Re: [PATCH v3] drm/i915/alpm: Add a quirk to keep the fast wake ahead of the IO buffer wake

["Hogander, Jouni" <jouni.hogander@intel.com>]

On Fri, 2026-09-04 at 07:48 -0400, Jake Steinman wrote:
> On Thu, 2026-09-04 Jouni Högander wrote:
> > This patch doesn't help much ATM because we wont get rid of the
> > quirk
> > disabling selective fetch anyways.
> 
> Understood. Which quirk is that? As of yesterday's drm-tip this
> machine
> only has the Panel Replay quirk; PSR2 with selective fetch is
> enabled,
> and that is where these CRC errors show up. If selective fetch is
> going
> to be quirked off for the DA16260 as well, then agreed, this can wait
> until the SU problem is understood.

Ok, I understood wrong.

I think PSR2 was working on that setup at the point when I introduced
that quirk

cb8d155b0806 drm/i915/psr: Disable Panel Replay on Dell XPS 16 DA16260
as a quirk

See https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7682

Maybe this is actually matter of bisection?

BR,
Jouni Högander

> 
> The SU problem is
> https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/9119.
> I'd much rather see that fixed than another quirk on this machine,
> and
> I can test whatever you want on it, same day.
> 
> Jake