Re: community PM requirements/issues and PowerOP [Was: Re: So, what's the status on the recent patches here?]

Amit Kucheria
2006-09-17T14:14:57Z

(Modified recipient list)

On Sun, 2006-09-17 at 15:40 +0200, ext Pavel Machek wrote:
> On Sun 2006-09-17 16:28:23, Amit Kucheria wrote:
> > On Sun, 2006-09-17 at 15:18 +0200, ext Pavel Machek wrote:
> > >
> > > > > Well, for now, Nokia 770 is zaurus with wifi but without keyboard
> > > > > (mostly). It seems to be very similar to zaurus pm-wise.
> > > >
> > > > You have conveniently chosen to forget that Nokia 770 does not support
> > > > suspend-to-disk - it is a S-T-R device. In fact, personally I agree with
> > > > Linus' comments elsewhere about S-T-D being irrelevant.
> > >
> > > Now I do not understand... this was power savings debate, no? Zaurus
> > > basically does not support S-T-D either (or at least I do not use it
> > > there), and I agree that S-T-D is irrelevant in the long term. And it
> > > is hardly relevant for non-PC machines _now_.
> >
> > I was referring to the default method of power save on Zaurus on the
> > Sharp ROMs. It was S-T-D (Flash), IIRC. I do not recall drivers doing
> > runtime power management on Zaurus; that is a major difference from
> > Nokia 770.
>
> I'm pretty sure Zauruses do s-t-ram. Flash is read only during normal
> operation.
>
> I'm very sure Sharp zaurus sl-5500 does s-t-ram. After all, it has
> 16MB of flash and 64MB of ram. Suspend-to-flash is not an option.
>
> Pavel

If that is the case, I stand corrected. Did the drivers support dynamic
idling?

Although something about the time it took to resume still bothers me....
I will try to find time to flash it and check.

--
Amit Kucheria <amit.kucheria@nokia.com>
Nokia