Troubleshooting • Re: HDMI output into TI TFP401A + 7 inch RGB parallel display

so what is the correct syntax:

Code:

drm.edid_firmware=HDMI-A-1:rubbish.bin video=HDMI-A-1:D

or

Code:

drm.edid_firmware=HDMI-A-1:rubbish.bin

Two different things.

"drm.edid_firmware=HDMI-A-1:rubbish.bin" will read /lib/firmware/rubbish.bin instead of reading it from the display. If the display is doing HPD and similar correctly but either not supplying an EDID, or the EDID is corrupt/incorrect, then this is the best solution.

"video=HDMI-A-1:D" ignores HPD and enables the output.
If you also specify a resolution/refresh rate then it will either mark that WxH@refresh found in the EDID as the preferred mode, or it will create a new mode using either GTF or CVT formulae and mark that as preferred.

Statistics: Posted by aBUGSworstnightmare — Thu May 16, 2024 6:39 pm