Re: [Intel-gfx] [PATCH 2/7] drm/i915: Work around DISPLAY_PHY_CONTROL register corruption on CHV

2015-05-08 Thread Deepak S
On Friday 08 May 2015 06:49 PM, Ville Syrjälä wrote: On Fri, May 08, 2015 at 06:24:42PM +0530, Deepak S wrote: On Friday 10 April 2015 08:51 PM, ville.syrj...@linux.intel.com wrote: From: Ville Syrjälä ville.syrj...@linux.intel.com Sometimes (exactly when is a bit unclear)

Re: [Intel-gfx] [PATCH 2/7] drm/i915: Work around DISPLAY_PHY_CONTROL register corruption on CHV

2015-05-08 Thread Daniel Vetter
On Fri, May 08, 2015 at 04:19:13PM +0300, Ville Syrjälä wrote: On Fri, May 08, 2015 at 06:24:42PM +0530, Deepak S wrote: On Friday 10 April 2015 08:51 PM, ville.syrj...@linux.intel.com wrote: diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index

Re: [Intel-gfx] [PATCH 2/7] drm/i915: Work around DISPLAY_PHY_CONTROL register corruption on CHV

2015-05-08 Thread Ville Syrjälä
On Fri, May 08, 2015 at 06:24:42PM +0530, Deepak S wrote: On Friday 10 April 2015 08:51 PM, ville.syrj...@linux.intel.com wrote: From: Ville Syrjälä ville.syrj...@linux.intel.com Sometimes (exactly when is a bit unclear) DISPLAY_PHY_CONTROL appears to get corrupted. The values I've

Re: [Intel-gfx] [PATCH 2/7] drm/i915: Work around DISPLAY_PHY_CONTROL register corruption on CHV

2015-05-08 Thread Deepak S
On Friday 10 April 2015 08:51 PM, ville.syrj...@linux.intel.com wrote: From: Ville Syrjälä ville.syrj...@linux.intel.com Sometimes (exactly when is a bit unclear) DISPLAY_PHY_CONTROL appears to get corrupted. The values I've managed to read from it seem to have some pattern but vary quite a