[PATCH 35/89] drm/i915/skl: Implement Wa4x4STCOptimizationDisable:skl

Damien Lespiau
2014-09-04T11:28:29Z

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0dc148c..c38baea 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -76,6 +76,10 @@ static void gen9_init_clock_gating(struct drm_device *dev)
*/
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
+
+ /* Wa4x4STCOptimizationDisable:skl */
+ I915_WRITE(CACHE_MODE_1,
+ _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));
}

static void i8xx_disable_fbc(struct drm_device *dev)
--
1.8.3.1