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-rw-r--r--drivers/gpu/drm/i915/intel_pm.c8
-rw-r--r--drivers/gpu/drm/i915/intel_ringbuffer.c10
2 files changed, 10 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index bebefe79f7ce..2b89aacdda90 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -63,14 +63,6 @@ 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));
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b869f1c68753..248db5157e02 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -882,6 +882,16 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE);
+ if (INTEL_REVID(dev) == SKL_REVID_A0) {
+ /*
+ * 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);
+ }
+
return 0;
}