一、基础的硬件配置

1.1 LCD背光需要重新配置uboot

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在licheepi的uboot里面有相关配置：
路径：u-boot-3s-current/configs/LicheePi_Zero_800x480LCD_defconfig

CONFIG_ARM=y
CONFIG_ARCH_SUNXI=y
# CONFIG_ARMV7_NONSEC is not set
CONFIG_MACH_SUN8I_V3S=y
CONFIG_DRAM_CLK=360
CONFIG_DRAM_ZQ=14779
CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:40,up:31,lo:13,hs:1,vs:1,sync:3,vmode:0"
CONFIG_VIDEO_LED_BL_EN="PB4"
CONFIG_VIDEO_LCD_BL_PWM="PB2"
# CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW is not set
CONFIG_DEFAULT_DEVICE_TREE="sun8i-v3s-licheepi-zero"
# CONFIG_CONSOLE_MUX is not set
CONFIG_SPL=y
CONFIG_CMD_BOOTMENU=y
# CONFIG_CMD_IMLS is not set
CONFIG_CMD_MEMINFO=y
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
# CONFIG_NETDEVICES is not set
CONFIG_OF_LIBFDT_OVERLAY=y

1.2 V3s添加电容屏

参考：https://whycan.com/t_5487.html

注释NS2009（电阻屏触摸芯片）相关的设备树代码

目录：arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts

/*&i2c0 {
        status = "okay";

        ns2009: ns2009@48 {
                compatible = "nsiway,ns2009";
                reg = <0x48>;
        };
};*/

添加电容屏设备树

目录：arch/arm/boot/dts/sun8i-v3s-licheepi-zero-dock.dts

&i2c0 {
        status = "okay";
        gt911: touchscreen@14 {
        compatible = "goodix,gt911";
        reg = <0x14>;
        interrupt-parent = <&pio>;
        interrupts = <1 1 IRQ_TYPE_EDGE_FALLING>; /* (PB1) */
        pinctrl-names = "default";
        irq-gpios = <&pio 1 1 GPIO_ACTIVE_HIGH>; /* (PB1) */
        reset-gpios = <&pio 1 0 GPIO_ACTIVE_HIGH>; /* RST (PB0) */
        /* touchscreen-swapped-x-y */
    };
};

内核配置

取消ns2009
增加电容芯片GT911

make ARCH=arm menuconfig

Device Drivers > Input device support > Touchscreens
在这里插入图片描述
出了点问题！

[    0.951811] i2c /dev entries driver
[    0.956638] Goodix-TS 0-005d: 0-005d supply AVDD28 not found, using dummy regulator
[    0.964570] Goodix-TS 0-005d: 0-005d supply VDDIO not found, using dummy regulator
[    1.090309] Goodix-TS 0-005d: ID 911, version: 1060
[    1.096034] Goodix-TS 0-005d: Direct firmware load for goodix_911_cfg.bin failed with error -2