Re: Why idle_freq is set to RPn and not RPe

Chris Wilson
2015-12-30T10:01:03Z

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