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Date: Tue, 25 Feb 2003 20:09:50 +0100
From: Pavel Machek <pavel@suse.cz>
To: Dominik Brodowski <linux@brodo.de>
Cc: cpufreq@www.linux.org.uk, kernel list <linux-kernel@vger.kernel.org>
Subject: Re: cpufreq: allow user to specify voltage
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References: <20030224225545.GA16991@elf.ucw.cz> <20030225004126.GA2477@brodo.de> <20030225180311.GI12028@atrey.karlin.mff.cuni.cz> <20030225182414.GA3242@brodo.de>
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Hi!

> > But I agree that hacking proc_intf is not the right thing to do. I did
> > not see that sysfs access. Where is it?
> 
> kernel/cpufreq.c

Okay, I see.

> > > - selecting the voltage manually is something which is only valid for some
> > >   very few drivers - so let's only export one sysfs file[*] for these
> > >   drivers.
> > 
> > Very few drivers? It should be common for at least Intel and AMD, no?
> No. Intel doesn't let you select the exact voltage. IIRC, only vew 
> VIA/Cyrix-longhaul-capable processors and, of course, powernow-k7 are vaild
> targets for such a patch.

So I guess adding /sys/bus/system/devices/cpu0/voltage? Should code to
do that be in kernel/cpufreq.c or is it possible to do sysfs from
powernow-k7 [it does not seem easy]?
								Pavel
-- 
Horseback riding is like software...
...vgf orggre jura vgf serr.
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