On Thu, 2021-04-22 at 07:39 -0700, Souza, Jose wrote:
> On Thu, 2021-04-22 at 12:54 +0300, Gwan-gyeong Mun wrote:
> > TGL PSR2 hardware tracking shows momentary flicker and screen shift
> > if
> > TGL Display stepping is B1 from A0.
> > It has been fixed from TGL Display stepping C0.
> >
> > HSDES: 18015970021
> > HSDES: 2209313811
> > BSpec: 55378
> >
> > Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
> > Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/display/intel_psr.c | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> > b/drivers/gpu/drm/i915/display/intel_psr.c
> > index 4ad756e238c5..2cc9eeab4baf 100644
> > --- a/drivers/gpu/drm/i915/display/intel_psr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> > @@ -739,6 +739,12 @@ static bool intel_psr2_config_valid(struct
> > intel_dp *intel_dp,
> > return false;
> > }
> >
> >
> >
> >
> >
> >
> >
> >
> > + /* Wa_2209313811 */
> > + if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B1)) {
>
> Missing to check if manual tracking is being used, in this case we
> can enable PSR2 in those display steppings.
Thanks for reviewing. I'll update it in V2.
>
> > + drm_dbg_kms(&dev_priv->drm, "PSR2 is not supported
> > this Display stepping\n");
> > + return false;
> > + }
> > +
> > /* Wa_16011181250 */
> > if (IS_ROCKETLAKE(dev_priv) || IS_ALDERLAKE_S(dev_priv)) {
> > drm_dbg_kms(&dev_priv->drm, "PSR2 is defeatured for
> > this platform\n");
>
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