From: Ville Syrjälä Date: Wed, 22 Jan 2014 19:32:48 +0000 (+0200) Subject: drm/i915: WaDisableRCCUnitClockGating isn't applicable to IVB X-Git-Tag: firefly_0821_release~176^2~4105^2~62^2~51 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=28acf3b20c562b8afa513629db749a64c7c45924;p=firefly-linux-kernel-4.4.55.git drm/i915: WaDisableRCCUnitClockGating isn't applicable to IVB WaDisableRCCUnitClockGating is only relevant for SNB. Signed-off-by: Ville Syrjälä Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 7e85b3e8702d..f7efe69a914e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4861,15 +4861,11 @@ 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,