On Fri, Nov 7, 2008 at 8:36 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
Do you mean to say that:
Dynamic = Active
Idle = Idle
Suspend = Low Power State
Resume = Active/Dynamic
If so, what is the difference between suspend and Idle?
Are both the same and what are OFF State/Retention State as well?
Thank you.
Regards,
Reid.
On Fri, 7 Nov 2008, Peter Reid wrote:Dynamic and Idle are two separate terms. Dynamic means that something
> What do the following terms mean in terms of linux power management for
> embedded systems.
>
> 1) Dynamic - Idle
> 2) Suspend-Resume
is running. Idle means that something either isn't running or else is
running but isn't doing anything.
Suspend means to put either a single device or else the entire system
into a non-operational low-power state. Resume means to put the device
or the system back into an operational full-power state.
Do you mean to say that:
Dynamic = Active
Idle = Idle
Suspend = Low Power State
Resume = Active/Dynamic
If so, what is the difference between suspend and Idle?
Are both the same and what are OFF State/Retention State as well?
Thank you.
Regards,
Reid.
Suppose an embedded system has a USB device attached. At times when
> Could you please explain with a scenario of how these states occur in
> real world embedded systems.
the device isn't being used, the system could put it into a low-power
state to conserve energy. When the system needs to use the device, it
would first have to resume the device.
Alan Stern
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