[PATCH] drm/tegra: dc: Restore coupling of display controllers

[Dmitry Osipenko]

19.03.2021 10:06, Thierry Reding пишет:
> From: Thierry Reding <treding at nvidia.com>
> 
> Coupling of display controllers used to rely on runtime PM to take the
> companion controller out of reset. Commit fd67e9c6ed5a ("drm/tegra: Do
> not implement runtime PM") accidentally broke this when runtime PM was
> removed.
> 
> Restore this functionality by reusing the hierarchical host1x client
> suspend/resume infrastructure that's similar to runtime PM and which
> perfectly fits this use-case.
> 
> Fixes: fd67e9c6ed5a ("drm/tegra: Do not implement runtime PM")
> Reported-by: Dmitry Osipenko <digetx at gmail.com>
> Signed-off-by: Thierry Reding <treding at nvidia.com>

Hi,

This bug was originally reported by Paul Fertser, I redirected it to you.

Reported-by: Paul Fertser <fercerpav at gmail.com>

Formally, the stable kernel needs to be CCed since we want to have this
patch applied to the stable kernels.

Cc: stable at vger.kernel.org

Otherwise this is good to me, thank you!

Tested-by: Dmitry Osipenko <digetx at gmail.com>