Re: [Intel-gfx] [PATCH v3 5/5] drm/i915/dg2: extend Wa_1409120013 to DG2

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Nov 17, 2021 at 08:43:19PM +0200, Ville Syrjälä wrote:
> On Tue, Nov 16, 2021 at 09:48:18AM -0800, Matt Roper wrote:
> > From: Matt Atwood <matthew.s.atwood@intel.com>
> > 
> > Extend existing workaround 1409120013 to DG2.
> 
> I don't see this listed for DG2.
> 
> > 
> > Cc: José Roberto de Souza <jose.souza@intel.com>
> > Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
> > Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_pm.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> > index 89dc7f69baf3..e721c421cc58 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -7444,9 +7444,9 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
> >  
> >  static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
> >  {
> > -	/* Wa_1409120013:tgl,rkl,adl-s,dg1 */
> > +	/* Wa_1409120013:tgl,rkl,adl-s,dg1,dg2 */
> >  	if (IS_TIGERLAKE(dev_priv) || IS_ROCKETLAKE(dev_priv) ||
> > -	    IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv))
> > +	    IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv) || IS_DG2(dev_priv))

AFAIK we're not even calling this function on dg2, so this is just dead
code. And in fact without dg2 this seems to be the same as DISPLAY_VER==12
so we shuld stop calling it on adl-p as well. We could then rip out most
of the platform checks in here.

> >  		intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN,
> >  				   DPFC_CHICKEN_COMP_DUMMY_PIXEL);
> >  
> > -- 
> > 2.33.0
> 
> -- 
> Ville Syrjälä
> Intel

-- 
Ville Syrjälä
Intel