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path: root/drivers/gpu/drm/i915/intel_pm.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 64eb3b82b466..4f5dcf545c89 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -77,6 +77,14 @@ static void gen9_init_clock_gating(struct drm_device *dev)
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
+ /*
+ * WaDisableDgMirrorFixInHalfSliceChicken5:skl
+ * This is a pre-production w/a.
+ */
+ I915_WRITE(GEN9_HALF_SLICE_CHICKEN5,
+ I915_READ(GEN9_HALF_SLICE_CHICKEN5) &
+ ~GEN9_DG_MIRROR_FIX_ENABLE);
+
/* Wa4x4STCOptimizationDisable:skl */
I915_WRITE(CACHE_MODE_1,
_MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));
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