24bit LVDS display looks like wrong color depth on imx6DL AI PDK

hyun-moyang — Fri, 12 Sep 2014 05:49:08 GMT

I have a 24bit LVDS display that I am running on PDK imx6dl AI board.

The images look like they are being displayed at the wrong color depth.

I have modified drivers/video/mxc/ldb.c to add a new entry for my

display:

static struct fb_videomode ldb_modedb[] = {

{

"LDB-XGA", 60, 1024, 768, 15385,

220, 40,

21, 7,

60, 10,

FB_SYNC_CLK_LAT_FALL,

FB_VMODE_NONINTERLACED,

FB_MODE_IS_DETAILED,},

}

I also modified my kernel board file to add a matching entry and made

sure to specify IPU_PIX_FMT_RGB24

static struct ipuv3_fb_platform_data qmx6_fb_data[] = {

{ /*fb0*/

.disp_dev = "ldb",

.interface_pix_fmt = IPU_PIX_FMT_RGB24,

.mode_str = "LDB-XGA",

.default_bpp = 24,

.int_clk = false,

{

.disp_dev = "ldb",

.interface_pix_fmt = IPU_PIX_FMT_RGB24,

.mode_str = "LDB-XGA",

.default_bpp = 24,

.int_clk = false,

{

.disp_dev = "lcd",

.interface_pix_fmt = IPU_PIX_FMT_RGB24,

.mode_str = "CLAA-WVGA",

.default_bpp = 24,

.int_clk = false,

}

Is there something else I need to setup in kernel in order to get a 24bit

LVDS panel working?

Re: 24bit LVDS display looks like wrong color depth on imx6DL AI PDK

igorpadykov — Fri, 12 Sep 2014 09:52:17 GMT

Hi Hyun-mo

you can look below

https://community.freescale.com/docs/DOC-93617

and check that you changed parameter

if=RGB666′ to ‘if=RGB24′ on the kernel command-line

Best regards

igor

topic 24bit LVDS display looks like wrong color depth on imx6DL AI PDK in i.MX Processors

24bit LVDS display looks like wrong color depth on imx6DL AI PDK

Re: 24bit LVDS display looks like wrong color depth on imx6DL AI PDK