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[ts-7000] Re: Changing the CPU speed on a TS-7620 under Linux Kernel 2.4

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Subject: [ts-7000] Re: Changing the CPU speed on a TS-7620 under Linux Kernel 2.4.26-ts11?
From: "Kym Newbery" <>
Date: Thu, 21 Sep 2006 01:39:38 -0000
Hi - Sorry for repeating a previous question!.. my initial searches
obviously didn't have the correct search terms.. 

Thanks for the helpfull info.

Cheers
Kym

--- In  Bob Lees <> wrote:
>
> I would echo Jim's comments.
> 
> See the patch to -ts8 we posted about a year ago.  This has a
cpufreq driver 
> with some predefined frequencies in it.  I gather from another post
to this 
> list that this won't apply cleanly to ts11, so you may have to make
some 
> handrolic adjustments; or try applying just the cpufreq part.
> 
> Bob
> 
> On Wednesday 20 September 2006 14:18, Jim Jackson wrote:
> > On Wed, 20 Sep 2006, Kym Newbery wrote:
> > > Hi,
> > >
> > > In the Technologix datasheets there is talk of 'lowering the cpu
speed
> > > for lower power consumption', but when I've gone looking I can't
find
> > > any kernel interface/feature to control this.  I am using a
TS7620.  I
> > > figure I could do it by pokeing around in the cpu specific control
> > > registers, but I wondered if there is already an exposed
interface, eg
> > > in  /proc/cpu with which I can tweak the cpu speed?.
> >
> > This keeps cropping up. Here's a repeat of a pointer to previous
emails on
> > this list......
> >
> > Deja view?
> >
> > On Wed, 1 Mar 2006, joel garner wrote:
> > >   The manual mentions that the processor clock is dynamically
adjustable
> > > from 0 to 200 MHZ but doesn't mention how... can anyone please
help me
> > > out...
> >
> > This question was asked about a week ago in the exact same words
by Anand
> > Bhavnani, see.....
> >
> >   http://groups.yahoo.com/group/ts-7000/message/2143
> >
> > I sent a reply, see.....
> >
> >   http://groups.yahoo.com/group/ts-7000/message/2144
> >
> > Together with the ep9301/2 user manual from Cirrus, and the source of
> > either my user space cctl program, or the cpufreq patches you
should see
> > how to configure the fairly complicated clocks on the processor.
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> 
> -- 
> V +44 (0) 1296 747667
> F +44 (0) 1296 747557
> C +44 (0) 7860 406093
> 
> Diamond Consulting Services Ltd
> Dinton
> Aylesbury
> Bucks, HP17 8UG
> England
>










 
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