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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2016-06-07 17:19:05 +0300 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@intel.com> | 2016-06-08 16:24:23 +0300 |
| commit | 8aeb7f624fbf8a68a9c67f831d4158a0f80ea920 (patch) | |
| tree | 5cd081ad003ddb47880462919e4cea5c2de1270c /drivers/gpu/drm/i915/intel_pm.c | |
| parent | b033bb6d5d3a0e51d56b3ba929a8db4e18da0892 (diff) | |
| download | linux-rt-8aeb7f624fbf8a68a9c67f831d4158a0f80ea920.tar.gz | |
drm/i915/kbl: Add WaDisableGamClockGating
According to bspec we need to disable gam unit clock gating on
on kbl revids A0 and B0.
References: HSD#2226858, HSD#1944358
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-14-git-send-email-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 64e161fda2e8..afa5eeed5859 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6983,6 +6983,11 @@ static void kabylake_init_clock_gating(struct drm_device *dev) if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); + + /* WaDisableGamClockGating:kbl */ + if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) + I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | + GEN6_GAMUNIT_CLOCK_GATE_DISABLE); } static void skylake_init_clock_gating(struct drm_device *dev) |