[Intel-gfx] [PATCH 1/2] drm/i915/vlv: correct promotion timer value for RC6 Timeout method.

[Jesse Barnes]

On Wed, 27 Nov 2013 21:14:03 +0530
deepak.s at intel.com wrote:

> From: Deepak S <deepak.s at intel.com>
> 
> For RC6 Timeout method, we need to set promotion timer to 1750 us ( 1367
> * 1.28 us)
> 
> Signed-off-by: Deepak S <deepak.s at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 04e9863..cf3d54d 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4102,7 +4102,8 @@ static void valleyview_enable_rps(struct drm_device *dev)
>  	for_each_ring(ring, dev_priv, i)
>  		I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10);
>  
> -	I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350);
> +	/* Timer for RC6 Timeout Mode set to 1750 us ( 1367 * 1.28 us) */
> +	I915_WRITE(GEN6_RC6_THRESHOLD, 0x557);
>  
>  	/* allows RC6 residency counter to work */
>  	I915_WRITE(VLV_COUNTER_CONTROL,

Yeah I just sent this one too.  I'm fine with either one getting in.  I
also submitted one to do parallel restore of ring state, which we also
want.

Care to review my earlier ones?

http://lists.freedesktop.org/archives/intel-gfx/2013-November/036112.html
http://lists.freedesktop.org/archives/intel-gfx/2013-November/036111.html

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center