On Mon, 2018-10-01 at 12:49 -0700, Rodrigo Vivi wrote:
> On Mon, Sep 24, 2018 at 03:45:24PM -0700, Dhinakaran Pandiyan wrote:
> > Commit '3cf71bc9904d ("drm/i915: Re-apply "Perform link quality
> > check,
> > unconditionally during long pulse"")' applies a work around for
> > sinks
>
> Fixes: ?
>
> Should this patch be on drm-intel-fixes for 4.19?
>
> If so, the cherry-pick failed anyway and a backported version is
> needed.
>
> Please let me know how to proceed here.
Looks like the patch can be cherry-picked cleanly if 1/6 was also
picked. So, the relevant commits in dinq are -
f24f6eb95807 drm/i915/dp: Restrict link retrain workaround to external
monitors
9ebd8202393d drm/i915/dp: Fix link retraining comment in
intel_dp_long_pulse()
-DK
>
> Thanks in advance,
> Rodrigo.
>
> > that don't signal link loss. The work around does not need to have
> > to be
> > that broad as the issue was seen with only one particular monitor;
> > limit
> > this only for external displays as eDP features like PSR turn off
> > the link
> > and the driver ends up retraining the link seeeing that link is not
> > synchronized.
> >
> > Cc: Lyude Paul <lyude@xxxxxxxxxx>
> > Cc: Jan-Marek Glogowski <glogow@xxxxxxxxxx>
> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > References: 3cf71bc9904d ("drm/i915: Re-apply "Perform link quality
> > check, unconditionally during long pulse"")
> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/intel_dp.c | 13 +++++++------
> > 1 file changed, 7 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c
> > b/drivers/gpu/drm/i915/intel_dp.c
> > index 34c561011e7a..6130d05d8b88 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -5072,12 +5072,13 @@ intel_dp_long_pulse(struct intel_connector
> > *connector,
> > */
> > status = connector_status_disconnected;
> > goto out;
> > - } else {
> > - /*
> > - * Some external monitors do not signal loss of link
> > - * synchronization with an IRQ_HPD, so force a link
> > status
> > - * check.
> > - */
> > + }
> > +
> > + /*
> > + * Some external monitors do not signal loss of link
> > synchronization
> > + * with an IRQ_HPD, so force a link status check.
> > + */
> > + if (!intel_dp_is_edp(intel_dp)) {
> > struct intel_encoder *encoder =
> > &dp_to_dig_port(intel_dp)->base;
> >
> > intel_dp_retrain_link(encoder, ctx);
> > --
> > 2.17.1
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
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