Does mediatek drm has a support resolution list?

General Discussion
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1

For the HDMI output resolution, does the drm driver has a support resolution list in the Yocto BSP ?

How to output a fixed-resolution from HDMI ?

3

Hi Alan,

There is no supported resolution list provided in the Yocto BSP. Typically, we check if a resolution is valid based on the total clock rate and the maximum width of 3840, due to the hardware line buffer limitation.

To fix the resolution for HDMI, you can prepare a custom (fake) EDID containing only the timing you need, and memcpy it to the get EDID function in the HDMI driver. The driver will then extract the timing from the EDID and use it accordingly.