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charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Nicolas, On 2/28/20 4:09 PM, Nicolas Saenz Julienne wrote: > Hi Sergey, > > On Thu, 2020-02-20 at 11:21 +0300, Sergey Suloev wrote: >> Hello, guys, >> >> could anyone clarify the status of vc4 drm support on RPI 3A+ ? >> >> I tried to build kernel 5.5 and 5.6-rc2 in 32bit and aarch64 >> configurations with VC4 turned ON but both unsuccessful - vc4 drm driver >> is listed in memory but not working and not producing any typical DRM >> log output. > I managed to get my hands on a rpi3a+ and reproduce the issue. 'dmesg -lerr' > outputs this: > > bcm2835-power: Timeout waiting for grafx power OK > > This is a known issue, see https://github.com/raspberrypi/linux/issues/3046. > I attached a device-tree patch in case you want to verify it fixes the issue on > your board. the patch works, thank you > @Stefan I guess I'm going to have to revert the pm patch, any comments before I > do? > > Regards, > Nicolas > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel