Mika Kuoppala 3af5f1137c drm/i915/kbl: Add WaDisableGafsUnitClkGating
We need to disable clock gating in this unit to work around
hardware issue causing possible corruption/hang.

v2: name the bit (Ville)
v3: leave the fix enabled for 2227050 and set correct bit (Matthew)
v4: Split out the skl part in separate commit for easier backport

References: HSD#2227156, HSD#2227050
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-20-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 4de5d7ccbccc88d2f7b1bcdc2180196ded7db8b8)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-07-15 15:51:27 +03:00
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