On Sat, Jun 24, 2023 at 7:47 AM Manuel Wagesreither <[email protected]> wrote:
> Am Sa, 24. Jun 2023, um 00:04, schrieb Khem Raj: > > On Fri, Jun 23, 2023 at 2:39 PM Manuel Wagesreither <[email protected]> > wrote: > >> > >> Hi users of meta-raspberrypi, > >> > >> I'd like to ask around if for you people vc4-kms-v3d (opposed to > vc4-fkms-v3d) *really* is the working way to get vc4 support on a Raspberry > Pi 4 Model B. > >> > >> Both on master and kirkstone, vc4-kms-v3d is the default. It's defined > in /conf/machine/raspberrypi4-64.conf: > >> > >> VC4DTBO ?= "vc4-kms-v3d" > >> > >> I was mildly surprised to find this, because on my system (running > Kirkstone) I can get the screen to work only if I specify vc4-fkms-v3d. > >> > >> Commit a6fa6b3aec36b92c3750852dd6788af9d2ce08f6 [1] broke my build. The > commit message further suggests that vc4-Fkms-v3d is broken, while > vc4-kms-v3d is not. So I'm wondering:hy is it exactly the other way round > on my machine? > >> > >> raspberrypi4: Use full kms (vc4-kms-v3d) DT overlay > >> > >> With latest 5.10 kernel fkms version fails to bring up VC4 and we > do not > >> get dri device initialized ( /dev/dri ) is empty, which means we > can not > >> launch wayland componsitors. > >> > > > > We have moved away from 5.10 kernel to 5.15 and then 6.1, so its > > possible that fkms is working fine again. > > If you test it with both vc4graphics and userland graphics do both work ? > > The meta-raspberrypi commit I'm on > (a6fa6b3aec36b92c3750852dd6788af9d2ce08f6) has recipes for Linux 5.10.110 > and 5.15.34 and on both of them vc4-fkms-v3d works while vc4-kms-v3d does > not. > > * When using vc4-kms-v3d, the screen goes dark very early in the boot > process. > * When using vc4-kms-v3d, kmscube and weston-wayland both work. Which release branch are you using for Your project > > >
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#60424): https://lists.yoctoproject.org/g/yocto/message/60424 Mute This Topic: https://lists.yoctoproject.org/mt/99727959/21656 Group Owner: [email protected] Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
