Hi, On Mon, Jun 01, 2020 at 03:58:26PM +0800, Jian-Hong Pan wrote: > Maxime Ripard <maxime@xxxxxxxxxx> 於 2020年5月28日 週四 下午3:30寫道： > > > > Hi Daniel, > > > > On Wed, May 27, 2020 at 05:15:12PM +0800, Daniel Drake wrote: > > > On Wed, May 27, 2020 at 5:13 PM Maxime Ripard <maxime@xxxxxxxxxx> wrote: > > > > I'm about to send a v3 today or tomorrow, I can Cc you (and Jian-Hong) if you > > > > want. > > > > > > That would be great, although given the potentially inconsistent > > > results we've been seeing so far it would be great if you could > > > additionally push a git branch somewhere. > > > That way we can have higher confidence that we are applying exactly > > > the same patches to the same base etc. > > > > So I sent a new iteration yesterday, and of course forgot to cc you... Sorry for > > that. > > > > I've pushed my current branch here: > > https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux.git/log/?h=rpi4-kms > > Thanks to Maxime! > > I have tried your repository on branch rpi4-kms. The DRM VC4 is used! > But got some issues: > 1. Some weird error message in dmesg. Not sure it is related, or not > [ 5.219321] [drm:vc5_hdmi_init_resources] *ERROR* Failed to get > HDMI state machine clock > https://gist.github.com/starnight/3f317dca121065a361cf08e91225e389 That's a deferred probing. The first time the HDMI driver is being probed, the firmware clock driver has not been probed yet. It's making another attempt later on, which succeeds. > 2. The screen flashes suddenly sometimes. > > 3. The higher resolutions, like 1920x1080 ... are lost after hot > re-plug HDMI cable (HDMI0) I'm not sure on how to exactly reproduce those issues (or what they are) though, can you expand on this? Maxime
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