy0: ethernet-phy@0 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <0>;
+        };
+        ethphy1: ethernet-phy@1 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <1>;
+        };
+    };
+};
+
+&flexcan1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_flexcan1>;
+    xceiver-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+&gpc {
+    fsl,cpu_pupscr_sw2iso = <0x1>;
+    fsl,cpu_pupscr_sw = <0x0>;
+    fsl,cpu_pdnscr_iso2sw = <0x1>;
+    fsl,cpu_pdnscr_iso = <0x1>;
+    fsl,ldo-bypass = <0>; /* DCDC, ldo-enable */
+};
+
+&i2c1 {
+    clock-frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c1>;
+    status = "okay";
+};
+
+&i2c2 {
+    clock_frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c2>;
+    status = "okay";
+
+    codec: wm8960@1a {
+        compatible = "wlf,wm8960";
+        reg = <0x1a>;
+        clocks = <&clks IMX6UL_CLK_SAI2>;
+        clock-names = "mclk";
+        wlf,shared-lrclk;
+        };
+         sii902x: sii902x@39 {
+                 compatible = "SiI,sii902x";
+                 pinctrl-names = "default";
+                 reset-names="sii902x";
+                 pinctrl-0 = <&pinctrl_sii902x>;
+                 resets = <&sii902x_reset>;
+                 interrupt-parent = <&gpio1>;
+                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+                 mode_str ="1280x720M@60";
+                 bits-per-pixel = <16>;
+                 reg = <0x39>;
+                 status = "okay";    
+         };
+
+
+        gt9xx@5d {
+                compatible = "goodix,gt9xx";
+                reg = <0x5d>;
+                status = "okay";
+                interrupt-parent = <&gpio1>;
+                interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinctrl_tsc_reset &pinctrl_touchscreen_int>;
+                /*pinctrl-1 = <&pinctrl_tsc_irq>;*/
+                /*pinctrl-names = "default", "int-output-low", "int-output-high", "int-input";
+                pinctrl-0 = <&ts_int_default>;
+                pinctrl-1 = <&ts_int_output_low>;
+                pinctrl-2 = <&ts_int_output_high>;
+                pinctrl-3 = <&ts_int_input>;
+                */
+                reset-gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
+                irq-gpios = <&gpio1 5 IRQ_TYPE_EDGE_FALLING>;
+                irq-flags = <2>;                /*1:rising 2: falling*/
+
+                touchscreen-max-id = <5>;
+                touchscreen-size-x = <800>;
+                touchscreen-size-y = <480>;
+                touchscreen-max-w = <1024>;
+                touchscreen-max-p = <1024>;
+                /*touchscreen-key-map = <172>, <158>;*/ /*KEY_HOMEPAGE, KEY_BACK*/
+
+                goodix,type-a-report = <0>;
+                goodix,driver-send-cfg = <0>;
+                goodix,create-wr-node = <1>;
+                goodix,wakeup-with-reset = <0>;
+                goodix,resume-in-workqueue = <0>;
+                goodix,int-sync = <0>;
+                goodix,swap-x2y = <0>;
+                goodix,esd-protect = <0>;
+                goodix,pen-suppress-finger = <0>;
+                goodix,auto-update = <0>;
+                goodix,auto-update-cfg = <0>;
+                goodix,power-off-sleep = <0>;
+
+                /*7*/
+                goodix,cfg-group0 = [
+                6b 00 04 58 02 05 0d 00 01 0f 
+                28 0f 50 32 03 05 00 00 00 00 
+                00 00 00 00 00 00 00 8a 2a 0c 
+                45 47 0c 08 00 00 00 40 03 2c 
+                00 01 00 00 00 03 64 32 00 00 
+                00 28 64 94 d5 02 07 00 00 04 
+                95 2c 00 8b 34 00 82 3f 00 7d 
+                4c 00 7a 5b 00 7a 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 18 16 14 12 10 0e 0c 0a 
+                08 06 04 02 ff ff 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 16 18 1c 1d 1e 1f 20 21 
+                22 24 13 12 10 0f 0a 08 06 04 
+                02 00 ff ff ff ff ff ff 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 79 01
+                ];
+
+                /*4.3*/
+                goodix,cfg-group1 = [
+                97 E0 01 10 01 05 0D 00 01 00
+                00 05 5A 46 53 11 00 00 11 11
+                14 14 14 22 0A 04 00 00 00 00
+                00 00 53 00 14 00 00 84 00 00
+                3C 00 00 64 1E 28 87 27 08 32
+                34 05 0D 20 33 60 11 02 24 00
+                00 64 80 80 14 02 00 00 54 89
+                68 85 6D 82 72 80 76 7D 7B 7B
+                00 00 00 00 00 00 00 F0 50 3C
+                FF FF 07 00 00 00 02 14 14 03
+                04 00 21 64 0A 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                32 20 50 3C 3C 00 00 00 00 00
+                0D 06 0C 05 0B 04 0A 03 FF FF
+                FF FF FF FF 00 01 02 03 04 05
+                06 07 08 09 0A 0B 0C 0D FF FF
+                FF FF FF FF FF FF FF FF FF FF
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 3C 00 05 1E 00 02
+                2A 1E 19 14 02 00 03 0A 05 00
+                00 00 00 00 00 00 01 FF FF 86
+                22 03 00 00 33 00 0F 00 00 00
+                50 3C 50 00 00 00 00 2A 01
+                ];
+
+                /*5*/
+                goodix,cfg-group2 = [
+                00 20 03 E0 01 05 3C 00 01 08
+                28 0C 50 32 03 05 00 00 00 00
+                00 00 00 17 19 1E 14 8B 2B 0D
+                33 35 0C 08 00 00 00 9A 03 11
+                00 01 00 00 00 00 00 32 00 00
+                00 20 58 94 C5 02 00 00 00 04
+                B0 23 00 93 2B 00 7B 35 00 69
+                41 00 5B 4F 00 5B 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 02 04 06 08 0A 0C 0E 10
+                12 14 16 18 1A FF 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 02 04 06 08 0A 0C 0F
+                10 12 13 16 18 1C 1D 1E 1F 20
+                21 22 24 26 FF FF FF FF 00 00
+                00 FF FF FF FF FF FF FF FF FF
+                FF FF FF FF 48 01
+                ];
+
+        };
+
+
+};
+
+&iomuxc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_hog_1>;
+    imx6ul-evk {
+        pinctrl_hog_1: hoggrp-1 {
+            fsl,pins = <
+                MX6UL_PAD_UART1_RTS_B__GPIO1_IO19   0x17059 /* SD1 CD */
+                MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID    0x17059 /* USB OTG1 ID */
+                // MX6UL_PAD_CSI_DATA07__GPIO4_IO28           0x000010B0
+                MX6ULL_PAD_SNVS_TAMPER5__GPIO5_IO05        0x000110A0
+            >;
+        };
+                pinctrl_sii902x: hdmigrp {
+                fsl,pins = <
+                        MX6UL_PAD_UART1_CTS_B__GPIO1_IO18 0x59
+                            >;
+            };
+                pinctrl_touchscreen_int: lcdif_tsc_int {
+                fsl,pins = <
+                        MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x000010B0
+                            >;
+                        };
+        pinctrl_enet1: enet1grp {
+            fsl,pins = <
+            >;
+        };
+
+        pinctrl_enet2: enet2grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO06__ENET2_MDIO    0x1b0b0
+                MX6UL_PAD_GPIO1_IO07__ENET2_MDC     0x1b0b0
+                MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2  0x4001b031
+                MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b031
+            >;
+        };
+
+        pinctrl_flexcan1: flexcan1grp{
+            fsl,pins = <
+                MX6UL_PAD_UART3_CTS_B__FLEXCAN1_TX         0x000010B0
+                MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX         0x000010B0
+            >;
+        };
+
+        pinctrl_i2c1: i2c1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART4_TX_DATA__I2C1_SCL 0x4001b8b0
+                MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_i2c2: i2c2grp {
+            fsl,pins = <
+                MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0
+                MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_ecspi3: ecspi3 {              
+                    fsl,pins = <
+                MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI         0x000010B0
+                MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO         0x000010B0
+                MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK       0x000010B0
+                //MX6UL_PAD_UART2_TX_DATA__ECSPI3_SS0        0x000010B0
+                MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20        0x000010B0
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01           0x000010B0
+            >;
+        };
+
+        pinctrl_ecspi1: ecspi1 {
+                     fsl,pins = <
+                 MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK         0x000010B0
+                 MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI         0x000010B0
+                 MX6UL_PAD_CSI_DATA07__ECSPI1_MISO         0x000010B0
+                 MX6UL_PAD_CSI_DATA05__GPIO4_IO26          0x000010B0
+                 MX6UL_PAD_CSI_DATA03__GPIO4_IO24          0x000010B0
+             >;
+         };
+
+        pinctrl_uart3: uart3grp {
+            fsl,pins = <
+                MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX   0x1b0b1
+                MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX   0x1b0b1
+            >;
+        };
+        
+        pinctrl_uart1: uart1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+                MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+            >;
+        };
+
+        pinctrl_uart6: uart6grp {
+             fsl,pins = <
+                 MX6UL_PAD_CSI_MCLK__UART6_DCE_TX      0x1b0b1
+                 MX6UL_PAD_CSI_PIXCLK__UART6_DCE_RX    0x1b0b1
+             >;
+         };
+
+
+        pinctrl_sai2: sai2grp {
+            fsl,pins = <
+                MX6UL_PAD_JTAG_TDI__SAI2_TX_BCLK    0x17088
+                MX6UL_PAD_JTAG_TDO__SAI2_TX_SYNC    0x17088
+                MX6UL_PAD_JTAG_TRST_B__SAI2_TX_DATA 0x11088
+                MX6UL_PAD_JTAG_TCK__SAI2_RX_DATA    0x11088
+                MX6UL_PAD_JTAG_TMS__SAI2_MCLK       0x17088
+            >;
+        };
+
+        pinctrl_tsc: tscgrp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01    0xb0
+                MX6UL_PAD_GPIO1_IO02__GPIO1_IO02    0xb0
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03    0xb0
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04    0xb0
+            >;
+        };
+
+        pinctrl_usdhc1: usdhc1grp {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x17059
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x10071
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170b9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100b9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170f9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100f9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
+            >;
+        };
+
+        pinctrl_usdhc2: usdhc2grp {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit: usdhc2grp_8bit {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_100mhz: usdhc2grp_8bit_100mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100b9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170b9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170b9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170b9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170b9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170b9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170b9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170b9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170b9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_200mhz: usdhc2grp_8bit_200mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100f9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170f9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+            >;
+        };
+        pinctrl_lcdif_dat: lcdifdatgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+                MX6UL_PAD_LCD_DATA16__LCDIF_DATA16  0x79
+                MX6UL_PAD_LCD_DATA17__LCDIF_DATA17  0x79
+                MX6UL_PAD_LCD_DATA18__LCDIF_DATA18  0x79
+                MX6UL_PAD_LCD_DATA19__LCDIF_DATA19  0x79
+                MX6UL_PAD_LCD_DATA20__LCDIF_DATA20  0x79
+                MX6UL_PAD_LCD_DATA21__LCDIF_DATA21  0x79
+                MX6UL_PAD_LCD_DATA22__LCDIF_DATA22  0x79
+                MX6UL_PAD_LCD_DATA23__LCDIF_DATA23  0x79
+            >;
+        };
+
+        pinctrl_lcdif_dat_16bits: lcdifdatgrp_16bits {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+            >;
+        };
+
+        pinctrl_lcdif_ctrl: lcdifctrlgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_CLK__LCDIF_CLK        0x79
+                MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE  0x79
+                MX6UL_PAD_LCD_HSYNC__LCDIF_HSYNC    0x79
+                MX6UL_PAD_LCD_VSYNC__LCDIF_VSYNC    0x79
+            >;
+        };
+        pinctrl_pwm1: pwm1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0
+            >;
+        };
+        pinctrl_lcdif_reset: lcdifresetgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_RESET__GPIO3_IO04     0x1b0b0
+            >;
+        };
+
+        pinctrl_adc1: adc1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03          0x000010B1
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04          0x000010B1
+                >;
+        };
+
+    };
+};
+
+&iomuxc_snvs {
+    pinctrl-names = "default_snvs";
+    pinctrl-0 = <&pinctrl_hog_2>;
+    imx6ul-evk {
+        pinctrl_hog_2: hoggrp-2 {
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09     0x1b0b0 /* enet1 reset */
+                MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06     0x1b0b0 /* enet2 reset */
+                MX6ULL_PAD_SNVS_TAMPER1__GPIO5_IO01     0x000110A0 /*key 1*/
+            >;
+        };
+
+         pinctrl_tsc_reset: tscresetgrp  {        /*!< Function assigned for the core: Cortex-A7[ca7] */
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER2__GPIO5_IO02        0x000110A0
+            >;
+        };
+
+        pinctrl_spi4: spi4grp {
+            fsl,pins = <
+                MX6ULL_PAD_BOOT_MODE0__GPIO5_IO10        0x70a1
+                MX6ULL_PAD_BOOT_MODE1__GPIO5_IO11        0x70a1
+                MX6ULL_PAD_SNVS_TAMPER7__GPIO5_IO07      0x70a1
+                MX6ULL_PAD_SNVS_TAMPER8__GPIO5_IO08      0x80000000
+            >;
+        };
+
+        pinctrl_leds: ledgrp {
+            fsl,pins = <
+                  MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03        0x000110A0
+            >;
+        };
+
+        pinctrl_485_ctl: uart3_rs485 {
+            fsl,pins = <
+            MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00     0x1b0b0
+            >;
+        };
+        
+    };
+};
+
+&lcdif {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_lcdif_dat
+             &pinctrl_lcdif_ctrl
+             &pinctrl_lcdif_reset>; 
+    display = <&display0>;
+    status = "okay";
+    reset-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; /* 100ask */
+
+    display0: display {
+        bits-per-pixel = <24>;
+        bus-width = <24>;
+
+        display-timings {
+            native-mode = <&timing0>;
+
+             timing0: timing0_1024x768 {
+             clock-frequency = <50000000>;
+             hactive = <1024>;
+             vactive = <600>;
+             hfront-porch = <160>;
+             hback-porch = <140>;
+             hsync-len = <20>;
+             vback-porch = <20>;
+             vfront-porch = <12>;
+             vsync-len = <3>;
+
+             hsync-active = <0>;
+             vsync-active = <0>;
+             de-active = <1>;
+             pixelclk-active = <0>;
+             };
+
+        };
+    };
+};
+
+&pwm1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_pwm1>;
+    status = "okay";
+};
+
+&pxp {
+    status = "okay";
+};
+&ecspi3 { 
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi3>;
+    cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    
+    
+    spidev: icm20608@0{
+        compatible = "invensense,icm20608";
+        interrupt-parent = <&gpio1>;
+        interrupts = <1 1>;
+        spi-max-frequency = <8000000>; 
+        reg = <0>; 
+    };
+};
+
+&sai2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_sai2>;
+
+    assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
+              <&clks IMX6UL_CLK_SAI2>;
+    assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <0>, <12288000>;
+
+    status = "okay";
+};
+
+&tsc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_tsc>;
+    xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
+    measure-delay-time = <0xfffff>;
+    pre-charge-time = <0xffff>;
+    status = "okay";
+};
+
+&uart1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart1>;
+    status = "okay";
+};
+&uart3 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart3
+             &pinctrl_485_ctl>;
+    //pinctrl-0 = <&pinctrl_uart3>;
+    //fsl,rs485-gpio-txen = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    //rts-gpio = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    rs485-rts-active-high;
+    //rs485-rts-active-high;
+        rs485-rx-during-tx;
+        rs485-rts-delay = <100 100>;
+        linux,rs485-enabled-at-boot-time;
+    status = "okay";
+};
+ 
+&uart6 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart6>;
+    status = "okay";
+};
+
+
+&usbotg1 {
+    dr_mode = "otg";
+    srp-disable;
+    hnp-disable;
+    adp-disable;
+    status = "okay";
+};
+
+&usbotg2 {
+    dr_mode = "host";
+    disable-over-current;
+    status = "okay";
+};
+
+&usbphy1 {
+    tx-d-cal = <0x5>;
+};
+
+&usbphy2 {
+    tx-d-cal = <0x5>;
+};
+
+&usdhc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_usdhc1>;
+    cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+    keep-power-in-suspend;
+    enable-sdio-wakeup;
+    bus-width = <4>;
+    status = "okay";
+};
+
+&usdhc2 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_usdhc2_8bit>;
+        bus-width = <8>;
+        non-removable;
+        status = "okay";
+};
+
+&wdog1 {
+    status = "okay";
+};
+
+&adc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_adc1>;
+    num-channels = <5>;
+    vref-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+    
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    /*   
+    spidev0: spi@0 {
+        compatible = "rohm,dh2228fv";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+    };
+    
+    spidev1: spi@1 {
+        compatible = "rohm,dh2228fv";
+        reg = <1>;
+        spi-max-frequency = <5000000>;
+    };
+    */
+    
+};
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/100ask_imx6ull-14x14.dts

@@ -0,0 +1,937 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "imx6ull.dtsi"
+
+/ {
+    model = "Freescale i.MX6 ULL 14x14 EVK Board";
+    compatible = "fsl,imx6ull-14x14-evk", "fsl,imx6ull";
+
+       myled: myled_for_test {
+                pin = "gpio5_3";
+        };
+
+        myled_ok: myled_for_test_ok {
+                compatible = "100ask,led";
+                pin = "gpio5_3";
+        };
+
+
+    chosen {
+        stdout-path = &uart1;
+    };
+
+    memory {
+        reg = <0x80000000 0x20000000>;
+    };
+
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        linux,cma {
+            compatible = "shared-dma-pool";
+            reusable;
+            size = <0x14000000>;
+            linux,cma-default;
+        };
+    };
+
+    backlight {
+        compatible = "pwm-backlight";
+        pwms = <&pwm1 0 1000>;
+        brightness-levels = <0 1 2 3 4 5 6 8 10>;
+        default-brightness-level = <8>;
+        status = "okay";
+    };
+
+    pxp_v4l2 {
+        compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2";
+        status = "okay";
+    };
+
+    regulators {
+        compatible = "simple-bus";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        reg_can_3v3: regulator@0 {
+            compatible = "regulator-fixed";
+            reg = <0>;
+            regulator-name = "can-3v3";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+        };
+
+        reg_usb_ltemodule: regulator@1 {
+            compatible = "regulator-fixed";
+            regulator-name = "ltemodule-pwr";
+            regulator-min-microvolt = <3800000>;
+            regulator-max-microvolt = <3800000>;
+            gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
+            enable-active-high;
+            regulator-boot-on;
+        };
+
+        reg_gpio_wifi: regulator@2 {
+            compatible = "regulator-fixed";
+            regulator-name = "wifi-pwr";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+            gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+            regulator-boot-on;
+        };
+
+    };
+
+    leds {
+        compatible = "gpio-leds";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_leds>;
+        
+        status = "disabled";
+
+        led0: cpu {
+            label = "cpu";
+            gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+            default-state = "on";
+            linux,default-trigger = "heartbeat";
+        };
+    };
+
+    gpio-keys {
+        compatible = "gpio-keys";
+        pinctrl-names = "default";
+
+        user1 {
+            label = "User1 Button";
+            gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_1>;
+        };
+        
+        user2 {
+            label = "User2 Button";
+            gpios = <&gpio4 14 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_2>;
+        };
+    };
+    sound {
+            compatible = "fsl,imx6ul-evk-wm8960",
+                     "fsl,imx-audio-wm8960";
+            model = "wm8960-audio";
+            cpu-dai = <&sai2>;
+            audio-codec = <&codec>;
+            asrc-controller = <&asrc>;
+            codec-master;
+            gpr = <&gpr 4 0x100000 0x100000>;
+            hp-det = <3 0>;
+            /*hp-det-gpios = <&gpio5 4 0>;
+            mic-det-gpios = <&gpio5 4 0>;*/
+            audio-routing =
+                "Headphone Jack", "HP_L",
+                "Headphone Jack", "HP_R",
+                "Ext Spk", "SPK_LP",
+                "Ext Spk", "SPK_LN",
+                "Ext Spk", "SPK_RP",
+                "Ext Spk", "SPK_RN",
+                "LINPUT2", "Mic Jack",
+                "LINPUT3", "Mic Jack",
+                "RINPUT1", "Main MIC",
+                "RINPUT2", "Main MIC",  
+                "Mic Jack", "MICB",
+                "Main MIC", "MICB",
+                "CPU-Playback", "ASRC-Playback",
+                "Playback", "CPU-Playback",
+                "ASRC-Capture", "CPU-Capture",
+                "CPU-Capture", "Capture";
+                status = "okay";
+        };
+    
+    spi4 {
+        compatible = "spi-gpio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_spi4>;
+        pinctrl-assert-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
+        status = "okay";
+        gpio-sck = <&gpio5 11 0>;
+        gpio-mosi = <&gpio5 10 0>;
+        cs-gpios = <&gpio5 7 0>;
+        num-chipselects = <1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        gpio_spi: gpio_spi@0 {
+            compatible = "fairchild,74hc595";
+            gpio-controller;
+            #gpio-cells = <2>;
+            reg = <0>;
+            registers-number = <1>;
+            registers-default = /bits/ 8 <0x57>;
+            spi-max-frequency = <10000>;
+        };
+    };
+    
+    sii902x_reset: sii902x-reset {
+            compatible = "gpio-reset";
+            reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
+            reset-delay-us = <100000>;
+            #reset-cells = <0>;
+            status = "okay";
+        };
+
+};
+
+&gpmi{
+    status = "disabled";
+};
+&cpu0 {
+    arm-supply = <&reg_arm>;
+    soc-supply = <&reg_soc>;
+};
+
+&clks {
+    assigned-clocks = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <786432000>;
+};
+
+&fec1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet1>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy0>;
+    phy-reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+};
+
+&fec2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet2>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy1>;
+    phy-reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ethphy0: ethernet-phy@0 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <0>;
+        };
+        ethphy1: ethernet-phy@1 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <1>;
+        };
+    };
+};
+
+&flexcan1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_flexcan1>;
+    xceiver-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+&gpc {
+    fsl,cpu_pupscr_sw2iso = <0x1>;
+    fsl,cpu_pupscr_sw = <0x0>;
+    fsl,cpu_pdnscr_iso2sw = <0x1>;
+    fsl,cpu_pdnscr_iso = <0x1>;
+    fsl,ldo-bypass = <0>; /* DCDC, ldo-enable */
+};
+
+&i2c1 {
+    clock-frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c1>;
+    status = "okay";
+};
+
+&i2c2 {
+    clock_frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c2>;
+    status = "okay";
+
+    codec: wm8960@1a {
+        compatible = "wlf,wm8960";
+        reg = <0x1a>;
+        clocks = <&clks IMX6UL_CLK_SAI2>;
+        clock-names = "mclk";
+        wlf,shared-lrclk;
+        };
+         sii902x: sii902x@39 {
+                 compatible = "SiI,sii902x";
+                 pinctrl-names = "default";
+                 reset-names="sii902x";
+                 pinctrl-0 = <&pinctrl_sii902x>;
+                 resets = <&sii902x_reset>;
+                 interrupt-parent = <&gpio1>;
+                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+                 mode_str ="1280x720M@60";
+                 bits-per-pixel = <16>;
+                 reg = <0x39>;
+                 status = "okay";    
+         };
+
+
+        gt9xx@5d {
+                compatible = "goodix,gt9xx";
+                reg = <0x5d>;
+                status = "okay";
+                interrupt-parent = <&gpio1>;
+                interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinctrl_tsc_reset &pinctrl_touchscreen_int>;
+                /*pinctrl-1 = <&pinctrl_tsc_irq>;*/
+                /*pinctrl-names = "default", "int-output-low", "int-output-high", "int-input";
+                pinctrl-0 = <&ts_int_default>;
+                pinctrl-1 = <&ts_int_output_low>;
+                pinctrl-2 = <&ts_int_output_high>;
+                pinctrl-3 = <&ts_int_input>;
+                */
+                reset-gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
+                irq-gpios = <&gpio1 5 IRQ_TYPE_EDGE_FALLING>;
+                irq-flags = <2>;                /*1:rising 2: falling*/
+
+                touchscreen-max-id = <5>;
+                touchscreen-size-x = <800>;
+                touchscreen-size-y = <480>;
+                touchscreen-max-w = <1024>;
+                touchscreen-max-p = <1024>;
+                /*touchscreen-key-map = <172>, <158>;*/ /*KEY_HOMEPAGE, KEY_BACK*/
+
+                goodix,type-a-report = <0>;
+                goodix,driver-send-cfg = <0>;
+                goodix,create-wr-node = <1>;
+                goodix,wakeup-with-reset = <0>;
+                goodix,resume-in-workqueue = <0>;
+                goodix,int-sync = <0>;
+                goodix,swap-x2y = <0>;
+                goodix,esd-protect = <0>;
+                goodix,pen-suppress-finger = <0>;
+                goodix,auto-update = <0>;
+                goodix,auto-update-cfg = <0>;
+                goodix,power-off-sleep = <0>;
+
+                /*7*/
+                goodix,cfg-group0 = [
+                6b 00 04 58 02 05 0d 00 01 0f 
+                28 0f 50 32 03 05 00 00 00 00 
+                00 00 00 00 00 00 00 8a 2a 0c 
+                45 47 0c 08 00 00 00 40 03 2c 
+                00 01 00 00 00 03 64 32 00 00 
+                00 28 64 94 d5 02 07 00 00 04 
+                95 2c 00 8b 34 00 82 3f 00 7d 
+                4c 00 7a 5b 00 7a 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 18 16 14 12 10 0e 0c 0a 
+                08 06 04 02 ff ff 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 16 18 1c 1d 1e 1f 20 21 
+                22 24 13 12 10 0f 0a 08 06 04 
+                02 00 ff ff ff ff ff ff 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 79 01
+                ];
+
+                /*4.3*/
+                goodix,cfg-group1 = [
+                97 E0 01 10 01 05 0D 00 01 00
+                00 05 5A 46 53 11 00 00 11 11
+                14 14 14 22 0A 04 00 00 00 00
+                00 00 53 00 14 00 00 84 00 00
+                3C 00 00 64 1E 28 87 27 08 32
+                34 05 0D 20 33 60 11 02 24 00
+                00 64 80 80 14 02 00 00 54 89
+                68 85 6D 82 72 80 76 7D 7B 7B
+                00 00 00 00 00 00 00 F0 50 3C
+                FF FF 07 00 00 00 02 14 14 03
+                04 00 21 64 0A 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                32 20 50 3C 3C 00 00 00 00 00
+                0D 06 0C 05 0B 04 0A 03 FF FF
+                FF FF FF FF 00 01 02 03 04 05
+                06 07 08 09 0A 0B 0C 0D FF FF
+                FF FF FF FF FF FF FF FF FF FF
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 3C 00 05 1E 00 02
+                2A 1E 19 14 02 00 03 0A 05 00
+                00 00 00 00 00 00 01 FF FF 86
+                22 03 00 00 33 00 0F 00 00 00
+                50 3C 50 00 00 00 00 2A 01
+                ];
+
+                /*5*/
+                goodix,cfg-group2 = [
+                00 20 03 E0 01 05 3C 00 01 08
+                28 0C 50 32 03 05 00 00 00 00
+                00 00 00 17 19 1E 14 8B 2B 0D
+                33 35 0C 08 00 00 00 9A 03 11
+                00 01 00 00 00 00 00 32 00 00
+                00 20 58 94 C5 02 00 00 00 04
+                B0 23 00 93 2B 00 7B 35 00 69
+                41 00 5B 4F 00 5B 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 02 04 06 08 0A 0C 0E 10
+                12 14 16 18 1A FF 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 02 04 06 08 0A 0C 0F
+                10 12 13 16 18 1C 1D 1E 1F 20
+                21 22 24 26 FF FF FF FF 00 00
+                00 FF FF FF FF FF FF FF FF FF
+                FF FF FF FF 48 01
+                ];
+
+        };
+
+
+};
+
+&iomuxc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_hog_1>;
+    imx6ul-evk {
+        pinctrl_hog_1: hoggrp-1 {
+            fsl,pins = <
+                MX6UL_PAD_UART1_RTS_B__GPIO1_IO19   0x17059 /* SD1 CD */
+                MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID    0x17059 /* USB OTG1 ID */
+                // MX6UL_PAD_CSI_DATA07__GPIO4_IO28           0x000010B0
+                MX6ULL_PAD_SNVS_TAMPER5__GPIO5_IO05        0x000110A0
+            >;
+        };
+                pinctrl_sii902x: hdmigrp {
+                fsl,pins = <
+                        MX6UL_PAD_UART1_CTS_B__GPIO1_IO18 0x59
+                            >;
+            };
+                pinctrl_touchscreen_int: lcdif_tsc_int {
+                fsl,pins = <
+                        MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x000010B0
+                            >;
+                        };
+        pinctrl_enet1: enet1grp {
+            fsl,pins = <
+            >;
+        };
+
+        pinctrl_enet2: enet2grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO06__ENET2_MDIO    0x1b0b0
+                MX6UL_PAD_GPIO1_IO07__ENET2_MDC     0x1b0b0
+                MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2  0x4001b031
+                MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b031
+            >;
+        };
+
+        pinctrl_flexcan1: flexcan1grp{
+            fsl,pins = <
+                MX6UL_PAD_UART3_CTS_B__FLEXCAN1_TX         0x000010B0
+                MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX         0x000010B0
+            >;
+        };
+
+        pinctrl_i2c1: i2c1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART4_TX_DATA__I2C1_SCL 0x4001b8b0
+                MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_i2c2: i2c2grp {
+            fsl,pins = <
+                MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0
+                MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_ecspi3: ecspi3 {              
+                    fsl,pins = <
+                MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI         0x000010B0
+                MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO         0x000010B0
+                MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK       0x000010B0
+                //MX6UL_PAD_UART2_TX_DATA__ECSPI3_SS0        0x000010B0
+                MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20        0x000010B0
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01           0x000010B0
+            >;
+        };
+
+        pinctrl_ecspi1: ecspi1 {
+                     fsl,pins = <
+                 MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK         0x000010B0
+                 MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI         0x000010B0
+                 MX6UL_PAD_CSI_DATA07__ECSPI1_MISO         0x000010B0
+                 MX6UL_PAD_CSI_DATA05__GPIO4_IO26          0x000010B0
+                 MX6UL_PAD_CSI_DATA03__GPIO4_IO24          0x000010B0
+             >;
+         };
+
+        pinctrl_uart3: uart3grp {
+            fsl,pins = <
+                MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX   0x1b0b1
+                MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX   0x1b0b1
+            >;
+        };
+        
+        pinctrl_uart1: uart1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+                MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+            >;
+        };
+
+        pinctrl_uart6: uart6grp {
+             fsl,pins = <
+                 MX6UL_PAD_CSI_MCLK__UART6_DCE_TX      0x1b0b1
+                 MX6UL_PAD_CSI_PIXCLK__UART6_DCE_RX    0x1b0b1
+             >;
+         };
+
+
+        pinctrl_sai2: sai2grp {
+            fsl,pins = <
+                MX6UL_PAD_JTAG_TDI__SAI2_TX_BCLK    0x17088
+                MX6UL_PAD_JTAG_TDO__SAI2_TX_SYNC    0x17088
+                MX6UL_PAD_JTAG_TRST_B__SAI2_TX_DATA 0x11088
+                MX6UL_PAD_JTAG_TCK__SAI2_RX_DATA    0x11088
+                MX6UL_PAD_JTAG_TMS__SAI2_MCLK       0x17088
+            >;
+        };
+
+        pinctrl_tsc: tscgrp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01    0xb0
+                MX6UL_PAD_GPIO1_IO02__GPIO1_IO02    0xb0
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03    0xb0
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04    0xb0
+            >;
+        };
+
+        pinctrl_usdhc1: usdhc1grp {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x17059
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x10071
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170b9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100b9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170f9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100f9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
+            >;
+        };
+
+        pinctrl_usdhc2: usdhc2grp {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit: usdhc2grp_8bit {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_100mhz: usdhc2grp_8bit_100mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100b9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170b9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170b9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170b9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170b9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170b9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170b9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170b9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170b9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_200mhz: usdhc2grp_8bit_200mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100f9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170f9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+            >;
+        };
+        pinctrl_lcdif_dat: lcdifdatgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+                MX6UL_PAD_LCD_DATA16__LCDIF_DATA16  0x79
+                MX6UL_PAD_LCD_DATA17__LCDIF_DATA17  0x79
+                MX6UL_PAD_LCD_DATA18__LCDIF_DATA18  0x79
+                MX6UL_PAD_LCD_DATA19__LCDIF_DATA19  0x79
+                MX6UL_PAD_LCD_DATA20__LCDIF_DATA20  0x79
+                MX6UL_PAD_LCD_DATA21__LCDIF_DATA21  0x79
+                MX6UL_PAD_LCD_DATA22__LCDIF_DATA22  0x79
+                MX6UL_PAD_LCD_DATA23__LCDIF_DATA23  0x79
+            >;
+        };
+
+        pinctrl_lcdif_dat_16bits: lcdifdatgrp_16bits {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+            >;
+        };
+
+        pinctrl_lcdif_ctrl: lcdifctrlgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_CLK__LCDIF_CLK        0x79
+                MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE  0x79
+                MX6UL_PAD_LCD_HSYNC__LCDIF_HSYNC    0x79
+                MX6UL_PAD_LCD_VSYNC__LCDIF_VSYNC    0x79
+            >;
+        };
+        pinctrl_pwm1: pwm1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0
+            >;
+        };
+        pinctrl_lcdif_reset: lcdifresetgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_RESET__GPIO3_IO04     0x1b0b0
+            >;
+        };
+
+        pinctrl_adc1: adc1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03          0x000010B1
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04          0x000010B1
+                >;
+        };
+
+    };
+};
+
+&iomuxc_snvs {
+    pinctrl-names = "default_snvs";
+    pinctrl-0 = <&pinctrl_hog_2>;
+    imx6ul-evk {
+        pinctrl_hog_2: hoggrp-2 {
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09     0x1b0b0 /* enet1 reset */
+                MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06     0x1b0b0 /* enet2 reset */
+                MX6ULL_PAD_SNVS_TAMPER1__GPIO5_IO01     0x000110A0 /*key 1*/
+            >;
+        };
+
+         pinctrl_tsc_reset: tscresetgrp  {        /*!< Function assigned for the core: Cortex-A7[ca7] */
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER2__GPIO5_IO02        0x000110A0
+            >;
+        };
+
+        pinctrl_spi4: spi4grp {
+            fsl,pins = <
+                MX6ULL_PAD_BOOT_MODE0__GPIO5_IO10        0x70a1
+                MX6ULL_PAD_BOOT_MODE1__GPIO5_IO11        0x70a1
+                MX6ULL_PAD_SNVS_TAMPER7__GPIO5_IO07      0x70a1
+                MX6ULL_PAD_SNVS_TAMPER8__GPIO5_IO08      0x80000000
+            >;
+        };
+
+        pinctrl_leds: ledgrp {
+            fsl,pins = <
+                  MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03        0x000110A0
+            >;
+        };
+
+        pinctrl_485_ctl: uart3_rs485 {
+            fsl,pins = <
+            MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00     0x1b0b0
+            >;
+        };
+        
+    };
+};
+
+&lcdif {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_lcdif_dat
+             &pinctrl_lcdif_ctrl
+             &pinctrl_lcdif_reset>; 
+    display = <&display0>;
+    status = "okay";
+    reset-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; /* 100ask */
+
+    display0: display {
+        bits-per-pixel = <24>;
+        bus-width = <24>;
+
+        display-timings {
+            native-mode = <&timing0>;
+
+             timing0: timing0_1024x768 {
+             clock-frequency = <50000000>;
+             hactive = <1024>;
+             vactive = <600>;
+             hfront-porch = <160>;
+             hback-porch = <140>;
+             hsync-len = <20>;
+             vback-porch = <20>;
+             vfront-porch = <12>;
+             vsync-len = <3>;
+
+             hsync-active = <0>;
+             vsync-active = <0>;
+             de-active = <1>;
+             pixelclk-active = <0>;
+             };
+
+        };
+    };
+};
+
+&pwm1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_pwm1>;
+    status = "okay";
+};
+
+&pxp {
+    status = "okay";
+};
+&ecspi3 { 
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi3>;
+    cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    
+    
+    spidev: icm20608@0{
+        compatible = "invensense,icm20608";
+        interrupt-parent = <&gpio1>;
+        interrupts = <1 1>;
+        spi-max-frequency = <8000000>; 
+        reg = <0>; 
+    };
+};
+
+&sai2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_sai2>;
+
+    assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
+              <&clks IMX6UL_CLK_SAI2>;
+    assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <0>, <12288000>;
+
+    status = "okay";
+};
+
+&tsc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_tsc>;
+    xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
+    measure-delay-time = <0xfffff>;
+    pre-charge-time = <0xffff>;
+    status = "okay";
+};
+
+&uart1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart1>;
+    status = "okay";
+};
+&uart3 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart3
+             &pinctrl_485_ctl>;
+    //pinctrl-0 = <&pinctrl_uart3>;
+    //fsl,rs485-gpio-txen = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    //rts-gpio = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    rs485-rts-active-high;
+    //rs485-rts-active-high;
+        rs485-rx-during-tx;
+        rs485-rts-delay = <100 100>;
+        linux,rs485-enabled-at-boot-time;
+    status = "okay";
+};
+ 
+&uart6 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart6>;
+    status = "okay";
+};
+
+
+&usbotg1 {
+    dr_mode = "otg";
+    srp-disable;
+    hnp-disable;
+    adp-disable;
+    status = "okay";
+};
+
+&usbotg2 {
+    dr_mode = "host";
+    disable-over-current;
+    status = "okay";
+};
+
+&usbphy1 {
+    tx-d-cal = <0x5>;
+};
+
+&usbphy2 {
+    tx-d-cal = <0x5>;
+};
+
+&usdhc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_usdhc1>;
+    cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+    keep-power-in-suspend;
+    enable-sdio-wakeup;
+    bus-width = <4>;
+    status = "okay";
+};
+
+&usdhc2 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_usdhc2_8bit>;
+        bus-width = <8>;
+        non-removable;
+        status = "okay";
+};
+
+&wdog1 {
+    status = "okay";
+};
+
+&adc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_adc1>;
+    num-channels = <5>;
+    vref-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+    
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    /*   
+    spidev0: spi@0 {
+        compatible = "rohm,dh2228fv";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+    };
+    
+    spidev1: spi@1 {
+        compatible = "rohm,dh2228fv";
+        reg = <1>;
+        spi-max-frequency = <5000000>;
+    };
+    */
+    
+};
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/Makefile

@@ -0,0 +1,12 @@
+
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order
+
+obj-m	+= led_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/led_drv.c

@@ -0,0 +1,198 @@
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+
+#include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
+
+
+#define LED_MAX_CNT 10
+
+struct led_desc {
+	int pin;
+	int minor;
+};
+
+/* 1. 确定主设备号 */ 
+static int major = 0;
+static struct class *led_class;
+
+static int g_ledcnt = 0;
+static struct led_desc leds_desc[LED_MAX_CNT];
+
+
+
+/* 3. 实现对应的open/read/write等函数，填入file_operations结构体                   */
+static ssize_t led_drv_write (struct file *file, const char __user *buf, size_t size, loff_t *offset)
+{
+	int err;
+	char status;
+	struct inode *inode = file_inode(file);
+	int minor = iminor(inode);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	err = copy_from_user(&status, buf, 1);
+
+	/* 根据次设备号和status控制LED */
+	printk("set led pin 0x%x as %d\n", leds_desc[minor].pin, status);
+	
+	return 1;
+}
+
+static int led_drv_open (struct inode *node, struct file *file)
+{
+	int minor = iminor(node);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* 根据次设备号初始化LED */
+	printk("init led pin 0x%x as output\n", leds_desc[minor].pin);
+	
+	return 0;
+}
+
+
+/* 2. 定义自己的file_operations结构体                                              */
+static struct file_operations led_drv = {
+	.owner	 = THIS_MODULE,
+	.open    = led_drv_open,
+	.write   = led_drv_write,
+};
+
+/* B.1 实现platform_driver的probe函数  */
+static int led_probe(struct platform_device *pdev)
+{	
+	int minor;
+	int i = 0;
+	const char *tmp_str;
+
+	struct resource *res;
+		
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	if (!pdev->dev.of_node)  /* 普通的platform_device */
+	{
+		res = platform_get_resource(pdev, IORESOURCE_IRQ, i++);
+		if (!res)
+			return -EINVAL;
+		minor = g_ledcnt;
+		leds_desc[minor].pin = res->start;
+	}
+	else
+	{
+		of_property_read_string(pdev->dev.of_node, "pin", &tmp_str);
+		printk("pin = %s\n", tmp_str);
+		minor = g_ledcnt;
+		leds_desc[minor].pin = tmp_str[6] - '0';
+	}
+
+	/* 记录引脚 */
+	leds_desc[minor].minor = minor;
+
+	/* 7.2 辅助信息 */
+	/* 创建设备节点 */
+	device_create(led_class, NULL, MKDEV(major, minor), NULL, "100ask_led%d", minor); /* /dev/100ask_led0,1,... */
+	
+	platform_set_drvdata(pdev, &leds_desc[minor]);
+	
+	g_ledcnt++;
+	
+    return 0;
+}
+
+/* B.2 实现platform_driver的remove函数  */
+static int led_remove(struct platform_device *pdev)
+{
+	struct led_desc *led = platform_get_drvdata(pdev);
+
+	device_destroy(led_class, MKDEV(major, led->minor)); /* /dev/100ask_led0,1,... */
+
+    return 0;
+}
+
+static const struct platform_device_id led_id_table[] = {
+	{"100ask_led",   1},
+	{"100ask_led_3", 2},
+	{"100ask_led_4", 3},
+	{ },
+};
+
+static const struct of_device_id dts_device_ids[] = {
+    { .compatible = "100ask,led", },
+    {/* sentinel */}
+};
+
+
+/* A. 实现platform_driver  */
+static struct platform_driver led_driver = {
+    .probe      = led_probe,
+    .remove     = led_remove,
+    .driver     = {
+        .name   = "100ask_led",
+		.of_match_table = dts_device_ids,
+    },
+    .id_table = led_id_table,
+};
+
+
+
+/* 4. 把file_operations结构体告诉内核：注册驱动程序register_chrdev                                */
+/* 5. 谁来注册驱动程序啊？得有一个入口函数：安装驱动程序时，就会去调用这个入口函数 */
+static int __init led_init(void)
+{
+	int err;
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	major = register_chrdev(0, "100ask_led", &led_drv);  /* /dev/led */
+
+
+	/* 7.1 辅助信息 */
+	led_class = class_create(THIS_MODULE, "100ask_led_class");
+	err = PTR_ERR(led_class);
+	if (IS_ERR(led_class)) {
+		printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+		unregister_chrdev(major, "led");
+		return -1;
+	}
+
+	/* C. 注册platform_driver	*/
+    err = platform_driver_register(&led_driver); 
+    
+    return err;
+}
+
+/* 6. 有入口函数就应该有出口函数：卸载驱动程序时，就会去调用这个出口函数           */
+static void __exit led_exit(void)
+{
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* C. 反注册platform_driver	*/
+    platform_driver_unregister(&led_driver); 
+
+	class_destroy(led_class);
+	unregister_chrdev(major, "100ask_led");
+}
+
+
+/* 7. 其他完善：提供设备信息，自动创建设备节点                                     */
+
+module_init(led_init);
+module_exit(led_exit);
+
+MODULE_LICENSE("GPL");
+
+

IMX6ULL/source/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/ledtest.c

@@ -0,0 +1,50 @@
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * ./ledtest /dev/100ask_led0 on
+ * ./ledtest /dev/100ask_led0 off
+ */
+int main(int argc, char **argv)
+{
+	int fd;
+	char status;
+	
+	/* 1. 判断参数 */
+	if (argc != 3) 
+	{
+		printf("Usage: %s <dev> <on | off>\n", argv[0]);
+		return -1;
+	}
+
+	/* 2. 打开文件 */
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1)
+	{
+		printf("can not open file %s\n", argv[1]);
+		return -1;
+	}
+
+	/* 3. 写文件 */
+	if (0 == strcmp(argv[2], "on"))
+	{
+		status = 1;
+		write(fd, &status, 1);
+	}
+	else
+	{
+		status = 0;
+		write(fd, &status, 1);
+	}
+	
+	close(fd);
+	
+	return 0;
+}
+
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/doc_pic/28_SPI设备驱动开发1_OLED屏幕硬件操作.md

@@ -0,0 +1,69 @@
+# SPI设备驱动开发1_OLED屏幕硬件操作
+
+
+
+## 1.  SPI总线设备驱动模型
+
+
+
+![image-20220118192410328](pic/spi/01_spi_bus_dev_drv.png)
+
+
+
+## 2. 分析
+
+![image-20220118204447939](pic/spi/02_device_tree_err.png)
+
+
+
+## 3. 调试DAC驱动
+
+### 3.1 思路
+
+使用逻辑分析仪：发现CS信号没有变化
+
+查看内核调试信息：cat /sys/kernel/debug/gpio, 发现引脚为input：
+
+![image-20220122195532597](pic/spi/03_cs_gpio_input.png)
+
+
+
+在内核SPI控制器驱动中添加打印，发现GPIO 122确实被配置为output：
+
+```c
+static int spi_imx_setup(struct spi_device *spi)
+{
+	int err;
+	
+	dev_dbg(&spi->dev, "%s: mode %d, %u bpw, %d hz\n", __func__,
+		 spi->mode, spi->bits_per_word, spi->max_speed_hz);
+
+	if (gpio_is_valid(spi->cs_gpio))
+	{
+		err =  gpio_direction_output(spi->cs_gpio,
+				      spi->mode & SPI_CS_HIGH ? 0 : 1);
+
+	  printk("%s %s %d, spi->cs_gpio = %d, gpio_direction_output, err = %d\n", __FILE__, __FUNCTION__, __LINE__, spi->cs_gpio, err);
+	}
+
+	spi_imx_chipselect(spi, BITBANG_CS_INACTIVE);
+
+	return 0;
+}
+```
+
+
+
+怀疑：
+
+* 这个驱动的后续代码再次把GPIO配置成立input
+* 其他驱动把GPIO也配置成了input：把spi-imx.ko最后手动加载，发现问题依旧，排除其他驱动的影响。
+
+
+
+解决办法：
+
+![image-20220122202505579](pic/spi/04_fix_code.png)
+
+
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/01_oled_template/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+#	$(CROSS_COMPILE)gcc -o at24c02_test at24c02_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order  
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/01_oled_template/oled_drv.c

@@ -0,0 +1,58 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+
+static int oled_probe(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/02_oled_write/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+#	$(CROSS_COMPILE)gcc -o at24c02_test at24c02_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order  
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/02_oled_write/oled_drv.c

@@ -0,0 +1,109 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+
+struct spi_device *oled_dev;
+
+static int major;
+static struct class *oled_class;
+
+static long oled_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct spi_message msg;
+	struct spi_transfer trans[3];
+
+	trans[0].tx_buf = buf0;
+	trans[0].len    = len0;
+
+	trans[1].rx_buf = buf1;
+	trans[1].len    = len1;
+
+	trans[2].tx_buf = buf2;
+	trans[2].rx_buf = buf3;
+	trans[2].len    = len2;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&trans[0], &msg);
+	spi_message_add_tail(&trans[1], &msg);
+	spi_message_add_tail(&trans[2], &msg);
+	
+	return 0;
+}
+
+/* 定义自己的file_operations结构体                                              */
+static struct file_operations oled_fops = {
+	.owner	 = THIS_MODULE,
+	.unlocked_ioctl = oled_ioctl,
+};
+
+static int oled_probe(struct spi_device *spi)
+{	
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	oled_dev = spi;
+
+	/* register_chrdev */
+	major = register_chrdev(0, "oled", &oled_fops);  
+
+	/* class_create */
+	oled_class = class_create(THIS_MODULE, "oled_class");
+
+	/* device_create */
+	device_create(oled_class, NULL, MKDEV(major, 0), NULL, "myoled");
+	
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	device_destroy(oled_class, MKDEV(major, 0));
+	class_destroy(oled_class);
+	unregister_chrdev(major, "oled");
+
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/03_oled_write_coding/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+#	$(CROSS_COMPILE)gcc -o at24c02_test at24c02_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order  
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/03_oled_write_coding/oled.dts

@@ -0,0 +1,16 @@
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
+
+    oled: oled {
+        compatible = "100ask,oled";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+        dc-gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
+    };
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/03_oled_write_coding/oled_drv.c

@@ -0,0 +1,231 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+struct spi_device *oled_dev;
+static struct gpio_desc *oled_dc;
+static int major;
+static struct class *oled_class;
+
+/**********************************************************************
+	 * 函数名称： oled_write_cmd
+	 * 功能描述： oled向特定地址写入数据或者命令
+	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:为1则表示写入数据，为0表示写入命令
+	 * 输出参数：无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/04		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd)
+{
+	if(uc_cmd==0)
+	{
+		//*GPIO4_DR_s &= ~(1<<20);//拉低，表示写入指令
+		gpiod_set_value(oled_dc, 0);
+	}
+	else
+	{
+		//*GPIO4_DR_s |= (1<<20);//拉高，表示写入数据
+		gpiod_set_value(oled_dc, 1);
+	}
+	// spi_writeread(ESCPI1_BASE,uc_data);//写入
+	spi_write(oled_dev, &uc_data, 1);
+}
+
+
+/**********************************************************************
+	 * 函数名称： oled_init
+	 * 功能描述： oled_init的初始化，包括SPI控制器得初始化
+	 * 输入参数：无
+	 * 输出参数： 初始化的结果
+	 * 返 回 值： 成功则返回0，否则返回-1
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static int oled_hardware_init(void)
+{
+	unsigned char uc_dev_id = 0;
+		  			 		  						  					  				 	   		  	  	 	  
+	oled_write_cmd_data(0xae,OLED_CMD);//关闭显示
+
+	oled_write_cmd_data(0x00,OLED_CMD);//设置 lower column address
+	oled_write_cmd_data(0x10,OLED_CMD);//设置 higher column address
+
+	oled_write_cmd_data(0x40,OLED_CMD);//设置 display start line
+
+	oled_write_cmd_data(0xB0,OLED_CMD);//设置page address
+
+	oled_write_cmd_data(0x81,OLED_CMD);// contract control
+	oled_write_cmd_data(0x66,OLED_CMD);//128
+
+	oled_write_cmd_data(0xa1,OLED_CMD);//设置 segment remap
+
+	oled_write_cmd_data(0xa6,OLED_CMD);//normal /reverse
+
+	oled_write_cmd_data(0xa8,OLED_CMD);//multiple ratio
+	oled_write_cmd_data(0x3f,OLED_CMD);//duty = 1/64
+
+	oled_write_cmd_data(0xc8,OLED_CMD);//com scan direction
+
+	oled_write_cmd_data(0xd3,OLED_CMD);//set displat offset
+	oled_write_cmd_data(0x00,OLED_CMD);//
+
+	oled_write_cmd_data(0xd5,OLED_CMD);//set osc division
+	oled_write_cmd_data(0x80,OLED_CMD);//
+
+	oled_write_cmd_data(0xd9,OLED_CMD);//ser pre-charge period
+	oled_write_cmd_data(0x1f,OLED_CMD);//
+
+	oled_write_cmd_data(0xda,OLED_CMD);//set com pins
+	oled_write_cmd_data(0x12,OLED_CMD);//
+
+	oled_write_cmd_data(0xdb,OLED_CMD);//set vcomh
+	oled_write_cmd_data(0x30,OLED_CMD);//
+
+	oled_write_cmd_data(0x8d,OLED_CMD);//set charge pump disable 
+	oled_write_cmd_data(0x14,OLED_CMD);//
+
+	oled_write_cmd_data(0xaf,OLED_CMD);//set dispkay on
+
+	return 0;
+}		  	
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Set_Pos(int x, int y)
+{ 	oled_write_cmd_data(0xb0+y,OLED_CMD);
+	oled_write_cmd_data((x&0x0f),OLED_CMD); 
+	oled_write_cmd_data(((x&0xf0)>>4)|0x10,OLED_CMD);
+}   	      	   			 
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Clear
+	 * 功能描述： 整个屏幕显示数据清0
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void OLED_DIsp_Clear(void)  
+{
+    unsigned char x, y;
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        for (x = 0; x < 128; x++)
+            oled_write_cmd_data((y < 4)? 0 : 0xff, OLED_DATA); /* 清零 */
+    }
+}
+
+
+static long oled_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	
+	return 0;
+}
+
+/* 定义自己的file_operations结构体                                              */
+static struct file_operations oled_fops = {
+	.owner	 = THIS_MODULE,
+	.unlocked_ioctl = oled_ioctl,
+};
+
+static int oled_probe(struct spi_device *spi)
+{	
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	oled_dev = spi;
+
+	/* register_chrdev */
+	major = register_chrdev(0, "oled", &oled_fops);  
+
+	/* class_create */
+	oled_class = class_create(THIS_MODULE, "oled_class");
+
+	/* device_create */
+	device_create(oled_class, NULL, MKDEV(major, 0), NULL, "myoled");
+
+	/* spi oled init */
+	oled_dc = gpiod_get(&spi->dev, "dc", GPIOD_OUT_HIGH);
+	
+	oled_hardware_init();
+
+	OLED_DIsp_Clear();
+	
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	device_destroy(oled_class, MKDEV(major, 0));
+	class_destroy(oled_class);
+	unregister_chrdev(major, "oled");
+
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/04_oled_write_ioctl/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+	$(CROSS_COMPILE)gcc -o oled_test oled_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order   oled_test
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/04_oled_write_ioctl/font.h

@@ -0,0 +1,106 @@
+#ifndef  _FONT_H_
+#define _FONT_H_
+const unsigned char oled_asc2_8x16[95][16]=
+{
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},// 0
+    {0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00},//!1
+    {0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//"2
+    {0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00},//#3
+    {0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00},//$4
+    {0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00},//%5
+    {0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10},//&6
+    {0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//'7
+    {0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00},//(8
+    {0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00},//)9
+    {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},//*10
+    {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},//+11
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00},//,12
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01},//-13
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00},//.14
+    {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},///15
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//016
+    {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//117
+    {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},//218
+    {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},//319
+    {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},//420
+    {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},//521
+    {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},//622
+    {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},//723
+    {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},//824
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},//925
+    {0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00},//:26
+    {0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00},//;27
+    {0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00},//<28
+    {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},//=29
+    {0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00},//>30
+    {0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00},//?31
+    {0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00},//@32
+    {0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20},//A33
+    {0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00},//B34
+    {0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},//C35
+    {0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00},//D36
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00},//E37
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00},//F38
+    {0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00},//G39
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20},//H40
+    {0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//I41
+    {0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00},//J42
+    {0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00},//K43
+    {0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00},//L44
+    {0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00},//M45
+    {0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00},//N46
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00},//O47
+    {0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00},//P48
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00},//Q49
+    {0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20},//R50
+    {0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00},//S51
+    {0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//T52
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//U53
+    {0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00},//V54
+    {0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00},//W55
+    {0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20},//X56
+    {0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//Y57
+    {0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00},//Z58
+    {0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00},//[59
+    {0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00},//\60
+    {0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00},//]61
+    {0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//^62
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},//_63
+    {0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//`64
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20},//a65
+    {0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00},//b66
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00},//c67
+    {0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20},//d68
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00},//e69
+    {0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//f70
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00},//g71
+    {0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//h72
+    {0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//i73
+    {0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00},//j74
+    {0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00},//k75
+    {0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//l76
+    {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F},//m77
+    {0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//n78
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//o79
+    {0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00},//p80
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80},//q81
+    {0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00},//r82
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00},//s83
+    {0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00},//t84
+    {0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20},//u85
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00},//v86
+    {0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00},//w87
+    {0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00},//x88
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00},//y89
+    {0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00},//z90
+    {0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40},//{91
+    {0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00},//|92
+    {0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00},//}93
+    {0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//~94
+};      
+const unsigned char hz_1616[][32]={
+{0x02,0x00,0x02,0x00,0xE2,0xFF,0x22,0x42,0x22,0x42,0x32,0x42,0x2A,0x42,0x26,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0xE2,0xFF,0x02,0x00,0x02,0x00,0x00,0x00},/*"百",0*/
+{0x00,0x00,0xF8,0xFF,0x01,0x00,0x02,0x00,0x00,0x00,0xE2,0x1F,0x22,0x08,0x22,0x08,0x22,0x08,0xE2,0x1F,0x02,0x00,0x02,0x40,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"问",1*/
+{0x00,0x00,0xFE,0xFF,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x0E,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x4E,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"网",2*/
+};
+#endif

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/04_oled_write_ioctl/oled.dts

@@ -0,0 +1,16 @@
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
+
+    oled: oled {
+        compatible = "100ask,oled";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+        dc-gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
+    };
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/04_oled_write_ioctl/oled_drv.c

@@ -0,0 +1,290 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/uaccess.h>
+
+#define OLED_SET_XY	  		99
+#define OLED_SET_XY_WRITE_DATA  100
+#define OLED_SET_XY_WRITE_DATAS 101
+#define OLED_SET_DATAS	  		102  /* 102为低8位, 高16位用来表示长度 */
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+struct spi_device *oled_dev;
+static struct gpio_desc *oled_dc;
+static int major;
+static struct class *oled_class;
+static char data_buf[1024];
+
+/**********************************************************************
+	 * 函数名称： oled_write_cmd
+	 * 功能描述： oled向特定地址写入数据或者命令
+	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:为1则表示写入数据，为0表示写入命令
+	 * 输出参数：无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/04		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd)
+{
+	if(uc_cmd==0)
+	{
+		//*GPIO4_DR_s &= ~(1<<20);//拉低，表示写入指令
+		gpiod_set_value(oled_dc, 0);
+	}
+	else
+	{
+		//*GPIO4_DR_s |= (1<<20);//拉高，表示写入数据
+		gpiod_set_value(oled_dc, 1);
+	}
+	// spi_writeread(ESCPI1_BASE,uc_data);//写入
+	spi_write(oled_dev, &uc_data, 1);
+}
+
+static void oled_write_datas(unsigned char *buf, int len)
+{
+	//*GPIO4_DR_s |= (1<<20);//拉高，表示写入数据
+	gpiod_set_value(oled_dc, 1);
+	// spi_writeread(ESCPI1_BASE,uc_data);//写入
+	spi_write(oled_dev, buf, len);
+}
+
+
+
+/**********************************************************************
+	 * 函数名称： oled_init
+	 * 功能描述： oled_init的初始化，包括SPI控制器得初始化
+	 * 输入参数：无
+	 * 输出参数： 初始化的结果
+	 * 返 回 值： 成功则返回0，否则返回-1
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static int oled_hardware_init(void)
+{		  			 		  						  					  				 	   		  	  	 	  
+	oled_write_cmd_data(0xae,OLED_CMD);//关闭显示
+
+	oled_write_cmd_data(0x00,OLED_CMD);//设置 lower column address
+	oled_write_cmd_data(0x10,OLED_CMD);//设置 higher column address
+
+	oled_write_cmd_data(0x40,OLED_CMD);//设置 display start line
+
+	oled_write_cmd_data(0xB0,OLED_CMD);//设置page address
+
+	oled_write_cmd_data(0x81,OLED_CMD);// contract control
+	oled_write_cmd_data(0x66,OLED_CMD);//128
+
+	oled_write_cmd_data(0xa1,OLED_CMD);//设置 segment remap
+
+	oled_write_cmd_data(0xa6,OLED_CMD);//normal /reverse
+
+	oled_write_cmd_data(0xa8,OLED_CMD);//multiple ratio
+	oled_write_cmd_data(0x3f,OLED_CMD);//duty = 1/64
+
+	oled_write_cmd_data(0xc8,OLED_CMD);//com scan direction
+
+	oled_write_cmd_data(0xd3,OLED_CMD);//set displat offset
+	oled_write_cmd_data(0x00,OLED_CMD);//
+
+	oled_write_cmd_data(0xd5,OLED_CMD);//set osc division
+	oled_write_cmd_data(0x80,OLED_CMD);//
+
+	oled_write_cmd_data(0xd9,OLED_CMD);//ser pre-charge period
+	oled_write_cmd_data(0x1f,OLED_CMD);//
+
+	oled_write_cmd_data(0xda,OLED_CMD);//set com pins
+	oled_write_cmd_data(0x12,OLED_CMD);//
+
+	oled_write_cmd_data(0xdb,OLED_CMD);//set vcomh
+	oled_write_cmd_data(0x30,OLED_CMD);//
+
+	oled_write_cmd_data(0x8d,OLED_CMD);//set charge pump disable 
+	oled_write_cmd_data(0x14,OLED_CMD);//
+
+	oled_write_cmd_data(0xaf,OLED_CMD);//set dispkay on
+
+	return 0;
+}		  	
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Set_Pos(int x, int y)
+{ 	oled_write_cmd_data(0xb0+y,OLED_CMD);
+	oled_write_cmd_data((x&0x0f),OLED_CMD); 
+	oled_write_cmd_data(((x&0xf0)>>4)|0x10,OLED_CMD);
+}   	      	   			 
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Clear
+	 * 功能描述： 整个屏幕显示数据清0
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void OLED_DIsp_Clear(void)  
+{
+    unsigned char x, y;
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        for (x = 0; x < 128; x++)
+            oled_write_cmd_data(0, OLED_DATA); /* 清零 */
+    }
+}
+
+
+/* cmd = OLED_SET_XY_WRITE_DATA, buf[0] = x, buf[1] = y, buf[2] = data
+ * cmd = OLED_SET_XY_WRITE_DATAS, buf[0] = x, buf[1] = y, buf[2] = len, buf[3...] = datas
+ */
+static long oled_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	const void __user *from = (const void __user *)arg;
+	char param_buf[3];
+	int size;
+	int err;
+	
+	
+	switch (cmd & 0xff)
+	{
+		case OLED_SET_XY:
+		{
+			err = copy_from_user(param_buf, from, 2);
+			OLED_DIsp_Set_Pos(param_buf[0], param_buf[1]);
+			break;
+		}
+		case OLED_SET_XY_WRITE_DATA:
+		{
+			err = copy_from_user(param_buf, from, 3);
+			OLED_DIsp_Set_Pos(param_buf[0], param_buf[1]);
+			oled_write_cmd_data(param_buf[2], OLED_DATA);
+			break;
+		}
+
+		case OLED_SET_XY_WRITE_DATAS:
+		{
+			err = copy_from_user(param_buf, from, 3);
+			size = param_buf[2];
+			err = copy_from_user(data_buf, from+3, size);
+
+			OLED_DIsp_Set_Pos(param_buf[0], param_buf[1]);
+			oled_write_datas(data_buf, size);
+			
+			break;
+		}
+
+		case OLED_SET_DATAS:
+		{
+			size = cmd >> 8;
+			err = copy_from_user(data_buf, from, size);
+			oled_write_datas(data_buf, size);
+			break;
+		}
+	}
+	return 0;
+}
+
+/* 定义自己的file_operations结构体                                              */
+static struct file_operations oled_fops = {
+	.owner	 = THIS_MODULE,
+	.unlocked_ioctl = oled_ioctl,
+};
+
+static int oled_probe(struct spi_device *spi)
+{	
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	oled_dev = spi;
+
+	/* register_chrdev */
+	major = register_chrdev(0, "oled", &oled_fops);  
+
+	/* class_create */
+	oled_class = class_create(THIS_MODULE, "oled_class");
+
+	/* device_create */
+	device_create(oled_class, NULL, MKDEV(major, 0), NULL, "myoled");
+
+	/* spi oled init */
+	oled_dc = gpiod_get(&spi->dev, "dc", GPIOD_OUT_HIGH);
+	
+	oled_hardware_init();
+
+	OLED_DIsp_Clear();
+	
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	device_destroy(oled_class, MKDEV(major, 0));
+	class_destroy(oled_class);
+	unregister_chrdev(major, "oled");
+	gpiod_put(oled_dc);
+
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/04_oled_write_ioctl/oled_test.c

@@ -0,0 +1,186 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include "font.h"
+
+#define OLED_SET_XY	  		99
+#define OLED_SET_XY_WRITE_DATA  100
+#define OLED_SET_XY_WRITE_DATAS 101
+#define OLED_SET_DATAS	  		102  /* 102为低8位, 高16位用来表示长度 */
+
+int fd;
+
+/**********************************************************************
+	  * 函数名称： OLED_DIsp_Char
+	  * 功能描述：在某个位置显示字符 1-9
+	  * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@c ：要显示的字符的ascii码
+	  * 输出参数： 无
+	  * 返 回 值： 
+	  * 修改日期		版本号	  修改人 	   修改内容
+	  * -----------------------------------------------
+	  * 2020/03/15		  V1.0	   芯晓		   创建
+***********************************************************************/
+void OLED_DIsp_Char(int x, int y, unsigned char c)
+{
+	int i = 0;
+	/* 得到字模 */
+	const unsigned char *dots = oled_asc2_8x16[c - ' '];
+	char pos[2];
+#if 0
+	/* 发给OLED */
+	OLED_DIsp_Set_Pos(x, y);
+	/* 发出8字节数据 */
+	for (i = 0; i < 8; i++)
+		oled_write_cmd_data(dots[i], OLED_DATA);
+#endif
+	pos[0] = x;
+	pos[1] = y;
+
+	ioctl(fd, OLED_SET_XY, pos);
+	ioctl(fd, OLED_SET_DATAS | (8<<8), dots);
+
+#if 0
+	OLED_DIsp_Set_Pos(x, y+1);
+	/* 发出8字节数据 */
+	for (i = 0; i < 8; i++)
+		oled_write_cmd_data(dots[i+8], OLED_DATA);
+#endif	
+	pos[0] = x;
+	pos[1] = y+1;
+
+	ioctl(fd, OLED_SET_XY, pos);
+	ioctl(fd, OLED_SET_DATAS | (8<<8), &dots[8]);
+
+}
+
+
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_String
+	 * 功能描述： 在指定位置显示字符串
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@str ：要显示的字符串
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+***********************************************************************/
+void OLED_DIsp_String(int x, int y, char *str)
+{
+	unsigned char j=0;
+	while (str[j])
+	{		
+		OLED_DIsp_Char(x, y, str[j]);//显示单个字符
+		x += 8;
+		if(x > 127)
+		{
+			x = 0;
+			y += 2;
+		}//移动显示位置
+		j++;
+	}
+}
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_CHinese
+	 * 功能描述：在指定位置显示汉字
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@chr ：要显示的汉字，三个汉字“百问网”中选择一个
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_CHinese(unsigned char x,unsigned char y,unsigned char no)
+{      			    
+	unsigned char t, adder=0;
+	char pos[2];
+
+	pos[0] = x;
+	pos[1] = y;
+	
+	ioctl(fd, OLED_SET_XY, pos);
+	
+    for(t=0;t<16;t++)
+	{//显示上半截字符	
+		//oled_write_cmd_data(hz_1616[no][t*2],OLED_DATA);
+		ioctl(fd, OLED_SET_DATAS | (1<<8), &hz_1616[no][t*2]);
+		
+		adder+=1;
+    }	
+	
+	pos[0] = x;
+	pos[1] = y+1;
+	
+	ioctl(fd, OLED_SET_XY, pos);
+	
+    for(t=0;t<16;t++)
+	{//显示下半截字符
+		//oled_write_cmd_data(hz_1616[no][t*2+1],OLED_DATA);
+		ioctl(fd, OLED_SET_DATAS | (1<<8), &hz_1616[no][t*2+1]);
+		
+		adder+=1;
+    }					
+}
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Test
+	 * 功能描述： 整个屏幕显示测试
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Test(void)
+{ 	
+	int i;
+	
+	OLED_DIsp_String(0, 0, "wiki.100ask.net");
+	OLED_DIsp_String(0, 2, "book.100ask.net");
+	OLED_DIsp_String(0, 4, "bbs.100ask.net");
+	
+	for(i = 0; i < 3; i++)
+	{   //显示汉字 百问网
+		OLED_DIsp_CHinese(32+i*16, 6, i);
+	}
+} 
+
+
+/*
+ * oled_test /dev/myoled
+ */
+
+int main(int argc, char **argv)
+{
+	int buf[2];
+
+	if (argc != 2)
+	{
+		printf("Usage: %s <dev>\n", argv[0]);
+		return -1;
+	}
+	
+	fd = open(argv[1], O_RDWR);
+	if (fd < 0)
+	{
+		printf(" can not open %s\n", argv[1]);
+		return -1;
+	}
+
+	OLED_DIsp_Test();
+	
+	return 0;
+}
+
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/05_dac/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+	$(CROSS_COMPILE)gcc -o dac_test dac_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order   dac_test
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += dac_drv.o
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/05_dac/dac.dts

@@ -0,0 +1,15 @@
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
+
+    dac: dac {
+        compatible = "100ask,dac";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+    };
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/05_dac/dac_drv.c

@@ -0,0 +1,116 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/uaccess.h>
+
+
+struct spi_device *dac_dev;
+static int major;
+static struct class *dac_class;
+
+static 	ssize_t dac_write(struct file *file, const char __user *buf, size_t size, loff_t * offset)
+{
+	unsigned short val = 0;
+	unsigned char ker_buf[4];
+	int err;
+	
+	if (size != 2)
+		return -EINVAL;
+
+	copy_from_user(&val, buf, 2);
+
+	//val = 0x554;
+	val <<= 2;
+	val = val & 0x0fff; /* DAC数据格式: 高4位、低2位为0 */
+
+	ker_buf[0] = val >> 8;
+	ker_buf[1] = val;
+
+	err = spi_write(dac_dev, ker_buf, 2);
+
+	//spi_write(dac_dev, &val, 2);
+	
+	//printk("dac_write err = %d, val = 0x%x, %d, ker_buf[0] = 0x%x, ker_buf[1] = 0x%x\n", err, val, val, ker_buf[0], ker_buf[1]);
+
+	return 2;
+}
+
+/* 定义自己的file_operations结构体                                              */
+static struct file_operations dac_fops = {
+	.owner	 = THIS_MODULE,
+	.write   = dac_write,
+};
+
+static int dac_probe(struct spi_device *spi)
+{	
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	dac_dev = spi;
+
+	/* register_chrdev */
+	major = register_chrdev(0, "dac", &dac_fops);  
+
+	/* class_create */
+	dac_class = class_create(THIS_MODULE, "dac_class");
+
+	/* device_create */
+	device_create(dac_class, NULL, MKDEV(major, 0), NULL, "mydac");
+	
+	return 0;
+}
+
+static int dac_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	device_destroy(dac_class, MKDEV(major, 0));
+	class_destroy(dac_class);
+	unregister_chrdev(major, "dac");
+
+	return 0;
+}
+
+//static const struct spi_device_id dac_spi_ids[] = {
+//	{"100ask,dac", },
+//	{}
+//};
+
+static const struct of_device_id dac_of_match[] = {
+	{.compatible = "100ask,dac"},
+	{}
+};
+
+static struct spi_driver dac_driver = {
+	.driver = {
+		.name	= "dac",
+		.of_match_table = dac_of_match,
+	},
+	.probe		= dac_probe,
+	.remove		= dac_remove,
+	//.id_table	= dac_spi_ids,
+};
+
+int dac_init(void)
+{
+	return spi_register_driver(&dac_driver);
+}
+
+static void dac_exit(void)
+{
+	spi_unregister_driver(&dac_driver);
+}
+
+module_init(dac_init);
+module_exit(dac_exit);
+
+MODULE_LICENSE("GPL v2");
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/05_dac/dac_test.c

@@ -0,0 +1,43 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+/*
+ * dac_test /dev/mydac <val>
+ */
+
+int main(int argc, char **argv)
+{
+	int fd;
+	int buf[2];
+	unsigned short dac_val = 0;
+
+	if (argc != 3)
+	{
+		printf("Usage: %s <dev> <val>\n", argv[0]);
+		return -1;
+	}
+	
+	fd = open(argv[1], O_RDWR);
+	if (fd < 0)
+	{
+		printf(" can not open %s\n", argv[1]);
+		return -1;
+	}
+
+	dac_val = strtoul(argv[2], NULL, 0);
+
+	//while (1)
+	{
+		write(fd, &dac_val, 2);
+	//	dac_val += 50;
+	}
+	
+	return 0;
+}
+
+

IMX6ULL/source/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/05_dac/font.h

@@ -0,0 +1,106 @@
+#ifndef  _FONT_H_
+#define _FONT_H_
+const unsigned char oled_asc2_8x16[95][16]=
+{
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},// 0
+    {0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00},//!1
+    {0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//"2
+    {0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00},//#3
+    {0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00},//$4
+    {0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00},//%5
+    {0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10},//&6
+    {0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//'7
+    {0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00},//(8
+    {0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00},//)9
+    {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},//*10
+    {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},//+11
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00},//,12
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01},//-13
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00},//.14
+    {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},///15
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//016
+    {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//117
+    {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},//218
+    {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},//319
+    {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},//420
+    {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},//521
+    {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},//622
+    {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},//723
+    {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},//824
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},//925
+    {0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00},//:26
+    {0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00},//;27
+    {0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00},//<28
+    {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},//=29
+    {0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00},//>30
+    {0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00},//?31
+    {0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00},//@32
+    {0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20},//A33
+    {0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00},//B34
+    {0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},//C35
+    {0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00},//D36
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00},//E37
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00},//F38
+    {0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00},//G39
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20},//H40
+    {0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//I41
+    {0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00},//J42
+    {0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00},//K43
+    {0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00},//L44
+    {0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00},//M45
+    {0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00},//N46
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00},//O47
+    {0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00},//P48
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00},//Q49
+    {0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20},//R50
+    {0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00},//S51
+    {0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//T52
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//U53
+    {0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00},//V54
+    {0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00},//W55
+    {0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20},//X56
+    {0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//Y57
+    {0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00},//Z58
+    {0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00},//[59
+    {0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00},//\60
+    {0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00},//]61
+    {0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//^62
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},//_63
+    {0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//`64
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20},//a65
+    {0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00},//b66
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00},//c67
+    {0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20},//d68
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00},//e69
+    {0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//f70
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00},//g71
+    {0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//h72
+    {0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//i73
+    {0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00},//j74
+    {0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00},//k75
+    {0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//l76
+    {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F},//m77
+    {0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//n78
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//o79
+    {0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00},//p80
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80},//q81
+    {0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00},//r82
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00},//s83
+    {0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00},//t84
+    {0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20},//u85
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00},//v86
+    {0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00},//w87
+    {0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00},//x88
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00},//y89
+    {0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00},//z90
+    {0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40},//{91
+    {0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00},//|92
+    {0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00},//}93
+    {0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//~94
+};      
+const unsigned char hz_1616[][32]={
+{0x02,0x00,0x02,0x00,0xE2,0xFF,0x22,0x42,0x22,0x42,0x32,0x42,0x2A,0x42,0x26,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0xE2,0xFF,0x02,0x00,0x02,0x00,0x00,0x00},/*"百",0*/
+{0x00,0x00,0xF8,0xFF,0x01,0x00,0x02,0x00,0x00,0x00,0xE2,0x1F,0x22,0x08,0x22,0x08,0x22,0x08,0xE2,0x1F,0x02,0x00,0x02,0x40,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"问",1*/
+{0x00,0x00,0xFE,0xFF,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x0E,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x4E,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"网",2*/
+};
+#endif

README.md

@@ -492,6 +492,12 @@ git clone https://e.coding.net/weidongshan/linux/doc_and_source_for_drivers.git
   02_SPI协议介绍
   ```
   
+* 2021.02.24 发布"SPI子系统"：
+
+  ```shell
+  03_SPI总线设备驱动模型
+  ```
+
 
 
 ## 6. 联系方式
@@ -509,3 +515,7 @@ git clone https://e.coding.net/weidongshan/linux/doc_and_source_for_drivers.git
 
 
 
+
+```
+
+```

STM32MP157/doc_pic/11_SPI/03_SPI总线设备驱动模型.md

@@ -0,0 +1,102 @@
+# SPI总线设备驱动模型 #
+
+参考资料：
+
+* 内核头文件：`include\linux\spi\spi.h`
+
+* 百问网驱动直播课里对应的源码
+  * GIT仓库：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
+  * 源码位置：
+    ![image-20220217163558763](pic/10_ref_code.png)
+  
+* 上述源码也放到了驱动大全的GIT仓库里，位置如下：
+  ![image-20220224174405587](pic/16_ref_code.png)
+
+  
+
+## 1. 回顾平台总线设备驱动模型
+
+Linux驱动程序开始基于"平台总线设备驱动"模型，把驱动程序分成2边：
+
+* 左边注册一个platform_driver结构体，里面是比较固定的、通用的代码
+
+* 右边注册一个platform_device结构体，里面是硬件资源
+
+  * 可以在C文件中注册platform_device
+  * 也可以使用设备树创建一个节点，内核解析设备树时注册platform_device
+
+  
+
+![image-20220217150949592](pic/05_platform_bus_dev_drv.png)
+
+
+
+## 2. 数据结构
+
+SPI子系统中涉及2类硬件：SPI控制器、SPI设备。
+
+![](pic/01_hardware_block.jpg)
+
+
+
+SPI控制器有驱动程序，提供SPI的传输能力。
+
+SPI设备也有自己的驱动程序，提供SPI设备的访问能力：
+
+* 它知道怎么访问这个设备，它知道这个设备的数据含义是什么
+* 它会调用SPI控制器的函数来收发数据。
+
+
+
+### 2.1 SPI控制器数据结构
+
+参考内核文件：`include\linux\spi\spi.h`
+
+Linux中使用spi_master结构体描述SPI控制器，里面最重要的成员就是`transfer`函数指针：
+
+![image-20220217152328571](pic/06_spi_master.png)
+
+### 2.2 SPI设备数据结构
+
+参考内核文件：`include\linux\spi\spi.h`
+
+Linux中使用spi_device结构体描述SPI设备，里面记录有设备的片选引脚、频率、挂在哪个SPI控制器下面：
+
+![image-20220217154345923](pic/07_spi_device.png)
+
+### 2.3 SPI设备驱动
+
+参考内核文件：`include\linux\spi\spi.h`
+
+Linux中使用spi_driver结构体描述SPI设备驱动：
+
+![image-20220217160607732](pic/08_spi_driver.png)
+
+
+
+## 3. SPI驱动框架
+
+![image-20220217163316229](pic/09_spi_drv_frame.png)
+
+
+
+### 3.1 SPI控制器驱动程序
+
+SPI控制器的驱动程序可以基于"平台总线设备驱动"模型来实现：
+
+* 在设备树里描述SPI控制器的硬件信息，在设备树子节点里描述挂在下面的SPI设备的信息
+* 在platform_driver中提供一个probe函数
+  * 它会注册一个spi_master
+  * 还会解析设备树子节点，创建spi_device结构体
+
+
+
+### 3.2 SPI设备驱动程序
+
+跟"平台总线设备驱动模型"类似，Linux中也有一个"SPI总线设备驱动模型"：
+
+* 左边是spi_driver，使用C文件实现，里面有id_table表示能支持哪些SPI设备，有probe函数
+* 右边是spi_device，用来描述SPI设备，比如它的片选引脚、频率
+  * 可以来自设备树：比如由SPI控制器驱动程序解析设备树后创建、注册spi_device
+  * 可以来自C文件：比如使用`spi_register_board_info`创建、注册spi_device
+

STM32MP157/doc_pic/11_SPI/04_SPI设备树处理过程.md

@@ -0,0 +1,52 @@
+# SPI设备树处理过程 #
+
+参考资料：
+
+* 内核头文件：`include\linux\spi\spi.h`
+
+
+
+## 1. 设备树示例
+
+在设备树里，会有一个节点用来表示SPI控制器。
+
+在这个SPI控制器下面，连接有哪些SPI设备？会在设备树里使用子节点来描述SPI设备。
+
+### 1.1 使用GPIO模拟的SPI控制器
+
+![image-20220217181848873](pic/11_spi_master_device_tree.png)
+
+
+
+
+
+### 1.2 IMX6ULL SPI控制器
+
+内核文件：arch/arm/boot/dts/imx6ull.dtsi
+
+![image-20220218101204976](pic/12_imx6ull_spi_master_dts.png)
+
+内核文件：arch/arm/boot/dts/100ask_imx6ull-14x14.dts
+
+![image-20220218103739627](pic/13_imx6ull_spi_dev_dts.png)
+
+
+
+### 1.3 STM32MP157 SPI控制器
+
+内核文件：arch/arm/boot/dts/stm32mp151.dtsi
+
+![image-20220218104433011](pic/14_stm32mp157_spi_master_dts.png)
+
+内核文件：arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dts
+
+![image-20220218104519443](pic/15_stm32mp157_spi_dev_dts.png)
+
+
+
+## 2. 设备树处理过程
+
+
+
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/doc_pic/06_总线设备驱动模型彻底分析.md

@@ -0,0 +1,34 @@
+## 总线设备驱动模型彻底分析
+
+Linux在线培训班的预习资料等，放在GIT仓库里。
+
+GIT仓库地址：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
+
+GIT使用说明：https://download.100ask.org/tools/Software/git/how_to_use_git.html
+
+**注意**：GIT仓库地址无法在浏览器中直接访问，必须使用GIT工具。
+
+
+
+### 1. 预习视频
+
+跟上次课的视频一样：
+
+![image-20211119234511274](pic/06_platform_detail/01_driver_video.png)
+
+![image-20211119234645373](pic/06_platform_detail/02_vides.png)
+
+
+
+### 2. 示例代码
+
+代码在GIT仓库中：
+
+![image-20211123153247720](pic/06_platform_detail/03_source.png)
+
+
+
+### 3. 详细分析
+
+详细分析led_dev.c, led_drv.c中的代码。
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/Makefile

@@ -0,0 +1,17 @@
+ARCH=x86
+CROSS_COMPILE=
+
+KVERSION = $(shell uname -r)
+KERN_DIR =  /lib/modules/$(KVERSION)/build 
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order
+
+obj-m	+= led_drv.o
+obj-m	+= led_dev.o
+obj-m	+= led_dev2.o
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev.c

@@ -0,0 +1,63 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(1),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev2.c

@@ -0,0 +1,64 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(2),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led_second",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+	.driver_override = "100ask_led",
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_dev3.c

@@ -0,0 +1,63 @@
+
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+#include <linux/platform_device.h>
+
+static struct resource resources[] = {
+    {
+            .start = (3<<8)|(3),			
+            .flags = IORESOURCE_IRQ,
+    },
+};
+
+
+static void led_dev_release(struct device *dev)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+}
+
+
+static struct platform_device led_dev = {
+        .name = "100ask_led_3",
+		.num_resources = ARRAY_SIZE(resources),
+		.resource = resources,
+        .dev = {
+                .release = led_dev_release,
+         },
+};
+
+static int __init led_dev_init(void)
+{
+    int err;
+    
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    err = platform_device_register(&led_dev);   
+    
+    return err;
+}
+
+static void __exit led_dev_exit(void)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+    platform_device_unregister(&led_dev);
+}
+
+module_init(led_dev_init);
+module_exit(led_dev_exit);
+
+MODULE_LICENSE("GPL");
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/led_drv.c

@@ -0,0 +1,180 @@
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+
+#include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+
+
+#define LED_MAX_CNT 10
+
+struct led_desc {
+	int pin;
+	int minor;
+};
+
+/* 1. 确定主设备号 */ 
+static int major = 0;
+static struct class *led_class;
+
+static int g_ledcnt = 0;
+static struct led_desc leds_desc[LED_MAX_CNT];
+
+
+
+/* 3. 实现对应的open/read/write等函数，填入file_operations结构体                   */
+static ssize_t led_drv_write (struct file *file, const char __user *buf, size_t size, loff_t *offset)
+{
+	int err;
+	char status;
+	struct inode *inode = file_inode(file);
+	int minor = iminor(inode);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	err = copy_from_user(&status, buf, 1);
+
+	/* 根据次设备号和status控制LED */
+	printk("set led pin 0x%x as %d\n", leds_desc[minor].pin, status);
+	
+	return 1;
+}
+
+static int led_drv_open (struct inode *node, struct file *file)
+{
+	int minor = iminor(node);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* 根据次设备号初始化LED */
+	printk("init led pin 0x%x as output\n", leds_desc[minor].pin);
+	
+	return 0;
+}
+
+
+/* 2. 定义自己的file_operations结构体                                              */
+static struct file_operations led_drv = {
+	.owner	 = THIS_MODULE,
+	.open    = led_drv_open,
+	.write   = led_drv_write,
+};
+
+/* B.1 实现platform_driver的probe函数  */
+static int led_probe(struct platform_device *pdev)
+{	
+	int minor;
+	int i = 0;
+
+	struct resource *res;
+		
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, i++);
+	if (!res)
+		return -EINVAL;
+
+	/* 记录引脚 */
+	minor = g_ledcnt;
+	leds_desc[minor].pin = res->start;
+	leds_desc[minor].minor = minor;
+
+	/* 7.2 辅助信息 */
+	/* 创建设备节点 */
+	device_create(led_class, NULL, MKDEV(major, minor), NULL, "100ask_led%d", minor); /* /dev/100ask_led0,1,... */
+	
+	platform_set_drvdata(pdev, &leds_desc[minor]);
+	
+	g_ledcnt++;
+	
+    return 0;
+}
+
+/* B.2 实现platform_driver的remove函数  */
+static int led_remove(struct platform_device *pdev)
+{
+	struct led_desc *led = platform_get_drvdata(pdev);
+
+	device_destroy(led_class, MKDEV(major, led->minor)); /* /dev/100ask_led0,1,... */
+
+    return 0;
+}
+
+static const struct platform_device_id led_id_table[] = {
+	{"100ask_led",   1},
+	{"100ask_led_3", 2},
+	{"100ask_led_4", 3},
+	{ },
+};
+
+
+/* A. 实现platform_driver  */
+static struct platform_driver led_driver = {
+    .probe      = led_probe,
+    .remove     = led_remove,
+    .driver     = {
+        .name   = "100ask_led",
+    },
+    .id_table = led_id_table,
+};
+
+
+
+/* 4. 把file_operations结构体告诉内核：注册驱动程序register_chrdev                                */
+/* 5. 谁来注册驱动程序啊？得有一个入口函数：安装驱动程序时，就会去调用这个入口函数 */
+static int __init led_init(void)
+{
+	int err;
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	major = register_chrdev(0, "100ask_led", &led_drv);  /* /dev/led */
+
+
+	/* 7.1 辅助信息 */
+	led_class = class_create(THIS_MODULE, "100ask_led_class");
+	err = PTR_ERR(led_class);
+	if (IS_ERR(led_class)) {
+		printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+		unregister_chrdev(major, "led");
+		return -1;
+	}
+
+	/* C. 注册platform_driver	*/
+    err = platform_driver_register(&led_driver); 
+    
+    return err;
+}
+
+/* 6. 有入口函数就应该有出口函数：卸载驱动程序时，就会去调用这个出口函数           */
+static void __exit led_exit(void)
+{
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* C. 反注册platform_driver	*/
+    platform_driver_unregister(&led_driver); 
+
+	class_destroy(led_class);
+	unregister_chrdev(major, "100ask_led");
+}
+
+
+/* 7. 其他完善：提供设备信息，自动创建设备节点                                     */
+
+module_init(led_init);
+module_exit(led_exit);
+
+MODULE_LICENSE("GPL");
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/06_总线设备驱动模型彻底分析/source/06_bus_dev_drv_detail/ledtest.c

@@ -0,0 +1,50 @@
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * ./ledtest /dev/100ask_led0 on
+ * ./ledtest /dev/100ask_led0 off
+ */
+int main(int argc, char **argv)
+{
+	int fd;
+	char status;
+	
+	/* 1. 判断参数 */
+	if (argc != 3) 
+	{
+		printf("Usage: %s <dev> <on | off>\n", argv[0]);
+		return -1;
+	}
+
+	/* 2. 打开文件 */
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1)
+	{
+		printf("can not open file %s\n", argv[1]);
+		return -1;
+	}
+
+	/* 3. 写文件 */
+	if (0 == strcmp(argv[2], "on"))
+	{
+		status = 1;
+		write(fd, &status, 1);
+	}
+	else
+	{
+		status = 0;
+		write(fd, &status, 1);
+	}
+	
+	close(fd);
+	
+	return 0;
+}
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/doc_pic/07_设备树入门.md

@@ -0,0 +1,22 @@
+## 07_设备树入门
+
+Linux在线培训班的预习资料等，放在GIT仓库里。
+
+GIT仓库地址：https://e.coding.net/weidongshan/livestream/doc_and_source_for_livestream.git
+
+GIT使用说明：https://download.100ask.org/tools/Software/git/how_to_use_git.html
+
+**注意**：GIT仓库地址无法在浏览器中直接访问，必须使用GIT工具。
+
+
+
+### 1. 预习视频
+
+跟上次课的视频一样：
+
+![image-20211119234511274](pic/07_device_tree/01_driver_video.png)
+
+![image-20211125145343625](pic/07_device_tree/02_videos.png)
+
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/doc_pic/100ask_imx6ull-14x14.dts

@@ -0,0 +1,937 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "imx6ull.dtsi"
+
+/ {
+    model = "Freescale i.MX6 ULL 14x14 EVK Board";
+    compatible = "fsl,imx6ull-14x14-evk", "fsl,imx6ull";
+
+       myled: myled_for_test {
+                pin = "gpio5_3";
+        };
+
+        myled_ok: myled_for_test_ok {
+                compatible = "100ask,led";
+                pin = "gpio5_3";
+        };
+
+
+    chosen {
+        stdout-path = &uart1;
+    };
+
+    memory {
+        reg = <0x80000000 0x20000000>;
+    };
+
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        linux,cma {
+            compatible = "shared-dma-pool";
+            reusable;
+            size = <0x14000000>;
+            linux,cma-default;
+        };
+    };
+
+    backlight {
+        compatible = "pwm-backlight";
+        pwms = <&pwm1 0 1000>;
+        brightness-levels = <0 1 2 3 4 5 6 8 10>;
+        default-brightness-level = <8>;
+        status = "okay";
+    };
+
+    pxp_v4l2 {
+        compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2";
+        status = "okay";
+    };
+
+    regulators {
+        compatible = "simple-bus";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        reg_can_3v3: regulator@0 {
+            compatible = "regulator-fixed";
+            reg = <0>;
+            regulator-name = "can-3v3";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+        };
+
+        reg_usb_ltemodule: regulator@1 {
+            compatible = "regulator-fixed";
+            regulator-name = "ltemodule-pwr";
+            regulator-min-microvolt = <3800000>;
+            regulator-max-microvolt = <3800000>;
+            gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
+            enable-active-high;
+            regulator-boot-on;
+        };
+
+        reg_gpio_wifi: regulator@2 {
+            compatible = "regulator-fixed";
+            regulator-name = "wifi-pwr";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+            gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+            regulator-boot-on;
+        };
+
+    };
+
+    leds {
+        compatible = "gpio-leds";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_leds>;
+        
+        status = "disabled";
+
+        led0: cpu {
+            label = "cpu";
+            gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+            default-state = "on";
+            linux,default-trigger = "heartbeat";
+        };
+    };
+
+    gpio-keys {
+        compatible = "gpio-keys";
+        pinctrl-names = "default";
+
+        user1 {
+            label = "User1 Button";
+            gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_1>;
+        };
+        
+        user2 {
+            label = "User2 Button";
+            gpios = <&gpio4 14 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_2>;
+        };
+    };
+    sound {
+            compatible = "fsl,imx6ul-evk-wm8960",
+                     "fsl,imx-audio-wm8960";
+            model = "wm8960-audio";
+            cpu-dai = <&sai2>;
+            audio-codec = <&codec>;
+            asrc-controller = <&asrc>;
+            codec-master;
+            gpr = <&gpr 4 0x100000 0x100000>;
+            hp-det = <3 0>;
+            /*hp-det-gpios = <&gpio5 4 0>;
+            mic-det-gpios = <&gpio5 4 0>;*/
+            audio-routing =
+                "Headphone Jack", "HP_L",
+                "Headphone Jack", "HP_R",
+                "Ext Spk", "SPK_LP",
+                "Ext Spk", "SPK_LN",
+                "Ext Spk", "SPK_RP",
+                "Ext Spk", "SPK_RN",
+                "LINPUT2", "Mic Jack",
+                "LINPUT3", "Mic Jack",
+                "RINPUT1", "Main MIC",
+                "RINPUT2", "Main MIC",  
+                "Mic Jack", "MICB",
+                "Main MIC", "MICB",
+                "CPU-Playback", "ASRC-Playback",
+                "Playback", "CPU-Playback",
+                "ASRC-Capture", "CPU-Capture",
+                "CPU-Capture", "Capture";
+                status = "okay";
+        };
+    
+    spi4 {
+        compatible = "spi-gpio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_spi4>;
+        pinctrl-assert-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
+        status = "okay";
+        gpio-sck = <&gpio5 11 0>;
+        gpio-mosi = <&gpio5 10 0>;
+        cs-gpios = <&gpio5 7 0>;
+        num-chipselects = <1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        gpio_spi: gpio_spi@0 {
+            compatible = "fairchild,74hc595";
+            gpio-controller;
+            #gpio-cells = <2>;
+            reg = <0>;
+            registers-number = <1>;
+            registers-default = /bits/ 8 <0x57>;
+            spi-max-frequency = <10000>;
+        };
+    };
+    
+    sii902x_reset: sii902x-reset {
+            compatible = "gpio-reset";
+            reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
+            reset-delay-us = <100000>;
+            #reset-cells = <0>;
+            status = "okay";
+        };
+
+};
+
+&gpmi{
+    status = "disabled";
+};
+&cpu0 {
+    arm-supply = <&reg_arm>;
+    soc-supply = <&reg_soc>;
+};
+
+&clks {
+    assigned-clocks = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <786432000>;
+};
+
+&fec1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet1>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy0>;
+    phy-reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+};
+
+&fec2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet2>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy1>;
+    phy-reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ethphy0: ethernet-phy@0 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <0>;
+        };
+        ethphy1: ethernet-phy@1 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <1>;
+        };
+    };
+};
+
+&flexcan1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_flexcan1>;
+    xceiver-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+&gpc {
+    fsl,cpu_pupscr_sw2iso = <0x1>;
+    fsl,cpu_pupscr_sw = <0x0>;
+    fsl,cpu_pdnscr_iso2sw = <0x1>;
+    fsl,cpu_pdnscr_iso = <0x1>;
+    fsl,ldo-bypass = <0>; /* DCDC, ldo-enable */
+};
+
+&i2c1 {
+    clock-frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c1>;
+    status = "okay";
+};
+
+&i2c2 {
+    clock_frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c2>;
+    status = "okay";
+
+    codec: wm8960@1a {
+        compatible = "wlf,wm8960";
+        reg = <0x1a>;
+        clocks = <&clks IMX6UL_CLK_SAI2>;
+        clock-names = "mclk";
+        wlf,shared-lrclk;
+        };
+         sii902x: sii902x@39 {
+                 compatible = "SiI,sii902x";
+                 pinctrl-names = "default";
+                 reset-names="sii902x";
+                 pinctrl-0 = <&pinctrl_sii902x>;
+                 resets = <&sii902x_reset>;
+                 interrupt-parent = <&gpio1>;
+                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+                 mode_str ="1280x720M@60";
+                 bits-per-pixel = <16>;
+                 reg = <0x39>;
+                 status = "okay";    
+         };
+
+
+        gt9xx@5d {
+                compatible = "goodix,gt9xx";
+                reg = <0x5d>;
+                status = "okay";
+                interrupt-parent = <&gpio1>;
+                interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinctrl_tsc_reset &pinctrl_touchscreen_int>;
+                /*pinctrl-1 = <&pinctrl_tsc_irq>;*/
+                /*pinctrl-names = "default", "int-output-low", "int-output-high", "int-input";
+                pinctrl-0 = <&ts_int_default>;
+                pinctrl-1 = <&ts_int_output_low>;
+                pinctrl-2 = <&ts_int_output_high>;
+                pinctrl-3 = <&ts_int_input>;
+                */
+                reset-gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
+                irq-gpios = <&gpio1 5 IRQ_TYPE_EDGE_FALLING>;
+                irq-flags = <2>;                /*1:rising 2: falling*/
+
+                touchscreen-max-id = <5>;
+                touchscreen-size-x = <800>;
+                touchscreen-size-y = <480>;
+                touchscreen-max-w = <1024>;
+                touchscreen-max-p = <1024>;
+                /*touchscreen-key-map = <172>, <158>;*/ /*KEY_HOMEPAGE, KEY_BACK*/
+
+                goodix,type-a-report = <0>;
+                goodix,driver-send-cfg = <0>;
+                goodix,create-wr-node = <1>;
+                goodix,wakeup-with-reset = <0>;
+                goodix,resume-in-workqueue = <0>;
+                goodix,int-sync = <0>;
+                goodix,swap-x2y = <0>;
+                goodix,esd-protect = <0>;
+                goodix,pen-suppress-finger = <0>;
+                goodix,auto-update = <0>;
+                goodix,auto-update-cfg = <0>;
+                goodix,power-off-sleep = <0>;
+
+                /*7*/
+                goodix,cfg-group0 = [
+                6b 00 04 58 02 05 0d 00 01 0f 
+                28 0f 50 32 03 05 00 00 00 00 
+                00 00 00 00 00 00 00 8a 2a 0c 
+                45 47 0c 08 00 00 00 40 03 2c 
+                00 01 00 00 00 03 64 32 00 00 
+                00 28 64 94 d5 02 07 00 00 04 
+                95 2c 00 8b 34 00 82 3f 00 7d 
+                4c 00 7a 5b 00 7a 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 18 16 14 12 10 0e 0c 0a 
+                08 06 04 02 ff ff 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 16 18 1c 1d 1e 1f 20 21 
+                22 24 13 12 10 0f 0a 08 06 04 
+                02 00 ff ff ff ff ff ff 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 79 01
+                ];
+
+                /*4.3*/
+                goodix,cfg-group1 = [
+                97 E0 01 10 01 05 0D 00 01 00
+                00 05 5A 46 53 11 00 00 11 11
+                14 14 14 22 0A 04 00 00 00 00
+                00 00 53 00 14 00 00 84 00 00
+                3C 00 00 64 1E 28 87 27 08 32
+                34 05 0D 20 33 60 11 02 24 00
+                00 64 80 80 14 02 00 00 54 89
+                68 85 6D 82 72 80 76 7D 7B 7B
+                00 00 00 00 00 00 00 F0 50 3C
+                FF FF 07 00 00 00 02 14 14 03
+                04 00 21 64 0A 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                32 20 50 3C 3C 00 00 00 00 00
+                0D 06 0C 05 0B 04 0A 03 FF FF
+                FF FF FF FF 00 01 02 03 04 05
+                06 07 08 09 0A 0B 0C 0D FF FF
+                FF FF FF FF FF FF FF FF FF FF
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 3C 00 05 1E 00 02
+                2A 1E 19 14 02 00 03 0A 05 00
+                00 00 00 00 00 00 01 FF FF 86
+                22 03 00 00 33 00 0F 00 00 00
+                50 3C 50 00 00 00 00 2A 01
+                ];
+
+                /*5*/
+                goodix,cfg-group2 = [
+                00 20 03 E0 01 05 3C 00 01 08
+                28 0C 50 32 03 05 00 00 00 00
+                00 00 00 17 19 1E 14 8B 2B 0D
+                33 35 0C 08 00 00 00 9A 03 11
+                00 01 00 00 00 00 00 32 00 00
+                00 20 58 94 C5 02 00 00 00 04
+                B0 23 00 93 2B 00 7B 35 00 69
+                41 00 5B 4F 00 5B 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 02 04 06 08 0A 0C 0E 10
+                12 14 16 18 1A FF 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 02 04 06 08 0A 0C 0F
+                10 12 13 16 18 1C 1D 1E 1F 20
+                21 22 24 26 FF FF FF FF 00 00
+                00 FF FF FF FF FF FF FF FF FF
+                FF FF FF FF 48 01
+                ];
+
+        };
+
+
+};
+
+&iomuxc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_hog_1>;
+    imx6ul-evk {
+        pinctrl_hog_1: hoggrp-1 {
+            fsl,pins = <
+                MX6UL_PAD_UART1_RTS_B__GPIO1_IO19   0x17059 /* SD1 CD */
+                MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID    0x17059 /* USB OTG1 ID */
+                // MX6UL_PAD_CSI_DATA07__GPIO4_IO28           0x000010B0
+                MX6ULL_PAD_SNVS_TAMPER5__GPIO5_IO05        0x000110A0
+            >;
+        };
+                pinctrl_sii902x: hdmigrp {
+                fsl,pins = <
+                        MX6UL_PAD_UART1_CTS_B__GPIO1_IO18 0x59
+                            >;
+            };
+                pinctrl_touchscreen_int: lcdif_tsc_int {
+                fsl,pins = <
+                        MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x000010B0
+                            >;
+                        };
+        pinctrl_enet1: enet1grp {
+            fsl,pins = <
+            >;
+        };
+
+        pinctrl_enet2: enet2grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO06__ENET2_MDIO    0x1b0b0
+                MX6UL_PAD_GPIO1_IO07__ENET2_MDC     0x1b0b0
+                MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2  0x4001b031
+                MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b031
+            >;
+        };
+
+        pinctrl_flexcan1: flexcan1grp{
+            fsl,pins = <
+                MX6UL_PAD_UART3_CTS_B__FLEXCAN1_TX         0x000010B0
+                MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX         0x000010B0
+            >;
+        };
+
+        pinctrl_i2c1: i2c1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART4_TX_DATA__I2C1_SCL 0x4001b8b0
+                MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_i2c2: i2c2grp {
+            fsl,pins = <
+                MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0
+                MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_ecspi3: ecspi3 {              
+                    fsl,pins = <
+                MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI         0x000010B0
+                MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO         0x000010B0
+                MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK       0x000010B0
+                //MX6UL_PAD_UART2_TX_DATA__ECSPI3_SS0        0x000010B0
+                MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20        0x000010B0
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01           0x000010B0
+            >;
+        };
+
+        pinctrl_ecspi1: ecspi1 {
+                     fsl,pins = <
+                 MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK         0x000010B0
+                 MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI         0x000010B0
+                 MX6UL_PAD_CSI_DATA07__ECSPI1_MISO         0x000010B0
+                 MX6UL_PAD_CSI_DATA05__GPIO4_IO26          0x000010B0
+                 MX6UL_PAD_CSI_DATA03__GPIO4_IO24          0x000010B0
+             >;
+         };
+
+        pinctrl_uart3: uart3grp {
+            fsl,pins = <
+                MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX   0x1b0b1
+                MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX   0x1b0b1
+            >;
+        };
+        
+        pinctrl_uart1: uart1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+                MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+            >;
+        };
+
+        pinctrl_uart6: uart6grp {
+             fsl,pins = <
+                 MX6UL_PAD_CSI_MCLK__UART6_DCE_TX      0x1b0b1
+                 MX6UL_PAD_CSI_PIXCLK__UART6_DCE_RX    0x1b0b1
+             >;
+         };
+
+
+        pinctrl_sai2: sai2grp {
+            fsl,pins = <
+                MX6UL_PAD_JTAG_TDI__SAI2_TX_BCLK    0x17088
+                MX6UL_PAD_JTAG_TDO__SAI2_TX_SYNC    0x17088
+                MX6UL_PAD_JTAG_TRST_B__SAI2_TX_DATA 0x11088
+                MX6UL_PAD_JTAG_TCK__SAI2_RX_DATA    0x11088
+                MX6UL_PAD_JTAG_TMS__SAI2_MCLK       0x17088
+            >;
+        };
+
+        pinctrl_tsc: tscgrp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01    0xb0
+                MX6UL_PAD_GPIO1_IO02__GPIO1_IO02    0xb0
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03    0xb0
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04    0xb0
+            >;
+        };
+
+        pinctrl_usdhc1: usdhc1grp {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x17059
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x10071
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170b9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100b9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170f9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100f9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
+            >;
+        };
+
+        pinctrl_usdhc2: usdhc2grp {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit: usdhc2grp_8bit {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_100mhz: usdhc2grp_8bit_100mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100b9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170b9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170b9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170b9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170b9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170b9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170b9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170b9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170b9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_200mhz: usdhc2grp_8bit_200mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100f9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170f9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+            >;
+        };
+        pinctrl_lcdif_dat: lcdifdatgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+                MX6UL_PAD_LCD_DATA16__LCDIF_DATA16  0x79
+                MX6UL_PAD_LCD_DATA17__LCDIF_DATA17  0x79
+                MX6UL_PAD_LCD_DATA18__LCDIF_DATA18  0x79
+                MX6UL_PAD_LCD_DATA19__LCDIF_DATA19  0x79
+                MX6UL_PAD_LCD_DATA20__LCDIF_DATA20  0x79
+                MX6UL_PAD_LCD_DATA21__LCDIF_DATA21  0x79
+                MX6UL_PAD_LCD_DATA22__LCDIF_DATA22  0x79
+                MX6UL_PAD_LCD_DATA23__LCDIF_DATA23  0x79
+            >;
+        };
+
+        pinctrl_lcdif_dat_16bits: lcdifdatgrp_16bits {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+            >;
+        };
+
+        pinctrl_lcdif_ctrl: lcdifctrlgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_CLK__LCDIF_CLK        0x79
+                MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE  0x79
+                MX6UL_PAD_LCD_HSYNC__LCDIF_HSYNC    0x79
+                MX6UL_PAD_LCD_VSYNC__LCDIF_VSYNC    0x79
+            >;
+        };
+        pinctrl_pwm1: pwm1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0
+            >;
+        };
+        pinctrl_lcdif_reset: lcdifresetgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_RESET__GPIO3_IO04     0x1b0b0
+            >;
+        };
+
+        pinctrl_adc1: adc1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03          0x000010B1
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04          0x000010B1
+                >;
+        };
+
+    };
+};
+
+&iomuxc_snvs {
+    pinctrl-names = "default_snvs";
+    pinctrl-0 = <&pinctrl_hog_2>;
+    imx6ul-evk {
+        pinctrl_hog_2: hoggrp-2 {
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09     0x1b0b0 /* enet1 reset */
+                MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06     0x1b0b0 /* enet2 reset */
+                MX6ULL_PAD_SNVS_TAMPER1__GPIO5_IO01     0x000110A0 /*key 1*/
+            >;
+        };
+
+         pinctrl_tsc_reset: tscresetgrp  {        /*!< Function assigned for the core: Cortex-A7[ca7] */
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER2__GPIO5_IO02        0x000110A0
+            >;
+        };
+
+        pinctrl_spi4: spi4grp {
+            fsl,pins = <
+                MX6ULL_PAD_BOOT_MODE0__GPIO5_IO10        0x70a1
+                MX6ULL_PAD_BOOT_MODE1__GPIO5_IO11        0x70a1
+                MX6ULL_PAD_SNVS_TAMPER7__GPIO5_IO07      0x70a1
+                MX6ULL_PAD_SNVS_TAMPER8__GPIO5_IO08      0x80000000
+            >;
+        };
+
+        pinctrl_leds: ledgrp {
+            fsl,pins = <
+                  MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03        0x000110A0
+            >;
+        };
+
+        pinctrl_485_ctl: uart3_rs485 {
+            fsl,pins = <
+            MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00     0x1b0b0
+            >;
+        };
+        
+    };
+};
+
+&lcdif {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_lcdif_dat
+             &pinctrl_lcdif_ctrl
+             &pinctrl_lcdif_reset>; 
+    display = <&display0>;
+    status = "okay";
+    reset-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; /* 100ask */
+
+    display0: display {
+        bits-per-pixel = <24>;
+        bus-width = <24>;
+
+        display-timings {
+            native-mode = <&timing0>;
+
+             timing0: timing0_1024x768 {
+             clock-frequency = <50000000>;
+             hactive = <1024>;
+             vactive = <600>;
+             hfront-porch = <160>;
+             hback-porch = <140>;
+             hsync-len = <20>;
+             vback-porch = <20>;
+             vfront-porch = <12>;
+             vsync-len = <3>;
+
+             hsync-active = <0>;
+             vsync-active = <0>;
+             de-active = <1>;
+             pixelclk-active = <0>;
+             };
+
+        };
+    };
+};
+
+&pwm1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_pwm1>;
+    status = "okay";
+};
+
+&pxp {
+    status = "okay";
+};
+&ecspi3 { 
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi3>;
+    cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    
+    
+    spidev: icm20608@0{
+        compatible = "invensense,icm20608";
+        interrupt-parent = <&gpio1>;
+        interrupts = <1 1>;
+        spi-max-frequency = <8000000>; 
+        reg = <0>; 
+    };
+};
+
+&sai2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_sai2>;
+
+    assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
+              <&clks IMX6UL_CLK_SAI2>;
+    assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <0>, <12288000>;
+
+    status = "okay";
+};
+
+&tsc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_tsc>;
+    xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
+    measure-delay-time = <0xfffff>;
+    pre-charge-time = <0xffff>;
+    status = "okay";
+};
+
+&uart1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart1>;
+    status = "okay";
+};
+&uart3 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart3
+             &pinctrl_485_ctl>;
+    //pinctrl-0 = <&pinctrl_uart3>;
+    //fsl,rs485-gpio-txen = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    //rts-gpio = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    rs485-rts-active-high;
+    //rs485-rts-active-high;
+        rs485-rx-during-tx;
+        rs485-rts-delay = <100 100>;
+        linux,rs485-enabled-at-boot-time;
+    status = "okay";
+};
+ 
+&uart6 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart6>;
+    status = "okay";
+};
+
+
+&usbotg1 {
+    dr_mode = "otg";
+    srp-disable;
+    hnp-disable;
+    adp-disable;
+    status = "okay";
+};
+
+&usbotg2 {
+    dr_mode = "host";
+    disable-over-current;
+    status = "okay";
+};
+
+&usbphy1 {
+    tx-d-cal = <0x5>;
+};
+
+&usbphy2 {
+    tx-d-cal = <0x5>;
+};
+
+&usdhc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_usdhc1>;
+    cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+    keep-power-in-suspend;
+    enable-sdio-wakeup;
+    bus-width = <4>;
+    status = "okay";
+};
+
+&usdhc2 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_usdhc2_8bit>;
+        bus-width = <8>;
+        non-removable;
+        status = "okay";
+};
+
+&wdog1 {
+    status = "okay";
+};
+
+&adc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_adc1>;
+    num-channels = <5>;
+    vref-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+    
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    /*   
+    spidev0: spi@0 {
+        compatible = "rohm,dh2228fv";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+    };
+    
+    spidev1: spi@1 {
+        compatible = "rohm,dh2228fv";
+        reg = <1>;
+        spi-max-frequency = <5000000>;
+    };
+    */
+    
+};
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/100ask_imx6ull-14x14.dts

@@ -0,0 +1,937 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "imx6ull.dtsi"
+
+/ {
+    model = "Freescale i.MX6 ULL 14x14 EVK Board";
+    compatible = "fsl,imx6ull-14x14-evk", "fsl,imx6ull";
+
+       myled: myled_for_test {
+                pin = "gpio5_3";
+        };
+
+        myled_ok: myled_for_test_ok {
+                compatible = "100ask,led";
+                pin = "gpio5_3";
+        };
+
+
+    chosen {
+        stdout-path = &uart1;
+    };
+
+    memory {
+        reg = <0x80000000 0x20000000>;
+    };
+
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        linux,cma {
+            compatible = "shared-dma-pool";
+            reusable;
+            size = <0x14000000>;
+            linux,cma-default;
+        };
+    };
+
+    backlight {
+        compatible = "pwm-backlight";
+        pwms = <&pwm1 0 1000>;
+        brightness-levels = <0 1 2 3 4 5 6 8 10>;
+        default-brightness-level = <8>;
+        status = "okay";
+    };
+
+    pxp_v4l2 {
+        compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2";
+        status = "okay";
+    };
+
+    regulators {
+        compatible = "simple-bus";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        reg_can_3v3: regulator@0 {
+            compatible = "regulator-fixed";
+            reg = <0>;
+            regulator-name = "can-3v3";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+        };
+
+        reg_usb_ltemodule: regulator@1 {
+            compatible = "regulator-fixed";
+            regulator-name = "ltemodule-pwr";
+            regulator-min-microvolt = <3800000>;
+            regulator-max-microvolt = <3800000>;
+            gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
+            enable-active-high;
+            regulator-boot-on;
+        };
+
+        reg_gpio_wifi: regulator@2 {
+            compatible = "regulator-fixed";
+            regulator-name = "wifi-pwr";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+            gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+            regulator-boot-on;
+        };
+
+    };
+
+    leds {
+        compatible = "gpio-leds";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_leds>;
+        
+        status = "disabled";
+
+        led0: cpu {
+            label = "cpu";
+            gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+            default-state = "on";
+            linux,default-trigger = "heartbeat";
+        };
+    };
+
+    gpio-keys {
+        compatible = "gpio-keys";
+        pinctrl-names = "default";
+
+        user1 {
+            label = "User1 Button";
+            gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_1>;
+        };
+        
+        user2 {
+            label = "User2 Button";
+            gpios = <&gpio4 14 GPIO_ACTIVE_LOW>;
+            gpio-key,wakeup;
+            linux,code = <KEY_2>;
+        };
+    };
+    sound {
+            compatible = "fsl,imx6ul-evk-wm8960",
+                     "fsl,imx-audio-wm8960";
+            model = "wm8960-audio";
+            cpu-dai = <&sai2>;
+            audio-codec = <&codec>;
+            asrc-controller = <&asrc>;
+            codec-master;
+            gpr = <&gpr 4 0x100000 0x100000>;
+            hp-det = <3 0>;
+            /*hp-det-gpios = <&gpio5 4 0>;
+            mic-det-gpios = <&gpio5 4 0>;*/
+            audio-routing =
+                "Headphone Jack", "HP_L",
+                "Headphone Jack", "HP_R",
+                "Ext Spk", "SPK_LP",
+                "Ext Spk", "SPK_LN",
+                "Ext Spk", "SPK_RP",
+                "Ext Spk", "SPK_RN",
+                "LINPUT2", "Mic Jack",
+                "LINPUT3", "Mic Jack",
+                "RINPUT1", "Main MIC",
+                "RINPUT2", "Main MIC",  
+                "Mic Jack", "MICB",
+                "Main MIC", "MICB",
+                "CPU-Playback", "ASRC-Playback",
+                "Playback", "CPU-Playback",
+                "ASRC-Capture", "CPU-Capture",
+                "CPU-Capture", "Capture";
+                status = "okay";
+        };
+    
+    spi4 {
+        compatible = "spi-gpio";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_spi4>;
+        pinctrl-assert-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
+        status = "okay";
+        gpio-sck = <&gpio5 11 0>;
+        gpio-mosi = <&gpio5 10 0>;
+        cs-gpios = <&gpio5 7 0>;
+        num-chipselects = <1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        gpio_spi: gpio_spi@0 {
+            compatible = "fairchild,74hc595";
+            gpio-controller;
+            #gpio-cells = <2>;
+            reg = <0>;
+            registers-number = <1>;
+            registers-default = /bits/ 8 <0x57>;
+            spi-max-frequency = <10000>;
+        };
+    };
+    
+    sii902x_reset: sii902x-reset {
+            compatible = "gpio-reset";
+            reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
+            reset-delay-us = <100000>;
+            #reset-cells = <0>;
+            status = "okay";
+        };
+
+};
+
+&gpmi{
+    status = "disabled";
+};
+&cpu0 {
+    arm-supply = <&reg_arm>;
+    soc-supply = <&reg_soc>;
+};
+
+&clks {
+    assigned-clocks = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <786432000>;
+};
+
+&fec1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet1>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy0>;
+    phy-reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+};
+
+&fec2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_enet2>;
+    phy-mode = "rmii";
+    phy-handle = <&ethphy1>;
+    phy-reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>;
+    phy-reset-duration = <26>;
+    status = "okay";
+
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ethphy0: ethernet-phy@0 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <0>;
+        };
+        ethphy1: ethernet-phy@1 {
+            compatible = "ethernet-phy-ieee802.3-c22";
+            smsc,disable-energy-detect;
+            reg = <1>;
+        };
+    };
+};
+
+&flexcan1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_flexcan1>;
+    xceiver-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+&gpc {
+    fsl,cpu_pupscr_sw2iso = <0x1>;
+    fsl,cpu_pupscr_sw = <0x0>;
+    fsl,cpu_pdnscr_iso2sw = <0x1>;
+    fsl,cpu_pdnscr_iso = <0x1>;
+    fsl,ldo-bypass = <0>; /* DCDC, ldo-enable */
+};
+
+&i2c1 {
+    clock-frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c1>;
+    status = "okay";
+};
+
+&i2c2 {
+    clock_frequency = <100000>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_i2c2>;
+    status = "okay";
+
+    codec: wm8960@1a {
+        compatible = "wlf,wm8960";
+        reg = <0x1a>;
+        clocks = <&clks IMX6UL_CLK_SAI2>;
+        clock-names = "mclk";
+        wlf,shared-lrclk;
+        };
+         sii902x: sii902x@39 {
+                 compatible = "SiI,sii902x";
+                 pinctrl-names = "default";
+                 reset-names="sii902x";
+                 pinctrl-0 = <&pinctrl_sii902x>;
+                 resets = <&sii902x_reset>;
+                 interrupt-parent = <&gpio1>;
+                 interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+                 mode_str ="1280x720M@60";
+                 bits-per-pixel = <16>;
+                 reg = <0x39>;
+                 status = "okay";    
+         };
+
+
+        gt9xx@5d {
+                compatible = "goodix,gt9xx";
+                reg = <0x5d>;
+                status = "okay";
+                interrupt-parent = <&gpio1>;
+                interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinctrl_tsc_reset &pinctrl_touchscreen_int>;
+                /*pinctrl-1 = <&pinctrl_tsc_irq>;*/
+                /*pinctrl-names = "default", "int-output-low", "int-output-high", "int-input";
+                pinctrl-0 = <&ts_int_default>;
+                pinctrl-1 = <&ts_int_output_low>;
+                pinctrl-2 = <&ts_int_output_high>;
+                pinctrl-3 = <&ts_int_input>;
+                */
+                reset-gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
+                irq-gpios = <&gpio1 5 IRQ_TYPE_EDGE_FALLING>;
+                irq-flags = <2>;                /*1:rising 2: falling*/
+
+                touchscreen-max-id = <5>;
+                touchscreen-size-x = <800>;
+                touchscreen-size-y = <480>;
+                touchscreen-max-w = <1024>;
+                touchscreen-max-p = <1024>;
+                /*touchscreen-key-map = <172>, <158>;*/ /*KEY_HOMEPAGE, KEY_BACK*/
+
+                goodix,type-a-report = <0>;
+                goodix,driver-send-cfg = <0>;
+                goodix,create-wr-node = <1>;
+                goodix,wakeup-with-reset = <0>;
+                goodix,resume-in-workqueue = <0>;
+                goodix,int-sync = <0>;
+                goodix,swap-x2y = <0>;
+                goodix,esd-protect = <0>;
+                goodix,pen-suppress-finger = <0>;
+                goodix,auto-update = <0>;
+                goodix,auto-update-cfg = <0>;
+                goodix,power-off-sleep = <0>;
+
+                /*7*/
+                goodix,cfg-group0 = [
+                6b 00 04 58 02 05 0d 00 01 0f 
+                28 0f 50 32 03 05 00 00 00 00 
+                00 00 00 00 00 00 00 8a 2a 0c 
+                45 47 0c 08 00 00 00 40 03 2c 
+                00 01 00 00 00 03 64 32 00 00 
+                00 28 64 94 d5 02 07 00 00 04 
+                95 2c 00 8b 34 00 82 3f 00 7d 
+                4c 00 7a 5b 00 7a 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 18 16 14 12 10 0e 0c 0a 
+                08 06 04 02 ff ff 00 00 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 16 18 1c 1d 1e 1f 20 21 
+                22 24 13 12 10 0f 0a 08 06 04 
+                02 00 ff ff ff ff ff ff 00 00 
+                00 00 00 00 00 00 00 00 00 00 
+                00 00 00 00 79 01
+                ];
+
+                /*4.3*/
+                goodix,cfg-group1 = [
+                97 E0 01 10 01 05 0D 00 01 00
+                00 05 5A 46 53 11 00 00 11 11
+                14 14 14 22 0A 04 00 00 00 00
+                00 00 53 00 14 00 00 84 00 00
+                3C 00 00 64 1E 28 87 27 08 32
+                34 05 0D 20 33 60 11 02 24 00
+                00 64 80 80 14 02 00 00 54 89
+                68 85 6D 82 72 80 76 7D 7B 7B
+                00 00 00 00 00 00 00 F0 50 3C
+                FF FF 07 00 00 00 02 14 14 03
+                04 00 21 64 0A 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                32 20 50 3C 3C 00 00 00 00 00
+                0D 06 0C 05 0B 04 0A 03 FF FF
+                FF FF FF FF 00 01 02 03 04 05
+                06 07 08 09 0A 0B 0C 0D FF FF
+                FF FF FF FF FF FF FF FF FF FF
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 3C 00 05 1E 00 02
+                2A 1E 19 14 02 00 03 0A 05 00
+                00 00 00 00 00 00 01 FF FF 86
+                22 03 00 00 33 00 0F 00 00 00
+                50 3C 50 00 00 00 00 2A 01
+                ];
+
+                /*5*/
+                goodix,cfg-group2 = [
+                00 20 03 E0 01 05 3C 00 01 08
+                28 0C 50 32 03 05 00 00 00 00
+                00 00 00 17 19 1E 14 8B 2B 0D
+                33 35 0C 08 00 00 00 9A 03 11
+                00 01 00 00 00 00 00 32 00 00
+                00 20 58 94 C5 02 00 00 00 04
+                B0 23 00 93 2B 00 7B 35 00 69
+                41 00 5B 4F 00 5B 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 02 04 06 08 0A 0C 0E 10
+                12 14 16 18 1A FF 00 00 00 00
+                00 00 00 00 00 00 00 00 00 00
+                00 00 00 02 04 06 08 0A 0C 0F
+                10 12 13 16 18 1C 1D 1E 1F 20
+                21 22 24 26 FF FF FF FF 00 00
+                00 FF FF FF FF FF FF FF FF FF
+                FF FF FF FF 48 01
+                ];
+
+        };
+
+
+};
+
+&iomuxc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_hog_1>;
+    imx6ul-evk {
+        pinctrl_hog_1: hoggrp-1 {
+            fsl,pins = <
+                MX6UL_PAD_UART1_RTS_B__GPIO1_IO19   0x17059 /* SD1 CD */
+                MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID    0x17059 /* USB OTG1 ID */
+                // MX6UL_PAD_CSI_DATA07__GPIO4_IO28           0x000010B0
+                MX6ULL_PAD_SNVS_TAMPER5__GPIO5_IO05        0x000110A0
+            >;
+        };
+                pinctrl_sii902x: hdmigrp {
+                fsl,pins = <
+                        MX6UL_PAD_UART1_CTS_B__GPIO1_IO18 0x59
+                            >;
+            };
+                pinctrl_touchscreen_int: lcdif_tsc_int {
+                fsl,pins = <
+                        MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x000010B0
+                            >;
+                        };
+        pinctrl_enet1: enet1grp {
+            fsl,pins = <
+            >;
+        };
+
+        pinctrl_enet2: enet2grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO06__ENET2_MDIO    0x1b0b0
+                MX6UL_PAD_GPIO1_IO07__ENET2_MDC     0x1b0b0
+                MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2  0x4001b031
+                MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER  0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN  0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
+                MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
+                MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b031
+            >;
+        };
+
+        pinctrl_flexcan1: flexcan1grp{
+            fsl,pins = <
+                MX6UL_PAD_UART3_CTS_B__FLEXCAN1_TX         0x000010B0
+                MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX         0x000010B0
+            >;
+        };
+
+        pinctrl_i2c1: i2c1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART4_TX_DATA__I2C1_SCL 0x4001b8b0
+                MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_i2c2: i2c2grp {
+            fsl,pins = <
+                MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0
+                MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0
+            >;
+        };
+
+        pinctrl_ecspi3: ecspi3 {              
+                    fsl,pins = <
+                MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI         0x000010B0
+                MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO         0x000010B0
+                MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK       0x000010B0
+                //MX6UL_PAD_UART2_TX_DATA__ECSPI3_SS0        0x000010B0
+                MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20        0x000010B0
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01           0x000010B0
+            >;
+        };
+
+        pinctrl_ecspi1: ecspi1 {
+                     fsl,pins = <
+                 MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK         0x000010B0
+                 MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI         0x000010B0
+                 MX6UL_PAD_CSI_DATA07__ECSPI1_MISO         0x000010B0
+                 MX6UL_PAD_CSI_DATA05__GPIO4_IO26          0x000010B0
+                 MX6UL_PAD_CSI_DATA03__GPIO4_IO24          0x000010B0
+             >;
+         };
+
+        pinctrl_uart3: uart3grp {
+            fsl,pins = <
+                MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX   0x1b0b1
+                MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX   0x1b0b1
+            >;
+        };
+        
+        pinctrl_uart1: uart1grp {
+            fsl,pins = <
+                MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+                MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+            >;
+        };
+
+        pinctrl_uart6: uart6grp {
+             fsl,pins = <
+                 MX6UL_PAD_CSI_MCLK__UART6_DCE_TX      0x1b0b1
+                 MX6UL_PAD_CSI_PIXCLK__UART6_DCE_RX    0x1b0b1
+             >;
+         };
+
+
+        pinctrl_sai2: sai2grp {
+            fsl,pins = <
+                MX6UL_PAD_JTAG_TDI__SAI2_TX_BCLK    0x17088
+                MX6UL_PAD_JTAG_TDO__SAI2_TX_SYNC    0x17088
+                MX6UL_PAD_JTAG_TRST_B__SAI2_TX_DATA 0x11088
+                MX6UL_PAD_JTAG_TCK__SAI2_RX_DATA    0x11088
+                MX6UL_PAD_JTAG_TMS__SAI2_MCLK       0x17088
+            >;
+        };
+
+        pinctrl_tsc: tscgrp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO01__GPIO1_IO01    0xb0
+                MX6UL_PAD_GPIO1_IO02__GPIO1_IO02    0xb0
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03    0xb0
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04    0xb0
+            >;
+        };
+
+        pinctrl_usdhc1: usdhc1grp {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x17059
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x10071
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170b9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100b9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+            fsl,pins = <
+                MX6UL_PAD_SD1_CMD__USDHC1_CMD     0x170f9
+                MX6UL_PAD_SD1_CLK__USDHC1_CLK     0x100f9
+                MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
+                MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
+                MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
+                MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
+            >;
+        };
+
+        pinctrl_usdhc2: usdhc2grp {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit: usdhc2grp_8bit {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x10069
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_100mhz: usdhc2grp_8bit_100mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100b9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170b9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170b9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170b9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170b9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170b9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170b9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170b9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170b9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170b9
+            >;
+        };
+
+        pinctrl_usdhc2_8bit_200mhz: usdhc2grp_8bit_200mhz {
+            fsl,pins = <
+                MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x100f9
+                MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x170f9
+                MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+                MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+                MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+                MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+                MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+                MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+                MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+                MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+            >;
+        };
+        pinctrl_lcdif_dat: lcdifdatgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+                MX6UL_PAD_LCD_DATA16__LCDIF_DATA16  0x79
+                MX6UL_PAD_LCD_DATA17__LCDIF_DATA17  0x79
+                MX6UL_PAD_LCD_DATA18__LCDIF_DATA18  0x79
+                MX6UL_PAD_LCD_DATA19__LCDIF_DATA19  0x79
+                MX6UL_PAD_LCD_DATA20__LCDIF_DATA20  0x79
+                MX6UL_PAD_LCD_DATA21__LCDIF_DATA21  0x79
+                MX6UL_PAD_LCD_DATA22__LCDIF_DATA22  0x79
+                MX6UL_PAD_LCD_DATA23__LCDIF_DATA23  0x79
+            >;
+        };
+
+        pinctrl_lcdif_dat_16bits: lcdifdatgrp_16bits {
+            fsl,pins = <
+                MX6UL_PAD_LCD_DATA00__LCDIF_DATA00  0x79
+                MX6UL_PAD_LCD_DATA01__LCDIF_DATA01  0x79
+                MX6UL_PAD_LCD_DATA02__LCDIF_DATA02  0x79
+                MX6UL_PAD_LCD_DATA03__LCDIF_DATA03  0x79
+                MX6UL_PAD_LCD_DATA04__LCDIF_DATA04  0x79
+                MX6UL_PAD_LCD_DATA05__LCDIF_DATA05  0x79
+                MX6UL_PAD_LCD_DATA06__LCDIF_DATA06  0x79
+                MX6UL_PAD_LCD_DATA07__LCDIF_DATA07  0x79
+                MX6UL_PAD_LCD_DATA08__LCDIF_DATA08  0x79
+                MX6UL_PAD_LCD_DATA09__LCDIF_DATA09  0x79
+                MX6UL_PAD_LCD_DATA10__LCDIF_DATA10  0x79
+                MX6UL_PAD_LCD_DATA11__LCDIF_DATA11  0x79
+                MX6UL_PAD_LCD_DATA12__LCDIF_DATA12  0x79
+                MX6UL_PAD_LCD_DATA13__LCDIF_DATA13  0x79
+                MX6UL_PAD_LCD_DATA14__LCDIF_DATA14  0x79
+                MX6UL_PAD_LCD_DATA15__LCDIF_DATA15  0x79
+            >;
+        };
+
+        pinctrl_lcdif_ctrl: lcdifctrlgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_CLK__LCDIF_CLK        0x79
+                MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE  0x79
+                MX6UL_PAD_LCD_HSYNC__LCDIF_HSYNC    0x79
+                MX6UL_PAD_LCD_VSYNC__LCDIF_VSYNC    0x79
+            >;
+        };
+        pinctrl_pwm1: pwm1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO08__PWM1_OUT   0x110b0
+            >;
+        };
+        pinctrl_lcdif_reset: lcdifresetgrp {
+            fsl,pins = <
+                MX6UL_PAD_LCD_RESET__GPIO3_IO04     0x1b0b0
+            >;
+        };
+
+        pinctrl_adc1: adc1grp {
+            fsl,pins = <
+                MX6UL_PAD_GPIO1_IO03__GPIO1_IO03          0x000010B1
+                MX6UL_PAD_GPIO1_IO04__GPIO1_IO04          0x000010B1
+                >;
+        };
+
+    };
+};
+
+&iomuxc_snvs {
+    pinctrl-names = "default_snvs";
+    pinctrl-0 = <&pinctrl_hog_2>;
+    imx6ul-evk {
+        pinctrl_hog_2: hoggrp-2 {
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09     0x1b0b0 /* enet1 reset */
+                MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06     0x1b0b0 /* enet2 reset */
+                MX6ULL_PAD_SNVS_TAMPER1__GPIO5_IO01     0x000110A0 /*key 1*/
+            >;
+        };
+
+         pinctrl_tsc_reset: tscresetgrp  {        /*!< Function assigned for the core: Cortex-A7[ca7] */
+            fsl,pins = <
+                MX6ULL_PAD_SNVS_TAMPER2__GPIO5_IO02        0x000110A0
+            >;
+        };
+
+        pinctrl_spi4: spi4grp {
+            fsl,pins = <
+                MX6ULL_PAD_BOOT_MODE0__GPIO5_IO10        0x70a1
+                MX6ULL_PAD_BOOT_MODE1__GPIO5_IO11        0x70a1
+                MX6ULL_PAD_SNVS_TAMPER7__GPIO5_IO07      0x70a1
+                MX6ULL_PAD_SNVS_TAMPER8__GPIO5_IO08      0x80000000
+            >;
+        };
+
+        pinctrl_leds: ledgrp {
+            fsl,pins = <
+                  MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03        0x000110A0
+            >;
+        };
+
+        pinctrl_485_ctl: uart3_rs485 {
+            fsl,pins = <
+            MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00     0x1b0b0
+            >;
+        };
+        
+    };
+};
+
+&lcdif {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_lcdif_dat
+             &pinctrl_lcdif_ctrl
+             &pinctrl_lcdif_reset>; 
+    display = <&display0>;
+    status = "okay";
+    reset-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; /* 100ask */
+
+    display0: display {
+        bits-per-pixel = <24>;
+        bus-width = <24>;
+
+        display-timings {
+            native-mode = <&timing0>;
+
+             timing0: timing0_1024x768 {
+             clock-frequency = <50000000>;
+             hactive = <1024>;
+             vactive = <600>;
+             hfront-porch = <160>;
+             hback-porch = <140>;
+             hsync-len = <20>;
+             vback-porch = <20>;
+             vfront-porch = <12>;
+             vsync-len = <3>;
+
+             hsync-active = <0>;
+             vsync-active = <0>;
+             de-active = <1>;
+             pixelclk-active = <0>;
+             };
+
+        };
+    };
+};
+
+&pwm1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_pwm1>;
+    status = "okay";
+};
+
+&pxp {
+    status = "okay";
+};
+&ecspi3 { 
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi3>;
+    cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    
+    
+    spidev: icm20608@0{
+        compatible = "invensense,icm20608";
+        interrupt-parent = <&gpio1>;
+        interrupts = <1 1>;
+        spi-max-frequency = <8000000>; 
+        reg = <0>; 
+    };
+};
+
+&sai2 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_sai2>;
+
+    assigned-clocks = <&clks IMX6UL_CLK_SAI2_SEL>,
+              <&clks IMX6UL_CLK_SAI2>;
+    assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>;
+    assigned-clock-rates = <0>, <12288000>;
+
+    status = "okay";
+};
+
+&tsc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_tsc>;
+    xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
+    measure-delay-time = <0xfffff>;
+    pre-charge-time = <0xffff>;
+    status = "okay";
+};
+
+&uart1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart1>;
+    status = "okay";
+};
+&uart3 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart3
+             &pinctrl_485_ctl>;
+    //pinctrl-0 = <&pinctrl_uart3>;
+    //fsl,rs485-gpio-txen = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    //rts-gpio = <&gpio5 0 GPIO_ACTIVE_HIGH>;
+    rs485-rts-active-high;
+    //rs485-rts-active-high;
+        rs485-rx-during-tx;
+        rs485-rts-delay = <100 100>;
+        linux,rs485-enabled-at-boot-time;
+    status = "okay";
+};
+ 
+&uart6 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_uart6>;
+    status = "okay";
+};
+
+
+&usbotg1 {
+    dr_mode = "otg";
+    srp-disable;
+    hnp-disable;
+    adp-disable;
+    status = "okay";
+};
+
+&usbotg2 {
+    dr_mode = "host";
+    disable-over-current;
+    status = "okay";
+};
+
+&usbphy1 {
+    tx-d-cal = <0x5>;
+};
+
+&usbphy2 {
+    tx-d-cal = <0x5>;
+};
+
+&usdhc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_usdhc1>;
+    cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+    keep-power-in-suspend;
+    enable-sdio-wakeup;
+    bus-width = <4>;
+    status = "okay";
+};
+
+&usdhc2 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_usdhc2_8bit>;
+        bus-width = <8>;
+        non-removable;
+        status = "okay";
+};
+
+&wdog1 {
+    status = "okay";
+};
+
+&adc1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_adc1>;
+    num-channels = <5>;
+    vref-supply = <&reg_can_3v3>;
+    status = "okay";
+};
+
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+    
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+    /*   
+    spidev0: spi@0 {
+        compatible = "rohm,dh2228fv";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+    };
+    
+    spidev1: spi@1 {
+        compatible = "rohm,dh2228fv";
+        reg = <1>;
+        spi-max-frequency = <5000000>;
+    };
+    */
+    
+};
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/Makefile

@@ -0,0 +1,12 @@
+
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order
+
+obj-m	+= led_drv.o
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/led_drv.c

@@ -0,0 +1,198 @@
+#include <linux/module.h>
+
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/tty.h>
+#include <linux/kmod.h>
+#include <linux/gfp.h>
+
+#include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
+
+
+#define LED_MAX_CNT 10
+
+struct led_desc {
+	int pin;
+	int minor;
+};
+
+/* 1. 确定主设备号 */ 
+static int major = 0;
+static struct class *led_class;
+
+static int g_ledcnt = 0;
+static struct led_desc leds_desc[LED_MAX_CNT];
+
+
+
+/* 3. 实现对应的open/read/write等函数，填入file_operations结构体                   */
+static ssize_t led_drv_write (struct file *file, const char __user *buf, size_t size, loff_t *offset)
+{
+	int err;
+	char status;
+	struct inode *inode = file_inode(file);
+	int minor = iminor(inode);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	err = copy_from_user(&status, buf, 1);
+
+	/* 根据次设备号和status控制LED */
+	printk("set led pin 0x%x as %d\n", leds_desc[minor].pin, status);
+	
+	return 1;
+}
+
+static int led_drv_open (struct inode *node, struct file *file)
+{
+	int minor = iminor(node);
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* 根据次设备号初始化LED */
+	printk("init led pin 0x%x as output\n", leds_desc[minor].pin);
+	
+	return 0;
+}
+
+
+/* 2. 定义自己的file_operations结构体                                              */
+static struct file_operations led_drv = {
+	.owner	 = THIS_MODULE,
+	.open    = led_drv_open,
+	.write   = led_drv_write,
+};
+
+/* B.1 实现platform_driver的probe函数  */
+static int led_probe(struct platform_device *pdev)
+{	
+	int minor;
+	int i = 0;
+	const char *tmp_str;
+
+	struct resource *res;
+		
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	if (!pdev->dev.of_node)  /* 普通的platform_device */
+	{
+		res = platform_get_resource(pdev, IORESOURCE_IRQ, i++);
+		if (!res)
+			return -EINVAL;
+		minor = g_ledcnt;
+		leds_desc[minor].pin = res->start;
+	}
+	else
+	{
+		of_property_read_string(pdev->dev.of_node, "pin", &tmp_str);
+		printk("pin = %s\n", tmp_str);
+		minor = g_ledcnt;
+		leds_desc[minor].pin = tmp_str[6] - '0';
+	}
+
+	/* 记录引脚 */
+	leds_desc[minor].minor = minor;
+
+	/* 7.2 辅助信息 */
+	/* 创建设备节点 */
+	device_create(led_class, NULL, MKDEV(major, minor), NULL, "100ask_led%d", minor); /* /dev/100ask_led0,1,... */
+	
+	platform_set_drvdata(pdev, &leds_desc[minor]);
+	
+	g_ledcnt++;
+	
+    return 0;
+}
+
+/* B.2 实现platform_driver的remove函数  */
+static int led_remove(struct platform_device *pdev)
+{
+	struct led_desc *led = platform_get_drvdata(pdev);
+
+	device_destroy(led_class, MKDEV(major, led->minor)); /* /dev/100ask_led0,1,... */
+
+    return 0;
+}
+
+static const struct platform_device_id led_id_table[] = {
+	{"100ask_led",   1},
+	{"100ask_led_3", 2},
+	{"100ask_led_4", 3},
+	{ },
+};
+
+static const struct of_device_id dts_device_ids[] = {
+    { .compatible = "100ask,led", },
+    {/* sentinel */}
+};
+
+
+/* A. 实现platform_driver  */
+static struct platform_driver led_driver = {
+    .probe      = led_probe,
+    .remove     = led_remove,
+    .driver     = {
+        .name   = "100ask_led",
+		.of_match_table = dts_device_ids,
+    },
+    .id_table = led_id_table,
+};
+
+
+
+/* 4. 把file_operations结构体告诉内核：注册驱动程序register_chrdev                                */
+/* 5. 谁来注册驱动程序啊？得有一个入口函数：安装驱动程序时，就会去调用这个入口函数 */
+static int __init led_init(void)
+{
+	int err;
+	
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+	major = register_chrdev(0, "100ask_led", &led_drv);  /* /dev/led */
+
+
+	/* 7.1 辅助信息 */
+	led_class = class_create(THIS_MODULE, "100ask_led_class");
+	err = PTR_ERR(led_class);
+	if (IS_ERR(led_class)) {
+		printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+		unregister_chrdev(major, "led");
+		return -1;
+	}
+
+	/* C. 注册platform_driver	*/
+    err = platform_driver_register(&led_driver); 
+    
+    return err;
+}
+
+/* 6. 有入口函数就应该有出口函数：卸载驱动程序时，就会去调用这个出口函数           */
+static void __exit led_exit(void)
+{
+	printk("%s %s line %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	/* C. 反注册platform_driver	*/
+    platform_driver_unregister(&led_driver); 
+
+	class_destroy(led_class);
+	unregister_chrdev(major, "100ask_led");
+}
+
+
+/* 7. 其他完善：提供设备信息，自动创建设备节点                                     */
+
+module_init(led_init);
+module_exit(led_exit);
+
+MODULE_LICENSE("GPL");
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/07_设备树入门/source/07_platform_driver_for_dts/ledtest.c

@@ -0,0 +1,50 @@
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * ./ledtest /dev/100ask_led0 on
+ * ./ledtest /dev/100ask_led0 off
+ */
+int main(int argc, char **argv)
+{
+	int fd;
+	char status;
+	
+	/* 1. 判断参数 */
+	if (argc != 3) 
+	{
+		printf("Usage: %s <dev> <on | off>\n", argv[0]);
+		return -1;
+	}
+
+	/* 2. 打开文件 */
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1)
+	{
+		printf("can not open file %s\n", argv[1]);
+		return -1;
+	}
+
+	/* 3. 写文件 */
+	if (0 == strcmp(argv[2], "on"))
+	{
+		status = 1;
+		write(fd, &status, 1);
+	}
+	else
+	{
+		status = 0;
+		write(fd, &status, 1);
+	}
+	
+	close(fd);
+	
+	return 0;
+}
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/doc_pic/28_SPI设备驱动开发1_OLED屏幕硬件操作.md

@@ -0,0 +1,69 @@
+# SPI设备驱动开发1_OLED屏幕硬件操作
+
+
+
+## 1.  SPI总线设备驱动模型
+
+
+
+![image-20220118192410328](pic/spi/01_spi_bus_dev_drv.png)
+
+
+
+## 2. 分析
+
+![image-20220118204447939](pic/spi/02_device_tree_err.png)
+
+
+
+## 3. 调试DAC驱动
+
+### 3.1 思路
+
+使用逻辑分析仪：发现CS信号没有变化
+
+查看内核调试信息：cat /sys/kernel/debug/gpio, 发现引脚为input：
+
+![image-20220122195532597](pic/spi/03_cs_gpio_input.png)
+
+
+
+在内核SPI控制器驱动中添加打印，发现GPIO 122确实被配置为output：
+
+```c
+static int spi_imx_setup(struct spi_device *spi)
+{
+	int err;
+	
+	dev_dbg(&spi->dev, "%s: mode %d, %u bpw, %d hz\n", __func__,
+		 spi->mode, spi->bits_per_word, spi->max_speed_hz);
+
+	if (gpio_is_valid(spi->cs_gpio))
+	{
+		err =  gpio_direction_output(spi->cs_gpio,
+				      spi->mode & SPI_CS_HIGH ? 0 : 1);
+
+	  printk("%s %s %d, spi->cs_gpio = %d, gpio_direction_output, err = %d\n", __FILE__, __FUNCTION__, __LINE__, spi->cs_gpio, err);
+	}
+
+	spi_imx_chipselect(spi, BITBANG_CS_INACTIVE);
+
+	return 0;
+}
+```
+
+
+
+怀疑：
+
+* 这个驱动的后续代码再次把GPIO配置成立input
+* 其他驱动把GPIO也配置成了input：把spi-imx.ko最后手动加载，发现问题依旧，排除其他驱动的影响。
+
+
+
+解决办法：
+
+![image-20220122202505579](pic/spi/04_fix_code.png)
+
+
+

STM32MP157/source/A7/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/01_oled_template/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+#	$(CROSS_COMPILE)gcc -o at24c02_test at24c02_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order  
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

STM32MP157/source/A7/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/01_oled_template/oled_drv.c

@@ -0,0 +1,58 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+
+static int oled_probe(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+

STM32MP157/source/A7/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/02_oled_write/Makefile

@@ -0,0 +1,28 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+#KERN_DIR =  /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+KERN_DIR =  /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+#	$(CROSS_COMPILE)gcc -o at24c02_test at24c02_test.c
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order  
+
+# 参考内核源码drivers/char/ipmi/Makefile
+# 要想把a.c, b.c编译成ab.ko, 可以这样指定:
+# ab-y := a.o b.o
+# obj-m += ab.o
+
+
+
+obj-m += oled_drv.o
+

STM32MP157/source/A7/11_SPI/01_参考的源码/28_SPI设备驱动开发1_OLED屏幕硬件操作/source/02_oled_write/oled_drv.c

@@ -0,0 +1,109 @@
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/module.h>
+
+struct spi_device *oled_dev;
+
+static int major;
+static struct class *oled_class;
+
+static long oled_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct spi_message msg;
+	struct spi_transfer trans[3];
+
+	trans[0].tx_buf = buf0;
+	trans[0].len    = len0;
+
+	trans[1].rx_buf = buf1;
+	trans[1].len    = len1;
+
+	trans[2].tx_buf = buf2;
+	trans[2].rx_buf = buf3;
+	trans[2].len    = len2;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&trans[0], &msg);
+	spi_message_add_tail(&trans[1], &msg);
+	spi_message_add_tail(&trans[2], &msg);
+	
+	return 0;
+}
+
+/* 定义自己的file_operations结构体                                              */
+static struct file_operations oled_fops = {
+	.owner	 = THIS_MODULE,
+	.unlocked_ioctl = oled_ioctl,
+};
+
+static int oled_probe(struct spi_device *spi)
+{	
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	oled_dev = spi;
+
+	/* register_chrdev */
+	major = register_chrdev(0, "oled", &oled_fops);  
+
+	/* class_create */
+	oled_class = class_create(THIS_MODULE, "oled_class");
+
+	/* device_create */
+	device_create(oled_class, NULL, MKDEV(major, 0), NULL, "myoled");
+	
+	return 0;
+}
+
+static int oled_remove(struct spi_device *spi)
+{
+	printk("%s %s %d\n", __FILE__, __FUNCTION__, __LINE__);
+
+	device_destroy(oled_class, MKDEV(major, 0));
+	class_destroy(oled_class);
+	unregister_chrdev(major, "oled");
+
+	return 0;
+}
+
+//static const struct spi_device_id oled_spi_ids[] = {
+//	{"100ask,oled", },
+//	{}
+//};
+
+static const struct of_device_id oled_of_match[] = {
+	{.compatible = "100ask,oled"},
+	{}
+};
+
+static struct spi_driver oled_driver = {
+	.driver = {
+		.name	= "oled",
+		.of_match_table = oled_of_match,
+	},
+	.probe		= oled_probe,
+	.remove		= oled_remove,
+	//.id_table	= oled_spi_ids,
+};
+
+int oled_init(void)
+{
+	return spi_register_driver(&oled_driver);
+}
+
+static void oled_exit(void)
+{
+	spi_unregister_driver(&oled_driver);
+}
+
+module_init(oled_init);
+module_exit(oled_exit);
+
+MODULE_LICENSE("GPL v2");
+