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drm/i915: WaDisableRCCUnitClockGating isn't applicable to IVB
WaDisableRCCUnitClockGating is only relevant for SNB. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -4861,15 +4861,11 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
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* Sanctuary and Tropics, and apparently anything else with
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* alpha test or pixel discard.
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*
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* According to the spec, bit 11 (RCCUNIT) must also be set,
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* but we didn't debug actual testcases to find it out.
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*
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* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
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* This implements the WaDisableRCZUnitClockGating:ivb workaround.
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*/
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I915_WRITE(GEN6_UCGCTL2,
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GEN6_RCZUNIT_CLOCK_GATE_DISABLE |
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GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
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GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
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/* This is required by WaCatErrorRejectionIssue:ivb */
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I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
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