[OMAP 5] to set different resolutions on HDMI display

Hareesh Das

Hi,

I use Panda5 evm with SW release from http://omapedia.org/wiki/Panda5AJ.1.5_Release_Notes. I need to set a particular resolutions on my HDMI output display. How to do this ?

Thanks,

Hari

over 10 years ago

0 Boyko Kazakov over 10 years ago

TI__Genius 10965 points

Hi Hari,

You can try changing it in userspace as shown in the wiki page:

http://omappedia.org/wiki/Bootargs_for_enabling_display#OMAP4_HDMI

or add this in the cmd line: omapdss.def_disp=hdmi omapfb.mode=hdmi:1920x1080@60

Have in mind that the resolution must have the timing matched in the HDMI timing table.

Regards,

Boyko

0 Hareesh Das over 10 years ago in reply to Boyko Kazakov

Prodigy 230 points

Hi Boyko,

Thanks for your prompt reply. I have to pick a resolution from any of the supported resolutions of omap5 dss. Is it possible to get this information of complete supported resolutions of OMAP5 HDMI out ?

Thanks & Regards,

Hari

0 Boyko Kazakov over 10 years ago in reply to Hareesh Das

TI__Genius 10965 points

Hi Hari,

You can check the supported resolutions in the HDMI chapter of the device TRM. ( they are verified, that doesn’t necessary mean that non listed resolutions will not function properly)

Regards,

Boyko

0 Hareesh Das over 10 years ago in reply to Boyko Kazakov

Prodigy 230 points

Hi Boyko,

Sure, I will do this. Can you tell me which part of the kernel driver modules / functions are taking care of this ?, so that I can get a better understanding (since there is no "display0/custom_edid_timing" sysfs entry for OMAP5 code base, How this is handling in driver module ? )

Thanks & Regards,

Hari

0 Boyko Kazakov over 10 years ago in reply to Hareesh Das

TI__Genius 10965 points

Hi Hari,

Why do you thinker with the custom edid timing? check the bootargs passed to the kernel in order to change the resolution.

Regards,

Boyko

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[OMAP 5] to set different resolutions on HDMI display