diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8e7f02e6008a..8c69ec9eb6ee 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -8471,11 +8471,13 @@ static void cnl_init_clock_gating(struct drm_i915_private *dev_priv) I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) | DISP_FBC_MEMORY_WAKE); + val = I915_READ(SLICE_UNIT_LEVEL_CLKGATE); + /* ReadHitWriteOnlyDisable:cnl */ + val |= RCCUNIT_CLKGATE_DIS; /* WaSarbUnitClockGatingDisable:cnl (pre-prod) */ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0)) - I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, - I915_READ(SLICE_UNIT_LEVEL_CLKGATE) | - SARBUNIT_CLKGATE_DIS); + val |= SARBUNIT_CLKGATE_DIS; + I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, val); /* Display WA #1133: WaFbcSkipSegments:cnl */ val = I915_READ(ILK_DPFC_CHICKEN); |