Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
On 9/8/2015 3:01 PM, Arun Siluvery wrote:
From: Nick Hoath <nicholas.hoath@xxxxxxxxx>
Signed-off-by: Nick Hoath <nicholas.hoath@xxxxxxxxx>
Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_guc_loader.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 5eafd31..e0601cc 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -330,6 +330,13 @@ static int guc_ucode_xfer(struct drm_i915_private *dev_priv)
/* Enable MIA caching. GuC clock gating is disabled. */
I915_WRITE(GUC_SHIM_CONTROL, GUC_SHIM_CONTROL_VALUE);
+ /* WaDisableMinuteIaClockGating:skl,bxt */
+ if ((IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) ||
+ (IS_BROXTON(dev) && INTEL_REVID(dev) == BXT_REVID_A0)) {
+ I915_WRITE(GUC_SHIM_CONTROL, (I915_READ(GUC_SHIM_CONTROL) &
+ ~GUC_ENABLE_MIA_CLOCK_GATING));
+ }
+
/* WaC6DisallowByGfxPause*/
I915_WRITE(GEN6_GFXPAUSE, 0x30FFF);
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