On Fri, 26 Aug 2022 at 05:08, Mateusz Kwiatkowski <kfyatek@xxxxxxxxx> wrote: > - Commenting out the pm_runtime_put() / pm_runtime_get_sync() calls in vc4_vec.c > - Reverting this PR by Dom Cobley a.k.a. popcornmix: > https://github.com/raspberrypi/linux/pull/4639 > > Either of these approaches makes VEC mode switching work again. Obviously > neither is appropriate for a permanent solution. Might be worth trying the latest rpi-update firmware. There was a change that affects restoring PIXEL/VEC clocks after a power domain cycle. There is also a fix for a USB boot breakage. If you still have an issue that occurs in downstream pi tree but not upstream, then create a linux github issue.
