drm/i915/kbl: Add WaDisableGamClockGating

[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 64e161fda2e8d5cd32f9d3c098ca173d9fdc9c02..afa5eeed5859bc7dcb3ec24f89bfcb36fb3f4b3c 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6983,6 +6983,11 @@ static void kabylake_init_clock_gating(struct drm_device *dev)
        if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
                I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
                           GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
+
+       /* WaDisableGamClockGating:kbl */
+       if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
+               I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
+                          GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
 }
 
 static void skylake_init_clock_gating(struct drm_device *dev)