Do you understand what those modes actually do?
The behaviour of burst mode in DRM is undefined.
vc4 (ie Pi0-4) ignores the flags.
RP1 (Pi5) should support MODE_VIDEO and MODE_VIDEO_SYNC_PULSE. The behaviour of the hardware when you set VIDEO_BURST would need to be checked - the clocks won't change, so it may drop to LP more frequently, but that's about it.
The parsing code is at https://github.com/raspberrypi/linux/bl ... 4956-L4983
PR welcome if you wished to add an override for the mode and it actually does something useful.
The behaviour of burst mode in DRM is undefined.
vc4 (ie Pi0-4) ignores the flags.
RP1 (Pi5) should support MODE_VIDEO and MODE_VIDEO_SYNC_PULSE. The behaviour of the hardware when you set VIDEO_BURST would need to be checked - the clocks won't change, so it may drop to LP more frequently, but that's about it.
The parsing code is at https://github.com/raspberrypi/linux/bl ... 4956-L4983
PR welcome if you wished to add an override for the mode and it actually does something useful.
Statistics: Posted by 6by9 — Tue Nov 26, 2024 5:00 pm