From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Machek <pavel@ucw.cz>
Subject: Re: nokia 770 [was Re: community PM requirements/issues
	and PowerOP]
Date: Wed, 13 Dec 2006 22:03:59 +0100
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	<1158583334.28629.19.camel@localhost>
	<20060919182523.GE7099@elf.ucw.cz>
	<200612121200.18513.david-b@pacbell.net>
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To: "Eugeny S. Mints" <eugeny.mints@gmail.com>
Cc: linux-pm@lists.osdl.org, matthew.a.locke@comcast.net, scott.preece@motorola.com, Amit Kucheria <amit.kucheria@nokia.com>
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On Wed 2006-12-13 15:12:07, Eugeny S. Mints wrote:
> David Brownell wrote:
> > On Tuesday 19 September 2006 11:25 am, Pavel Machek wrote:
> >> Could you perhaps provide list of operating points for 770? It would
> >> help understanding a bit, I'd say.
> > =

> > If there was a followup here, I missed it ...
> > =

> > ISTR that it doesn't use (formal) operating points, and that a lot of t=
he
> > basic SOC power savings (vs powering off the display or wifi) come from=
 a
> > different kind of mechanism entirely.  Namely, a combination of dynamic
> > tick with a modified system idle task, which enters one of the OMAP low
> > power modes during those long periods between clock ticks or other irqs.
> > =

> > That's one of the standard power saving schemes used on OMAP1 platforms
> > with Linux.

> sample of reasonable operating points for OMAP1 platforms along with appr=
opriate =

> patches may be found at http://dynamicpower.sourceforge.net/dpm-omap.html

Okay... so you have system with 4 different cpu speeds. That should be
simple enough to get running using cpufreq, no need for complex
operating points patches.
								Pavel
-- =

(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html