Why idle_freq is set to RPn and not RPe

Kamble, Sagar A
2015-12-30T09:21:32Z

Hi Chris,

With below commit, idle frequency is made RPn (HW Min).
Why are we not keeping it at RPe (Efficient Frequency)?
My understanding was to set Rpe on idle so that when GPU is out of RC6
it can start operating at efficient frequency.

commit aed242ff7ebb697e4dff912bd4dc7ec7192f7581
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed Mar 18 09:48:21 2015 +0000

drm/i915: Relax RPS contraints to allows setting minfreq on idle

Thanks
Sagar