From: Ville Syrjälä Date: Wed, 22 Jan 2014 19:32:56 +0000 (+0200) Subject: drm/i915: Drop WaDisableRCPBUnitClockGating:vlv X-Git-Tag: next-20140306~57^2~4^2~44 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3c0edaebb950349e6014afabbda379f2b5376c0d;p=karo-tx-linux.git drm/i915: Drop WaDisableRCPBUnitClockGating:vlv Only early VLV steppings needed thist. Should no longer be relevant. 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 ac7462a2c2ce..dd287910b2f6 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4928,24 +4928,16 @@ static void valleyview_init_clock_gating(struct drm_device *dev) I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); - /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock - * gating disable must be set. Failure to set it results in - * flickering pixels due to Z write ordering failures after - * some amount of runtime in the Mesa "fire" demo, and Unigine - * Sanctuary and Tropics, and apparently anything else with - * alpha test or pixel discard. - * + /* * According to the spec, bit 13 (RCZUNIT) must be set on IVB. * This implements the WaDisableRCZUnitClockGating:vlv workaround. * - * Also apply WaDisableVDSUnitClockGating:vlv and - * WaDisableRCPBUnitClockGating:vlv. + * Also apply WaDisableVDSUnitClockGating:vlv. */ I915_WRITE(GEN6_UCGCTL2, GEN7_VDSUNIT_CLOCK_GATE_DISABLE | GEN7_TDLUNIT_CLOCK_GATE_DISABLE | - GEN6_RCZUNIT_CLOCK_GATE_DISABLE | - GEN6_RCPBUNIT_CLOCK_GATE_DISABLE); + GEN6_RCZUNIT_CLOCK_GATE_DISABLE); /* WaDisableL3Bank2xClockGate:vlv */ I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE);