[PATCH 15/30] drm/i915: WaDisableRCCUnitClockGating isn't applicable to IVB

ville.syrjala
2013-07-05T13:49:44Z

WaDisableRCCUnitClockGating is only relevant for SNB.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b24a4c2..576f648 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4786,15 +4786,11 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
* Sanctuary and Tropics, and apparently anything else with
* alpha test or pixel discard.
*
- * According to the spec, bit 11 (RCCUNIT) must also be set,
- * but we didn't debug actual testcases to find it out.
- *
* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
* This implements the WaDisableRCZUnitClockGating:ivb workaround.
*/
I915_WRITE(GEN6_UCGCTL2,
- GEN6_RCZUNIT_CLOCK_GATE_DISABLE |
- GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
+ GEN6_RCZUNIT_CLOCK_GATE_DISABLE);

/* This is required by WaCatErrorRejectionIssue:ivb */
I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,