On Wed Jan 10, 2024 at 12:23 PM CET, Maxime Ripard wrote: > On Wed, Jan 10, 2024 at 12:00:23PM +0100, Luca Weiss wrote: > > On Wed Jan 10, 2024 at 11:58 AM CET, Konrad Dybcio wrote: > > > > > > > > > On 1/5/24 15:29, Luca Weiss wrote: > > > > Add the description for the display panel found on this phone and remove > > > > the simple-framebuffer that was in place until now > > > > > > Why? They should be able to coexist with a smooth-ish handoff > > > > Does that work upstream? I'm aware that downstream can do this but > > thought this was still missing upstream. > > It depends what you call smooth-ish I guess, but KMS handles the > handover just fine. You're likely to get a flicker during the transition > though. Right, seems to work. Also visually looks okay. fairphone-fp4:~$ dmesg | grep "frame buffer device" [ 0.250511] Console: switching to colour frame buffer device 135x146 [ 0.284146] simple-framebuffer a0000000.framebuffer: [drm] fb0: simpledrmdrmfb frame buffer device [ 2.576712] Console: switching to colour frame buffer device 135x146 [ 2.604907] msm_dpu ae01000.display-controller: [drm] fb0: msmdrmfb frame buffer device I thought before that having two outputs like this would cause two different framebuffers/display devices to appear, but yeah as I said seems okay. Will change in v2. Regards Luca > > Either way, the DT isn't the right place to choose, you should enable > both, and the distro will choose its policy through configuration. > > Maxime
