[Intel-gfx] [PATCH v6] drm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated.

[Ville Syrjälä]

On Thu, Jan 30, 2014 at 11:08:16PM +0530, deepak.s at intel.com wrote:
> From: Deepak S <deepak.s at intel.com>
> 
> When we enter RC6 and GFX Clocks are off, the voltage remains higher
> than Vmin. When we try to set the freq to RPn, it might fail since the
> Gfx clocks are down. So to fix this in Gfx idle, Bring the GFX clock up
> and set the freq to RPn then move GFx down.
> 
> v2: remove vlv_update_rps_cur_delay function. Update commit message (Daniel)
> 
> v3: Fix the timeout during wait for gfx clock (Jesse)
> 
> v4: addressed comments on set freq and punit wait (Ville)
> 
> v5: use wait_for while waiting for GFX clk to be up. (Daniel)
>     update cur_delay before requesting min_delay. (Ville)
> 
> v6: use wait_for while waiting for punit. (Ville)
> 
> Signed-off-by: Deepak S <deepak.s at intel.com>
> Reviewed-by: Ville Syrjä <ville.syrjala at linux.intel.com>
                          ^^

Stuff missing from my name.

-- 
Ville Syrjälä
Intel OTC