[Intel-gfx] Why idle_freq is set to RPn and not RPe

[Chris Wilson]

On Wed, Dec 30, 2015 at 09:50:15AM +0000, Szwichtenberg, Radoslaw wrote:
> Hello Chris!
> 
> The question is: why this change in behavior was made? 

To take a defensive position to ensure minimum power consumption.
The GPU is idle, the driver has no work for it to do, it should be power
gated, but on the off-chance that fails pick the lowest power mode we
have available for it to idle in.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre