Re: [PATCH] drm/i915: Disable WaGsvRC0ResidencyMethod for vlv

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On Thu, 19 Mar 2015, deepak.s@xxxxxxxxxxxxxxx wrote:
> From: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
>
> Unfortunately WaGsvRC0ResidencyMethod causing system freeze on some
> of the baytrail systems :(. Switching back to legacy mode rps.
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88012
> Signed-off-by: Deepak S <deepak.s@xxxxxxxxxxxxxxx>

Introduced in

commit 31685c258e0b0ad6aa486c5ec001382cf8a64212
Author: Deepak S <deepak.s@xxxxxxxxxxxxxxx>
Date:   Thu Jul 3 17:33:01 2014 -0400

    drm/i915/vlv: WA for Turbo and RC6 to work together.

Cc: stable@xxxxxxxxxxxxxxx

> ---
>  drivers/gpu/drm/i915/i915_irq.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 6d8340d..7bbdede 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -4241,11 +4241,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
>  	INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work);
>  
>  	/* Let's track the enabled rps events */
> -	if (IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
> -		/* WaGsvRC0ResidencyMethod:vlv */
> -		dev_priv->pm_rps_events = GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED;
> -	else
> -		dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
> +	dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
>  
>  	INIT_DELAYED_WORK(&dev_priv->gpu_error.hangcheck_work,
>  			  i915_hangcheck_elapsed);
> -- 
> 1.9.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Jani Nikula, Intel Open Source Technology Center
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