From acd5c3464038a550359433362055849e83351d89 Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Wed, 26 Mar 2014 16:55:46 +0000 Subject: [PATCH] drm/i915/skl: Implement WaDisableSDEUnitClockGating:skl Reviewed-by: Rodrigo Vivi Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index fa87f1ec44ec..81465e65e876 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -68,6 +68,14 @@ static void gen9_init_clock_gating(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; + + /* + * WaDisableSDEUnitClockGating:skl + * This seems to be a pre-production w/a. + */ + I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | + GEN8_SDEUNIT_CLOCK_GATE_DISABLE); } static void i8xx_disable_fbc(struct drm_device *dev) -- 2.20.1