On Sun, Apr 15, 2012 at 12:54:00AM +0200, Daniel Vetter wrote: > Copy&pasted from the vlv setup code. According to docs, we need that > on ivb, too. > > Cc: Ben Widawsky <ben at bwidawsk.net> > Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch> Ben, can you please take a look at this? Thanks, Daniel > --- > drivers/gpu/drm/i915/intel_display.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index 33aaad3..7be1d1a 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -8938,6 +8938,11 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) > DISPPLANE_TRICKLE_FEED_DISABLE); > intel_flush_display_plane(dev_priv, pipe); > } > + > + /* WaDisable4x2SubspanOptimization */ > + I915_WRITE(CACHE_MODE_1, I915_READ(CACHE_MODE_1) | > + (PIXEL_SUBSPAN_COLLECT_OPT_DISABLE << 16) | > + PIXEL_SUBSPAN_COLLECT_OPT_DISABLE); > } > > static void valleyview_init_clock_gating(struct drm_device *dev) > -- > 1.7.10 > -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
