# 驱动编写 该章节请参考【20.lcd】工程 ## 修改设备树 自带的设备树关于fb的总共有两个文件`arch\arm\boot\dts\`目录下`imx6ull.dtsi`和`imx6ull-14x14-evk.dts`，我们只需修改`imx6ull-14x14-evk.dts`即可。 如果不想破坏原有的设备树文件可以拷贝一份`arch\arm\boot\dts\`目录下的`imx6ull-14x14-evk.dts`重新命名例如：`imx6ull-14x14-xym.dts`，然后修改`arch\arm\boot\dts\Makefile`文件，新增自己的设备树文件即可，如下：这样在make dtbs的时候就会生成`imx6ull-14x14-xym.dtb`文件。 ![](media/image-20210913192345169.png) 现在我们修改设备树如下步骤： 1. `arch\arm\boot\dts\imx6ull.dtsi`：这里不做修改，说明如下： ![](media/image-20210913190416530.png) 2. `arch\arm\boot\dts\imx6ull-14x14-evk.dts`：禁能自带的lcdif和背光PWM，需要修改的地方如下： ![](media/image-20210913190651839.png) ![](media/image-20210913190845542.png) 3. LCD 引脚和背光：需要修改的地方如下 ![image-20210913191403400](media/image-20210913191403400.png) 4. 新增自己的fb节点如下：在根节点下添加如下： ![](media/image-20210913192100803.png) 添加好后完整文件如下： ``` /* * 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 #include "imx6ull.dtsi" / { model = "Freescale i.MX6 ULL 14x14 EVK Board"; compatible = "fsl,imx6ull-14x14-evk", "fsl,imx6ull"; 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 5000000>; brightness-levels = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100>; default-brightness-level = <50>; status = "okay"; }; framebuffer-mylcd { compatible = "flyrobot,lcd_drv"; // 设备树节点名字 reg = <0x021c8000 0x4000>; // 基地值 pinctrl-names = "default"; pinctrl-0 = <&pinctrl_lcdif_dat // 使用pinctrl设置数据线控制线和背光的gpio属性 &pinctrl_lcdif_ctrl &pinctrl_backlight>; backlight-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;// 默认打开背光 clocks = <&clks IMX6UL_CLK_LCDIF_PIX>, // LCD控制器所需的时钟，这里使用时钟子系统进行控制，pix和axi <&clks IMX6UL_CLK_LCDIF_APB>; clock-names = "pix", "axi"; display = <&displayA>; status = "okay"; displayA: display@A { bits-per-pixel = <32>; // 一个像素多少个bit 这里使用888 模式一共32bit bus-width = <24>; // 数据线宽度，这里我们硬件上使用了24根数据线 display-timings { native-mode = <&timingA>; timingA: timing0_800x480 { mode_name = "TFT50AB"; clock-frequency = <50000000>;// 像素时钟 hactive = <800>; vactive = <480>; hfront-porch = <22>; // 行前肩 hback-porch = <46>; // 行后肩 hsync-len = <20>; // 行脉宽 vback-porch = <23>; // 场后肩 vfront-porch = <22>; // 场前肩 vsync-len = <3>; // 场脉宽 hsync-active = <0>; // 行数据线有效极性 vsync-active = <0>; // 场数据线有效极性 de-active = <1>; // de数据线有效极性 pixelclk-active = <0>; // 时钟数据线有效极性 }; }; }; }; 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>; /*gpios = <&gpio_spi 3 GPIO_ACTIVE_LOW>;*/ }; reg_wifi_vmmc: regulator@1 { compatible = "regulator-fixed"; regulator-name = "WIFI_3V3"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>; enable-active-high; }; reg_vref_3v3: regulator@2 { compatible = "regulator-fixed"; regulator-name = "vref-3v3"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; }; /* reg_gpio_dvfs: regulator-gpio { compatible = "regulator-gpio"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_dvfs>; regulator-min-microvolt = <1300000>; regulator-max-microvolt = <1400000>; regulator-name = "gpio_dvfs"; regulator-type = "voltage"; gpios = <&gpio5 3 GPIO_ACTIVE_HIGH>; states = <1300000 0x1 1400000 0x0>; }; reg_bt: regulator-bt-reg { compatible = "regulator-gpio"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_dvfs>; regulator-min-microvolt = <1300000>; regulator-max-microvolt = <1400000>; regulator-name = "gpio_dvfs"; regulator-type = "voltage"; gpios = <&gpio5 3 GPIO_ACTIVE_HIGH>; states = <1300000 0x1 1400000 0x0>; };*/ }; /****************************************修改的地�?***************************************************/ /* leds { compatible = "gpio-leds"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_led>; led0: cpu { label = "cpu"; gpios = <&gpio5 3 GPIO_ACTIVE_LOW>; default-state = "on"; linux,default-trigger = "heartbeat"; }; }; */ xym_led { compatible = "xym-led"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_led>; led-gpio = <&gpio5 3 GPIO_ACTIVE_LOW>; }; /****************************************修改的地�?***************************************************/ pwm_leds{ compatible = "pwm-leds"; status = "okay"; red { label = "red"; active-low; pwms = <&pwm3 0 5000>; max-brightness = <255>; }; blue { label = "blue"; active-low; pwms = <&pwm7 0 5000>; max-brightness = <255>; }; green { label = "green"; active-low; pwms = <&pwm8 0 5000>; max-brightness = <255>; }; }; ir_recv:ir-receiver { compatible = "gpio-ir-receiver"; #gpio-cells = <1>; gpios = <&gpio1 21 GPIO_ACTIVE_LOW>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_remote_control>; linux,rc-map-name = "rc-lirc"; status = "okay"; }; gpio-keys { compatible = "gpio-keys"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpio_keys>; Key0{ label = "Key 0"; gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>; linux,code = ; }; }; 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 = ; * hp-det-pin: JD1 JD2 or JD3 * hp-det-polarity = 0: hp detect high for headphone * hp-det-polarity = 1: hp detect high for speaker */ hp-det = <3 1>; /*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 = <100000>; }; }; sound-spdif { compatible = "fsl,imx-audio-spdif"; model = "imx-spdif"; spdif-controller = <&spdif>; spdif-in; spdif-out; }; sii902x_reset: sii902x-reset { compatible = "gpio-reset"; reset-gpios = <&gpio_spi 0 GPIO_ACTIVE_LOW>; reset-delay-us = <100000>; #reset-cells = <0>; }; ds18b20{ compatible = "w1-gpio"; gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>; linux,open-drain; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_onewire>; status = "disable"; }; dht11{ compatible = "dht11"; gpios = <&gpio1 2 GPIO_ACTIVE_LOW>; linux,open-drain; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_onewire>; status = "okay"; }; }; &cpu0 { arm-supply = <®_arm>; soc-supply = <®_soc>; clock-frequency = <800000000>; /*dc-supply = <®_gpio_dvfs>;*/ }; &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 = <ðphy0>; status = "okay"; }; &fec2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet2>; phy-mode = "rmii"; phy-handle = <ðphy1>; status = "okay"; mdio { #address-cells = <1>; #size-cells = <0>; ethphy0: ethernet-phy@2 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <2>; }; ethphy1: ethernet-phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <1>; }; }; }; &flexcan1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_flexcan1>; /*xceiver-supply = <®_can_3v3>;*/ status = "okay"; }; /* &flexcan2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_flexcan2>; /*xceiver-supply = <®_can_3v3>; status = "okay"; /*can & UART2 can not use as same time };*/ &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"; mpu6050@68 { compatible = "mpu6050,INV_MPU6050"; reg = <0x68>; position = <1>; }; gt9xx@5d { compatible = "goodix,gt9xx"; reg = <0x5d>; status = "okay"; interrupt-parent = <&gpio5>; interrupts = <9 IRQ_TYPE_EDGE_FALLING>; pinctrl-names = "pinctrl_tsc_reset","pinctrl_tsc_irq"; pinctrl-0 = <&pinctrl_tsc_reset>; 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 = <&gpio3 4 GPIO_ACTIVE_LOW>; irq-gpios = <&gpio5 9 IRQ_TYPE_EDGE_FALLING>; irq-flags = <2>; /*1:rising 2: falling*/ touchscreen-max-id = <1>; 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 = <1>; 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 = [ 00 20 03 E0 01 05 0D 00 01 08 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 02 02 2D 00 00 00 00 00 03 64 32 00 00 00 28 64 94 C5 02 07 00 00 04 9C 2C 00 8F 34 00 84 3F 00 7C 4C 00 77 5B 00 77 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 24 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 ]; }; /* mag3110@0e { compatible = "fsl,mag3110"; reg = <0x0e>; position = <2>; }; fxls8471@1e { compatible = "fsl,fxls8471"; reg = <0x1e>; position = <0>; interrupt-parent = <&gpio5>; interrupts = <0 8>; };*/ }; &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 ="1360x768M@60"; bits-per-pixel = <16>; reg = <0x39>; status = "okay"; /* HDMI 使能 */ }; ov5640: ov5640@3c { compatible = "ovti,ov5640"; reg = <0x3c>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_csi1>; clocks = <&clks IMX6UL_CLK_CSI>; clock-names = "csi_mclk"; pwn-gpios = <&gpio_spi 6 1>; rst-gpios = <&gpio_spi 5 0>; csi_id = <0>; mclk = <24000000>; mclk_source = <0>; status = "disable"; /* 摄像头使�?*/ port { ov5640_ep: endpoint { remote-endpoint = <&csi1_ep>; }; }; }; }; &csi { status = "disable"; /* 摄像头总线使能 */ port { csi1_ep: endpoint { remote-endpoint = <&ov5640_ep>; }; }; }; &iomuxc { pinctrl-names = "default"; imx6ul-evk { pinctrl_gpmi_nand: gpmi-nand { fsl,pins = < MX6UL_PAD_NAND_CLE__RAWNAND_CLE 0xb0b1 MX6UL_PAD_NAND_ALE__RAWNAND_ALE 0xb0b1 MX6UL_PAD_NAND_WP_B__RAWNAND_WP_B 0xb0b1 MX6UL_PAD_NAND_READY_B__RAWNAND_READY_B 0xb000 MX6UL_PAD_NAND_CE0_B__RAWNAND_CE0_B 0xb0b1 MX6UL_PAD_NAND_CE1_B__RAWNAND_CE1_B 0xb0b1 MX6UL_PAD_NAND_RE_B__RAWNAND_RE_B 0xb0b1 MX6UL_PAD_NAND_WE_B__RAWNAND_WE_B 0xb0b1 MX6UL_PAD_NAND_DATA00__RAWNAND_DATA00 0xb0b1 MX6UL_PAD_NAND_DATA01__RAWNAND_DATA01 0xb0b1 MX6UL_PAD_NAND_DATA02__RAWNAND_DATA02 0xb0b1 MX6UL_PAD_NAND_DATA03__RAWNAND_DATA03 0xb0b1 MX6UL_PAD_NAND_DATA04__RAWNAND_DATA04 0xb0b1 MX6UL_PAD_NAND_DATA05__RAWNAND_DATA05 0xb0b1 MX6UL_PAD_NAND_DATA06__RAWNAND_DATA06 0xb0b1 MX6UL_PAD_NAND_DATA07__RAWNAND_DATA07 0xb0b1 >; }; pinctrl_remote_control: remote_control { fsl,pins = < MX6UL_PAD_UART2_RX_DATA__GPIO1_IO21 0x000010B1 /* remote control add by pengjie 20190703*/ >; }; pinctrl_csi1: csi1grp { fsl,pins = < MX6UL_PAD_CSI_MCLK__CSI_MCLK 0x1b088 MX6UL_PAD_CSI_PIXCLK__CSI_PIXCLK 0x1b088 MX6UL_PAD_CSI_VSYNC__CSI_VSYNC 0x1b088 MX6UL_PAD_CSI_HSYNC__CSI_HSYNC 0x1b088 MX6UL_PAD_CSI_DATA00__CSI_DATA02 0x1b088 MX6UL_PAD_CSI_DATA01__CSI_DATA03 0x1b088 MX6UL_PAD_CSI_DATA02__CSI_DATA04 0x1b088 MX6UL_PAD_CSI_DATA03__CSI_DATA05 0x1b088 MX6UL_PAD_CSI_DATA04__CSI_DATA06 0x1b088 MX6UL_PAD_CSI_DATA05__CSI_DATA07 0x1b088 MX6UL_PAD_CSI_DATA06__CSI_DATA08 0x1b088 MX6UL_PAD_CSI_DATA07__CSI_DATA09 0x1b088 >; }; pinctrl_enet1: enet1grp { fsl,pins = < 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_enet2: enet2grp { fsl,pins = < MX6UL_PAD_GPIO1_IO07__ENET2_MDC 0x1b0b0 MX6UL_PAD_GPIO1_IO06__ENET2_MDIO 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 >; }; pinctrl_flexcan1: flexcan1grp{ fsl,pins = < MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX 0x1b020 MX6UL_PAD_UART3_CTS_B__FLEXCAN1_TX 0x1b020 >; }; pinctrl_flexcan2: flexcan2grp{ fsl,pins = < MX6UL_PAD_UART2_RTS_B__FLEXCAN2_RX 0x1b020 MX6UL_PAD_UART2_CTS_B__FLEXCAN2_TX 0x1b020 >; }; 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_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_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_backlight: blgrp{ fsl,pins = < MX6UL_PAD_GPIO1_IO08__GPIO1_IO08 0x000010B0 // 新增自己的背光控制引脚 >; }; pinctrl_pwm1: pwm1grp { fsl,pins = < MX6UL_PAD_GPIO1_IO08__PWM1_OUT 0x000010B1 >; }; pinctrl_pwm3: pwm3grp { fsl,pins = < MX6UL_PAD_GPIO1_IO04__PWM3_OUT 0x000010B1 >; }; pinctrl_pwm7: pwm7grp { fsl,pins = < MX6UL_PAD_CSI_VSYNC__PWM7_OUT 0x000010B1 >; }; pinctrl_pwm8: pwm8grp { fsl,pins = < MX6UL_PAD_CSI_HSYNC__PWM8_OUT 0x000010B1 >; }; pinctrl_qspi: qspigrp { fsl,pins = < MX6UL_PAD_NAND_WP_B__QSPI_A_SCLK 0x70a1 MX6UL_PAD_NAND_READY_B__QSPI_A_DATA00 0x70a1 MX6UL_PAD_NAND_CE0_B__QSPI_A_DATA01 0x70a1 MX6UL_PAD_NAND_CE1_B__QSPI_A_DATA02 0x70a1 MX6UL_PAD_NAND_CLE__QSPI_A_DATA03 0x70a1 MX6UL_PAD_NAND_DQS__QSPI_A_SS0_B 0x70a1 >; }; 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_spdif: spdifgrp { fsl,pins = < MX6UL_PAD_JTAG_MOD__SPDIF_OUT 0x1b0b0 MX6UL_PAD_GPIO1_IO09__SPDIF_IN 0x1b0b0 >; }; pinctrl_uart1: uart1grp { fsl,pins = < MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1 MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1 >; }; pinctrl_uart2: uart2grp { fsl,pins = < MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX 0x1b0b1 MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX 0x1b0b1 >; }; pinctrl_uart3: uart3grp { fsl,pins = < MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX 0x1b0b1 MX6UL_PAD_UART3_RX_DATA__UART3_DCE_RX 0x1b0b1 >; }; pinctrl_uart2dte: uart2dtegrp { fsl,pins = < MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX 0x1b0b1 MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX 0x1b0b1 /*MX6UL_PAD_UART3_RX_DATA__UART2_DCE_RTS 0x1b0b1 MX6UL_PAD_UART3_TX_DATA__UART2_DCE_CTS 0x1b0b1 pengjie 20190622*/ MX6UL_PAD_UART2_CTS_B__UART2_DCE_CTS 0x1b0b1 MX6UL_PAD_UART2_RTS_B__UART2_DCE_RTS 0x1b0b1 >; }; pinctrl_485: 485grp { fsl,pins = < MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX 0x1b0b1 MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX 0x1b0b1 MX6UL_PAD_UART2_CTS_B__UART2_DCE_CTS 0x1b0b1 /* RS485 RE/DE */ >; }; 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_tsc_reset: tscresetgrp { fsl,pins = < /* used for tsc reset */ MX6UL_PAD_LCD_RESET__GPIO3_IO04 0x05 >; }; pinctrl_onewire: onewire { fsl,pins = < //MX6UL_PAD_GPIO1_IO02__GPIO1_IO02 0x000090B1 DHT11 MX6UL_PAD_GPIO1_IO02__GPIO1_IO02 0x400138B1 >; }; pinctrl_sii902x: hdmigrp { fsl,pins = < MX6UL_PAD_UART1_CTS_B__GPIO1_IO18 0x59 >; }; pinctrl_adc1: adc1grp{ fsl,pins = < MX6UL_PAD_GPIO1_IO03__GPIO1_IO03 0x000010B1 >; }; /* pinctrl_beep: beepgrp{ fsl,pins = < MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x000050B1 >; }; */ }; }; &iomuxc_snvs { pinctrl-names = "default_snvs"; pinctrl-0 = <&pinctrl_tsc_irq>; imx6ul-evk { /* MPU6050 intterrupt*/ pinctrl_hog_2: hoggrp-2 { fsl,pins = < MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00 0x80000000 >; }; /* pinctrl_dvfs: dvfsgrp { fsl,pins = < MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03 0x79 >; }; */ pinctrl_gpio_keys: keysgrp{ fsl,pins = < MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01 0x000110A1 >; }; 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_led: ledgrp { fsl,pins = < MX6ULL_PAD_SNVS_TAMPER3__GPIO5_IO03 0x1b0b0 >; }; pinctrl_sai2_hp_det_b: sai2_hp_det_grp { fsl,pins = < MX6ULL_PAD_SNVS_TAMPER4__GPIO5_IO04 0x000110A1 >; }; pinctrl_tsc_irq: tsc_irq { fsl,pins = < MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09 0x4001b8b0 >; }; }; }; &lcdif { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_lcdif_dat &pinctrl_lcdif_ctrl>; display = <&display0>; status = "disable"; // 这里先禁能 display0: display@0 { bits-per-pixel = <16>; bus-width = <24>; display-timings { native-mode = <&timing0>; timing0: timing0 { mode_name = "TFT50AB"; clock-frequency = <27000000>; hactive = <800>; vactive = <480>; hfront-porch = <23>; hback-porch = <46>; hsync-len = <1>; vback-porch = <22>; vfront-porch = <22>; vsync-len = <1>; hsync-active = <0>; vsync-active = <0>; de-active = <1>; pixelclk-active = <0>; }; }; }; }; &pwm1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm1>; status = "disabled"; // fix okay->disabled }; &pwm3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm3>; status = "okay"; }; &pwm7 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm7>; status = "okay"; }; &pwm8 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm8>; status = "okay"; }; &pxp { status = "okay"; }; /* &qspi { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_qspi>; status = "okay"; ddrsmp=<0>; flash0: n25q256a@0 { #address-cells = <1>; #size-cells = <1>; compatible = "micron,n25q256a"; spi-max-frequency = <29000000>; spi-nor,ddr-quad-read-dummy = <6>; reg = <0>; }; }; */ &sai2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai2>; /*&pinctrl_sai2_hp_det_b>;*/ 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"; }; &uart1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart1>; status = "okay"; }; /* &uart2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart2>; /*fsl,uart-has-rtscts; /* for DTE mode, add below change /* fsl,dte-mode; /*pinctrl-0 = <&pinctrl_uart2dte>; status = "disable"; };*/ &uart2{ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_485>; fsl,rs485-gpio-txen = <&gpio1 31 GPIO_ACTIVE_HIGH>; linux,rs485-enabled-at-boot-time; status = "disable"; }; &uart3{ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart3>; 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", "state_100mhz", "state_200mhz"; pinctrl-0 = <&pinctrl_usdhc1>; pinctrl-1 = <&pinctrl_usdhc1_100mhz>; pinctrl-2 = <&pinctrl_usdhc1_200mhz>; /*cd-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;*/ keep-power-in-suspend; enable-sdio-wakeup; vmmc-supply = <®_wifi_vmmc>; status = "okay"; }; &usdhc2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usdhc2>; non-removable; status = "disable"; }; &gpmi { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpmi_nand>; status = "okay"; nand-on-flash-bbt; }; /* &wdog1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_wdog>; fsl,wdog_b; }; */ &spdif { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_spdif>; assigned-clocks = <&clks IMX6UL_CLK_SPDIF_SEL>, <&clks IMX6UL_CLK_SPDIF_PODF>; assigned-clock-parents = <&clks IMX6UL_CLK_PLL4_AUDIO_DIV>; assigned-clock-rates = <0>, <49152000>; status = "okay"; }; &adc1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_adc1>; vref-supply = <®_vref_3v3>; num-channels = <4>; //此参数为ADC的个�? status = "okay"; }; &gpt2 { status = "okay"; }; ``` ## 新增驱动文件 1. 屏蔽掉以前的设备驱动，新增自己的：修改文件`drivers\video\fbdev\Makefile`如下： ![](media/image-20210913193636045.png) 2. 新增文件`drivers\video\fbdev\imx6ull_fb.c`：内如如下： ```c #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include