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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.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d212e42638d..9b95f78d352 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4416,7 +4416,10 @@ static void ironlake_init_clock_gating(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
- /* Required for FBC */
+ /*
+ * Required for FBC
+ * WaFbcDisableDpfcClockGating:ilk
+ */
dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
ILK_DPFDUNIT_CLOCK_GATE_ENABLE;