From: Ville Syrjälä Date: Thu, 27 Feb 2014 19:59:02 +0000 (+0200) Subject: drm/i915: Implement WaDisableSDEUnitClockGating:bdw X-Git-Tag: next-20140306~56^2~16 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4f1ca9e94057de098d65bc7477e8f89dd51609aa;p=karo-tx-linux.git drm/i915: Implement WaDisableSDEUnitClockGating:bdw Signed-off-by: Ville Syrjälä Reviewed-by: Ben Widawsky Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index d11a9ea5884d..c913ca5c3b39 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4906,6 +4906,9 @@ #define GEN7_UCGCTL4 0x940c #define GEN7_L3BANK2X_CLOCK_GATE_DISABLE (1<<25) +#define GEN8_UCGCTL6 0x9430 +#define GEN8_SDEUNIT_CLOCK_GATE_DISABLE (1<<14) + #define GEN6_RPNSWREQ 0xA008 #define GEN6_TURBO_DISABLE (1<<31) #define GEN6_FREQUENCY(x) ((x)<<25) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 739eabc814e9..5819f5c92554 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4870,6 +4870,10 @@ static void gen8_init_clock_gating(struct drm_device *dev) I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); + + /* WaDisableSDEUnitClockGating:bdw */ + I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | + GEN8_SDEUNIT_CLOCK_GATE_DISABLE); } static void haswell_init_clock_gating(struct drm_device *dev)