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drm/i915/cnl: document WaVFUnitClockGatingDisable 

No functional change. WA is already properly applied.
but in different databases it has different names.
Let's document all of them to avoid future confusion.

Cc: Rafael Antognolli <rafael.antognolli@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180306012000.18928-1-rodrigo.vivi@intel.com
This commit is contained in:
Rodrigo Vivi 2018-03-05 17:20:00 -08:00
parent c90c275c6f
commit 14941b6e86
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/i915/intel_pm.c
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@ -8523,6 +8523,7 @@ static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, val);
/* WaDisableVFclkgate:cnl */
/* WaVFUnitClockGatingDisable:cnl */
val = I915_READ(UNSLICE_UNIT_LEVEL_CLKGATE);
val |= VFUNIT_CLKGATE_DIS;
I915_WRITE(UNSLICE_UNIT_LEVEL_CLKGATE, val);