1.入行嵌入式不久，也是第一次碰到hdmi需要配置才能显示的这种情况，是网友们给了我很大的帮助。

2.\kernel\arch\arm\boot\dts\lcd-b101ew05.dtsi  （名字自己定义，我懒得改了）


/*
 * RockChip. LCD_B101ew05
 *
 */

/ {

		disp_timings: display-timings {
                        native-mode = <&timing0>;
                        timing0: timing0 {
				screen-type = <SCREEN_HDMI>;
//				lvds-format = <LVDS_8BIT_2>;
				out-face    = <OUT_P888>;
				color-mode = <COLOR_YCBCR>;
				clock-frequency = <71000000>;
				hactive = <1280>;
				vactive = <720>;
				hback-porch = <100>;
				hfront-porch = <18>;
				vback-porch = <8>;
				vfront-porch = <6>;
				hsync-len = <10>;
				vsync-len = <2>;
				hsync-active = <0>;
				vsync-active = <0>;
				de-active = <0>;
				pixelclk-active = <0>;
				swap-rb = <0>;
				swap-rg = <0>;
				swap-gb = <0>;
				
			};
		};
};

3.\kernel\arch\arm\boot\dts\rk3128-sdk.dts

#include "lcd-b101ew05.dtsi"

&rk_screen {
	display-timings = <&disp_timings>;
};

&lcdc {
	status = "okay";
}

&hdmi {
         status = "okay";    		
};	


&fb {
		status = "okay";
	 rockchip,disp-mode = <NO_DUAL>;		
	 rockchip,uboot-logo-off = <1>;
};

&pwm0 {
        status = "okay";
};