[Intel-gfx] Question about PSR training and idle frames

[Siva Chandra]

Hi,

I would like to know what "training" and "idle frames" mean wrt PSR. I
apologize if this is the wrong list for such questions.

I am looking at the i915 driver in 3.10 which sets idle_frames to 1
(function intel_edp_psr_enable_source in intel_dp.c) when enabling
PSR. What does this mean, and what should one observe if idle_frames
is set to a higher number?

Thanks,
Siva Chandra