Geert Uytterhoeven [off-list ref] writes:

PM QoS device start/stop and save/restore state latencies are more or
less properties of the hardware.
In legacy code, they're specified from platform code.
On DT platforms, their values should come from DT.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Should these properties be called "linux,*-latency"?

Hmm, the start/stop latencies are clearly properties of the hardware,
but the save/restore latencies seem to be a function of the driver.
e.g., some drivers may keep a shadow copy of their registers in memory
so the save time is minimized.

I don't have too strong of an opinion on this, but probably the drivers
should just add their own values to the start/stop latencies to add the
linux specific overhead.

Kevin