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

Chris Wilson chris at chris-wilson.co.uk
Wed Dec 30 02:00:55 PST 2015

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 Wilson, Intel Open Source Technology Centre

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