From b970b48685a7ae2953e659f7e657cde2949b12ae Mon Sep 17 00:00:00 2001 From: Nick Hoath Date: Tue, 8 Sep 2015 10:31:53 +0100 Subject: [PATCH] drm/i915/gen9: Add WaDisableMinuteIaClockGating Signed-off-by: Nick Hoath Signed-off-by: Arun Siluvery Reviewed-by: Sagar Arun Kamble Signed-off-by: Daniel Vetter --- 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 5eafd31fb4a6..e0601cc5a795 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); -- 2.20.1