Re: [PATCH v2 00/91] drm/vc4: Support BCM2711 Display Pipelin

[Jian-Hong Pan]

Maxime Ripard <maxime@xxxxxxxxxx> æ 2020å5æ28æ éå äå3:30åéï
>
> 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

2. The screen flashes suddenly sometimes.

3. The higher resolutions, like 1920x1080 ... are lost after hot
re-plug HDMI cable (HDMI0)

Jian-Hong Pan