Re: [Intel-gfx] [PATCH 2/3] drm/i915: Disable trickle feed via MI_ARB_STATE for gen4

2013-06-04 Thread Chris Wilson
On Tue, May 21, 2013 at 03:28:33PM +0300, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä > > According to BSpec, trickle feed should be disabled for BW and > mobile CL. Those constraints seem to match all of our gen4 chipsets. > > Trickle feed is disabled via the MI_ARB_STATE registe

[Intel-gfx] [PATCH 2/3] drm/i915: Disable trickle feed via MI_ARB_STATE for gen4

2013-05-21 Thread ville . syrjala
From: Ville Syrjälä According to BSpec, trickle feed should be disabled for BW and mobile CL. Those constraints seem to match all of our gen4 chipsets. Trickle feed is disabled via the MI_ARB_STATE register instead of per plane controls on gen4. Signed-off-by: Ville Syrjälä --- drivers/gpu/dr