[Intel-gfx] [PATCH 1/3] drm/i915: Enable fine-tuned RPS for cherryview

[Szwichtenberg, Radoslaw]

On Fri, 2017-02-10 at 15:03 +0000, Chris Wilson wrote:
> When the RPS tuning was applied to Baytrail, in commit 8fb55197e64d
> ("drm/i915: Agressive downclocking on Baytrail"), concern was given that
> it might cause Cherryview excess wakeups of the common power well.
> However, the static thresholds perform poorly for Kodi, and the GPU is
> unable to deliver the video frames on time. Enabling the dynamic, finer
> thresholds used on all other platforms (including Skylake and Broxton
> that also have the same multiple powerwell concerns) allows the GPU to
> pick a more appropriate frequency and not drop frames.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg at intel.com>