uboot lcd RGB888

强王 — Wed, 05 Aug 2015 08:44:34 GMT

目前使用hsd070IDW1-E13 LCD RGB888的显示屏，目前UBOOT不显示LOGO，

我把LCD的配置打开，还是不显示LOGO，内核显示一切正常

需要怎么配置

UBOOT:2014.04

Re: uboot lcd RGB888

joanxie — Fri, 07 Aug 2015 06:38:29 GMT

could you share your setting code? or you can refer to the code as below, this setting is for mx53, you can refer to it.

According to the datasheet of HSD070IDW1-A20 , video mode should be :

struct fb_videomode {

name = “HSD-WVGA”;

refresh = 30000000/(928*525)=62 ;

xres = 800;

yres = 480;

pixclock = 1/30000000 * 10e12 =33333 ;

left_margin = 40;

right_margin = 40;

upper_margin = 29;

lower_margin; = 13

hsync_len = 48 ;

vsync_len = 3;

sync = FB_SYNC_CLK_LAT_FALL ;

vmode = FB_VMODE_NONINTERLACED ;

flag = 0;

};

So the video mode for new LCD is :

struct fb_videomode video_modes {

/* 800x480 @ 62 Hz , pixel clk @ 30MHz */

“HSD-WVGA”, 62, 800, 480, 33333, 40,40,29,13,48,3,

FB_SYNC_CLK_LAT_FALL,

FB_VMODE_NONINTERLACED,

};

static struct mxc_fb_platform_data fb_data[] = {

{

.interface_pix_fmt = IPU_PIX_FMT_RGB24,

.mode_str = "HSD-WVGA",

.mode = video_modes,

.num_modes = ARRAY_SIZE(video_modes),

};