diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2014-03-26 18:41:51 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-03-28 18:33:13 +0100 |
| commit | 5d708680eac2a8e2a0981007278a759df738d15b (patch) | |
| tree | 9436cada8da7fe91a805fd7d6bd6b4b0864ffa57 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | e568af1c626031925465a5caaab7cca1303d55c7 (diff) | |
drm/i915/bdw: Implement Wa4x4STCOptimizationDisable:bdw
Not implementing this W/A can lead to hangs.
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Rafael Barbalho <rafael.barbalho@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index c1e2d75f4c4..b66a43b90d1 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4882,6 +4882,10 @@ static void gen8_init_clock_gating(struct drm_device *dev) /* WaDisableSDEUnitClockGating:bdw */ I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); + + /* Wa4x4STCOptimizationDisable:bdw */ + I915_WRITE(CACHE_MODE_1, + _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE)); } static void haswell_init_clock_gating(struct drm_device *dev) |