From: "Rafał Bilski" <rafalbilski@interia.pl>
To: Dave Jones <davej@redhat.com>
Cc: cpufreq@lists.linux.org.uk
Subject: Re: Power mgmt / CPUFREQ on Via C7 (Esther)
Date: Tue, 02 Jan 2007 19:18:33 +0100 [thread overview]
Message-ID: <459AA1F9.3040701@interia.pl> (raw)
In-Reply-To: <20070102173601.GD7656@redhat.com>
> > Hi
> >
> > I have just bought a nice little sbc mainboard with a Via C7 cpu. It run
> > Centos with stock kernel 2.6.19.1 that I downloaded and installed a few
> > days ago.
> > But cpufreq does not work.
> >
> > Can I in some way help with testing/debugging the cpufreq driver (centrino
> > or longhaul?) for this cpu?
>
> The C7 works fine with acpi-cpufreq if the correct BIOS tables are present.
> Support *could* be added to speedstep-centrino to use hardcoded tables
> for these CPUs for systems where the BIOSes lack them, but hasn't been
> done yet.
>
> Given speedstep-centrino is due to be obsoleted by acpi-cpufreq at some stage,
> the feature of using hardcoded tables probably needs to be added to
> acpi-cpufreq at some point too.
>
> Dave
>
Beauty of "Enhanced PowerSaver" is in that hardcoded tables are not necessary.
Would be very easy to add ACPI independent driver for these CPU's. If somebody
would test it then I can try.
What do You think?
Rafa³
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next prev parent reply other threads:[~2007-01-02 18:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-02 12:17 Power mgmt / CPUFREQ on Via C7 (Esther) jorgen
2007-01-02 17:36 ` Dave Jones
2007-01-02 18:18 ` Rafał Bilski [this message]
2007-01-02 23:19 ` Dave Jones
2007-01-03 23:10 ` Jorgen
2007-01-02 18:55 ` Len Brown
2007-01-04 12:37 ` Jorgen
-- strict thread matches above, loose matches on Subject: below --
2007-01-02 22:16 jorgen
2007-01-02 22:27 ` Dave Jones
2007-01-03 10:22 jorgen
2007-01-03 20:41 ` Len Brown
2007-01-04 10:06 jorgen
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