NACK/Cmnt: [SRU] [J/OEM-5.14] [PATCH 0/1] Fix PSR flickers on Intel TGL laptops + AUO panel

[Kai-Heng Feng]

On Tue, Jul 5, 2022 at 4:47 PM Stefan Bader <stefan.bader at canonical.com> wrote:
>
> On 28.06.22 14:15, Kai-Heng Feng wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1980087
> >
> > [Impact]
> > Screen flickers on certain Intel TGL laptops + AUO panel.
> >
> > [Fix]
> > Enable PSR2 selective fetch only for the specific case to minimize the
> > regression risk.
> >
> > [Test]
> > Screen flickers can no longer be observed on affected laptops.
> >
> > [Where problems could occur]
> > The fix becomes very specific, so any other combination won't be affected at
> > all.
> >
> > Kai-Heng Feng (1):
> >    UBUNTU: SAUCE: drm/i915/display/psr: Fix flicker on TGL + AUO panel
> >
> >   drivers/gpu/drm/i915/display/intel_dp.c  |  2 +-
> >   drivers/gpu/drm/i915/display/intel_dp.h  |  2 ++
> >   drivers/gpu/drm/i915/display/intel_psr.c | 11 +++++++++++
> >   3 files changed, 14 insertions(+), 1 deletion(-)
> >
>
> This is not upstream, thus cannot considered as a SRU.

It's either this quirk with very limited scope, or massive i915 PSR
backport with known regression risk.

So no, this is not in upstream, but it's still much better than the
alternative as SRU material.

Kai-Heng

>
> -Stefan