Re: [PATCH 08/12] drm/i915/skl: Remove WaDisableSDEUnitClockGating

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On Fri, Sep 25, 2015 at 02:33:42PM +0100, Arun Siluvery wrote:
> Dropping it because it is for pre-production stepping.
> 
> Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index be39f7ad..a6ee0d3 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -77,12 +77,10 @@ static void skl_init_clock_gating(struct drm_device *dev)
>  
>  	if (INTEL_REVID(dev) <= SKL_REVID_B0) {
>  		/*
> -		 * WaDisableSDEUnitClockGating:skl
>  		 * WaSetGAPSunitClckGateDisable:skl
>  		 */
>  		I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
> -			   GEN8_GAPSUNIT_CLOCK_GATE_DISABLE |
> -			   GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
> +			   GEN8_GAPSUNIT_CLOCK_GATE_DISABLE);

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Not that BXT has the same with another name
WaSetSDEunitClckGatingDisable. We seem to have the "wrong" name in the
code for BXT. Also it could apparently use an A0 check.

>  
>  		/* WaDisableVFUnitClockGating:skl */
>  		I915_WRITE(GEN6_UCGCTL2, I915_READ(GEN6_UCGCTL2) |
> -- 
> 1.9.1
> 
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-- 
Ville Syrjälä
Intel OTC
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