iMX53 QSB 640x480?

[yvan]

Hello,

I'm trying to use a 640x480 LVDS screen on my mx53QSB.

So I added 

         /* 640x480 @ 60 Hz, 31.5 kHz hsync */

        { "VGA", 60, 640, 480, 39721,

        40, 24,

        32, 11,

        96, 2,

         0,

        FB_VMODE_NONINTERLACED,

        0,},

in video_modes[] of arch/arm/mach-mx5/mx53_loco.c

recompiled...

Then I changed my uBoot env

lvds=mxcdi0fb:RGB666,VGA ldb

instead of

lvds=mxcdi0fb:RGB666,XGA ldb

And... I've got nothing on the screen

Note : When using XGA the screen is working (with a cropped image of course)

What am I missing? 

[LilyZhang]

Yes. Please ensure you also add relative mode into drivers/video/mxc/ldb.c.

Please also check the clock configurations in ldb.c and ensure it can support your panel

[yvan]

Ok! just found it!

We also need to add this new mode in :

drivers/video/mxc/ldb.c