Re: [Intel-gfx] [PATCH 1/4] drm/i915/dsi/xelpd: Fix the bit mask for wakeup GB

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

On Tue, Oct 19, 2021 at 01:05:20PM +0300, Jani Nikula wrote:
> On Mon, 18 Oct 2021, Vandita Kulkarni <vandita.kulkarni@intel.com> wrote:
> 
> Commit message goes here.
> 
> > Fixes: f87c46c43175 ("drm/i915/dsi/xelpd: Add WA to program LP to HS wakeup guardband")
> > Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/icl_dsi.c | 2 +-
> >  drivers/gpu/drm/i915/i915_reg.h        | 3 ++-
> >  2 files changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
> > index 9ee62707ec72..8c166f92f8bd 100644
> > --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> > +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> > @@ -1271,7 +1271,7 @@ static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
> >  	if (DISPLAY_VER(i915) == 13) {
> >  		for_each_dsi_port(port, intel_dsi->ports)
> >  			intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
> > -				     TGL_DSI_CHKN_LSHS_GB, 0x4);
> > +				     TGL_DSI_CHKN_LSHS_GB_MASK, TGL_DSI_CHKN_LSHS_GB_MASK);
> 
> I think you mean the value should be TGL_DSI_CHKN_LSHS_GB.

IMO the value should never be named that. It should be
TGL_DSI_CHKN_LSHS_GB_<something>.

-- 
Ville Syrjälä
Intel