diff options
| author | Rafael Antognolli <rafael.antognolli@intel.com> | 2017-12-15 16:11:16 -0800 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-12-19 13:43:21 -0800 |
| commit | 01ab0f9216070f3337b3da8953a259072f5bd4f7 (patch) | |
| tree | c7a56343daa16220930b878ffe2fac67ab9f92c4 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | acfb9973a0d1e5dd14c40464d9a20945cd2ac02e (diff) | |
drm/i915: Implement WaDisableVFclkgate.
This workaround supposedly fixes some hangs in the VF unit.
Signed-off-by: Rafael Antognolli <rafael.antognolli@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171216001117.14232-1-rafael.antognolli@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 18779c6eb4bf..1db79a860b96 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -8447,6 +8447,11 @@ static void cnl_init_clock_gating(struct drm_i915_private *dev_priv) if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0)) val |= SARBUNIT_CLKGATE_DIS; I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, val); + + /* WaDisableVFclkgate:cnl */ + val = I915_READ(UNSLICE_UNIT_LEVEL_CLKGATE); + val |= VFUNIT_CLKGATE_DIS; + I915_WRITE(UNSLICE_UNIT_LEVEL_CLKGATE, val); } static void cfl_init_clock_gating(struct drm_i915_private *dev_priv) |