LCD 引腳配置：
lcd_pins_default: lcd_pins_default {
pinctrl-single,pins = <
AM33XX_IOPAD(0x820, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad8.lcd_data23 */
AM33XX_IOPAD(0x824, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad9.lcd_data22 */
AM33XX_IOPAD(0x828, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad10.lcd_data21 */
AM33XX_IOPAD(0x82c, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad11.lcd_data20 */
AM33XX_IOPAD(0x830, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad12.lcd_data19 */
AM33XX_IOPAD(0x834, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad13.lcd_data18 */
AM33XX_IOPAD(0x838, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad14.lcd_data17 */
AM33XX_IOPAD(0x83c, PIN_OUTPUT | MUX_MODE1) /* gpmc_ad15.lcd_data16 */
AM33XX_IOPAD(0x8a0, PIN_OUTPUT | MUX_MODE0) /* lcd_data0.lcd_data0 */
AM33XX_IOPAD(0x8a4, PIN_OUTPUT | MUX_MODE0) /* lcd_data1.lcd_data1 */
AM33XX_IOPAD(0x8a8, PIN_OUTPUT | MUX_MODE0) /* lcd_data2.lcd_data2 */
AM33XX_IOPAD(0x8ac, PIN_OUTPUT | MUX_MODE0) /* lcd_data3.lcd_data3 */
AM33XX_IOPAD(0x8b0, PIN_OUTPUT | MUX_MODE0) /* lcd_data4.lcd_data4 */
AM33XX_IOPAD(0x8b4, PIN_OUTPUT | MUX_MODE0) /* lcd_data5.lcd_data5 */
AM33XX_IOPAD(0x8b8, PIN_OUTPUT | MUX_MODE0) /* lcd_data6.lcd_data6 */
AM33XX_IOPAD(0x8bc, PIN_OUTPUT | MUX_MODE0) /* lcd_data7.lcd_data7 */
AM33XX_IOPAD(0x8c0, PIN_OUTPUT | MUX_MODE0) /* lcd_data8.lcd_data8 */
AM33XX_IOPAD(0x8c4, PIN_OUTPUT | MUX_MODE0) /* lcd_data9.lcd_data9 */
AM33XX_IOPAD(0x8c8, PIN_OUTPUT | MUX_MODE0) /* lcd_data10.lcd_data10 */
AM33XX_IOPAD(0x8cc, PIN_OUTPUT | MUX_MODE0) /* lcd_data11.lcd_data11 */
AM33XX_IOPAD(0x8d0, PIN_OUTPUT | MUX_MODE0) /* lcd_data12.lcd_data12 */
AM33XX_IOPAD(0x8d4, PIN_OUTPUT | MUX_MODE0) /* lcd_data13.lcd_data13 */
AM33XX_IOPAD(0x8d8, PIN_OUTPUT | MUX_MODE0) /* lcd_data14.lcd_data14 */
AM33XX_IOPAD(0x8dc, PIN_OUTPUT | MUX_MODE0) /* lcd_data15.lcd_data15 */
AM33XX_IOPAD(0x8e0, PIN_OUTPUT | MUX_MODE0) /* lcd_vsync.lcd_vsync */
AM33XX_IOPAD(0x8e4, PIN_OUTPUT | MUX_MODE0) /* lcd_hsync.lcd_hsync */
AM33XX_IOPAD(0x8e8, PIN_OUTPUT | MUX_MODE0) /* lcd_pclk.lcd_pclk */
AM33XX_IOPAD(0x8ec, PIN_OUTPUT | MUX_MODE0) /* lcd_ac_bias_en.lcd_ac_bias_en */
AM33XX_IOPAD(0x9e4, MUX_MODE7|PIN_OUTPUT_PULLUP) /* GPIO3_7 to set LCD BACKLIGHT EN 背光使能 */
AM33XX_IOPAD(0x89c, MUX_MODE7|PIN_OUTPUT) //gpmc_ben0_cle.gpio2_5 >; };

LCD控制配置：
1. LCD供電3.3v/5v
2. 背光使能
3. PWM控制，調節LCD亮度

PWM配置：
修改config檔案或者make menuconfig 開啟dmtimer控制開關，使用timer7 產生PWM 時鐘32k。

pwm7:[email protected]{
compatible=”ti,omap-dmtimer-pwm”;
ti,timers=<&timer7>;
#pwm-cells=<3>;
pinctrl-names=”default”;
pinctrl-0=<&ecap0_pins>;
//ti,prescaler=<3>;
};

背光控制和使能：
lcd_bl: backlight {
compatible = “pwm-backlight”;
pwms = <&pwm7 0 720000 0>;//調節pwms，產生一個2k左右的pwm
//pwms = <&pwm7 0 600 0>;
brightness-levels = <0 8 16 32 64 96 128 180 255>;
default-brightness-level = <8>;
enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;//使能
};
LCD控制：
panel {
compatible = “ti,tilcdc,panel”;
pinctrl-names = “default”;
pinctrl-0 = <&lcd_pins_default>;
backlight = <&lcd_bl>;
enable-gpios = <&gpio3 7 1>;//使能
status = “okay”;
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
sync-edge = <0>;
sync-ctrl = <1>;
raster-order = <0>;
fifo-th = <0>;
//invert-pxl-clk=<1>; //是否翻轉
};
display-timings {
800*600 {
hactive = <800>; //<480>;
vactive = <600>; //<272>;
hback-porch = <40>; //<43>;
hfront-porch =<40>; //<8>;
hsync-len = <48>; //<4>;
vback-porch = <36>; //<12>;
vfront-porch = <21>; //<4>;
vsync-len = <2>; //<10>;
clock-frequency =<70000000>; //<9000000>; //設定時鐘
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active =<1>; //<1>;
};
};
};
};