[Intel-gfx] [PATCH v2 2/2] drm/i915/skl: Increase PCODE CDCLK change notify timeout

[Chris Wilson]

On Fri, Nov 25, 2016 at 12:57:01PM +0200, Imre Deak wrote:
> commit 848496e5902833600f7992f4faa82dc1546051ba
> Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Date:   Wed Jul 13 16:32:03 2016 +0300
> 
>     drm/i915: Wait up to 3ms for the pcu to ack the cdclk change request on SKL
> 
> increased the timeout to match the spec, but we still see a timeout on
> at least one SKL. A CDCLK change request following the failed one will
> succeed nevertheless, so let's try to increase the timeout to 10ms.
> 
> v2:
> - Use 1ms poll period instead of 10us. (Chris)
> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Reference: https://bugs.freedesktop.org/show_bug.cgi?id=97929
> Signed-off-by: Imre Deak <imre.deak at intel.com>

If you are happy with it, so am I!
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

Possibly time to volunteer someone to look at the poll interval again.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre