各位大神好， 我想要点亮一块dual lvds的屏， 于是参照了wiki和版主zhansb在 [b]http://developer.t-firefly.com/thread-945-1-1.html[/b] 里面的回复。我去查了一下kernel/arch/arm/boot/dts下的驱动树 firefly-rk3288-reload.dts文件，它include了lcd-box.dtsi文件，于是我就将这个文件修改如下：
<p><p><div class="blockcode">
/ {
disp_power_ctr: power_ctr {
/* rockchip,debug = <0>;
lcd_en:lcd_en {
rockchip,power_type = <GPIO>;
gpios = <&gpio0 GPIO_B0 GPIO_ACTIVE_HIGH>;
rockchip,delay = <10>;
};
bl_en:bl_en {
rockchip,power_type = <GPIO>;
gpios = <&gpio0 GPIO_A2 GPIO_ACTIVE_HIGH>;
rockchip,delay = <10>;
};
bl_ctr:bl_ctr {
rockchip,power_type = <GPIO>;
gpios = <&gpio3 GPIO_D6 GPIO_ACTIVE_HIGH>;
rockchip,delay = <10>;
};
lcd_rst:lcd_rst {
rockchip,power_type = <REGULATOR>;
rockchip,delay = <5>;
};*/
};
disp_timings: display-timings {
native-mode = <&timing0>;
timing0: timing0 {
screen-type = <SCREEN_DUAL_LVDS>;
out-face = <OUT_P888>;
clock-frequency = <74250000>;
color-mode=<COLOR_RGB>;
hactive = <1920>;
vactive = <1200>;
hback-porch = <220>;
hfront-porch = <110>;
vback-porch = <20>;
vfront-porch = <5>;
hsync-len = <40>;
vsync-len = <5>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
};
timing1: timing1 {
screen-type = <SCREEN_RGB>;
out-face = <OUT_P888>;
clock-frequency = <148500000>;
hactive = <1920>;
vactive = <1080>;
hback-porch = <148>;
hfront-porch = <88>;
vback-porch = <36>;
vfront-porch = <4>;
hsync-len = <44>;
vsync-len = <5>;
hsync-active = <1>;
vsync-active = <1>;
de-active = <0>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
};
timing2: timing2 {
screen-type = <SCREEN_RGB>;
out-face = <OUT_P888>;
clock-frequency = <297000000>;
hactive = <3840>;
vactive = <2160>;
hback-porch = <296>;
hfront-porch = <176>;
vback-porch = <72>;
vfront-porch = <8>;
hsync-len = <88>;
vsync-len = <10>;
hsync-active = <1>;
vsync-active = <1>;
de-active = <0>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
};
};
};
</div></p></p>
代码中关于timing0的设置是按照屏幕的规格书设置的，然后我按照wiki android 5.1 里面解释的重新编译后把kernel.img和resource.img烧写进去，但是屏幕一直是黑的，后来我又修改了几次同一个文件， 然后发现重新编译之后的镜像与先前没有区别，我怀疑在编译的过程中 并没有把这些修改编译进去， 请问我是不是还忘了修改哪个文件或者忽略了哪个步骤呢？？？求大神们解答！！！感谢！！！