Merge tag 'v3.14' into drm-intel-next-queued

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_pm.c

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c1e2d75f4c40be445b68f76a1320ac76d20e6f80..b66a43b90d1b5dc4321fb48a5e6844873179c37c 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4882,6 +4882,10 @@ static void gen8_init_clock_gating(struct drm_device *dev)
        /* WaDisableSDEUnitClockGating:bdw */
        I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
                   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
+
+       /* Wa4x4STCOptimizationDisable:bdw */
+       I915_WRITE(CACHE_MODE_1,
+                  _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));
 }
 
 static void haswell_init_clock_gating(struct drm_device *dev)