W dniu 26.08.2022 o 16:56, Dom Cobley pisze: > 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. Hi Dom, I just tested the 868f1cf firmware and its associated kernel, and everything works like a charm for me, both USB boot and VEC power management. Thanks!
