Sorry for having been lazy in commenting..
From: Lorenzo Pieralisi <[email protected]>
Date: Tue, 18 Feb 2014 11:47:31 +0000
> + - min-residency
> + Usage: Required
> + Value type: <prop-encoded-array>
> + Definition: u32 value representing time in microseconds
> + required for the CPU to be in the idle state to
> + break even in power consumption terms compared
> + to idle state idle_standby ([4][5]).
To me this continues to be a bit illdefined. Say we have three states:
0,1,2. State 0 is the idle_standby. Providing a minimum residency for
state 1 compared to state 0 sort of makes sense, but if we provide a
minimum residency for state 2 compared to state 0 the break even time
is going to be smaller than break even when comparing state 1 and
state 2. With this data we'd enter state 2 when we'd be better off
entering state 1.
--Antti
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
