diff --git a/[refs] b/[refs]
index 25c60a38fe05..29af7024b824 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6edaa7fcf287b92fb231a9e23cd6b5b0fc3dddb2
+refs/heads/master: e3f33d46fd917747e966f8e6d25f2940223ad1ee
diff --git a/trunk/drivers/gpu/drm/i915/i915_reg.h b/trunk/drivers/gpu/drm/i915/i915_reg.h
index 5d7cf5f7e750..782e5d1dc218 100644
--- a/trunk/drivers/gpu/drm/i915/i915_reg.h
+++ b/trunk/drivers/gpu/drm/i915/i915_reg.h
@@ -4043,6 +4043,9 @@
 # define GEN6_RCPBUNIT_CLOCK_GATE_DISABLE		(1 << 12)
 # define GEN6_RCCUNIT_CLOCK_GATE_DISABLE		(1 << 11)
 
+#define GEN7_UCGCTL4				0x940c
+#define  GEN7_L3BANK2X_CLOCK_GATE_DISABLE	(1<<25)
+
 #define GEN6_RPNSWREQ				0xA008
 #define   GEN6_TURBO_DISABLE			(1<<31)
 #define   GEN6_FREQUENCY(x)			((x)<<25)
diff --git a/trunk/drivers/gpu/drm/i915/intel_pm.c b/trunk/drivers/gpu/drm/i915/intel_pm.c
index 47c1a3e9b4af..17c16f026244 100644
--- a/trunk/drivers/gpu/drm/i915/intel_pm.c
+++ b/trunk/drivers/gpu/drm/i915/intel_pm.c
@@ -3517,6 +3517,8 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
 		   GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
 		   GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
 
+	I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE);
+
 	for_each_pipe(pipe) {
 		I915_WRITE(DSPCNTR(pipe),
 			   I915_READ(DSPCNTR(pipe)) |