From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Francesco Lattanzio <franz.lattanzio@gmail.com>
Cc: Linux ACPI <linux-acpi@vger.kernel.org>
Subject: Re: FSB scaling for ASUS EeePC 1000H
Date: Sun, 15 Mar 2009 19:05:59 +0000 [thread overview]
Message-ID: <20090315190557.GA4324@srcf.ucam.org> (raw)
In-Reply-To: <49BD1843.7050502@gmail.com>
On Sun, Mar 15, 2009 at 04:01:23PM +0100, Francesco Lattanzio wrote:
> The following patch (against the current "linux-acpi-2.6" source tree)
> adds the capability of the ASUS EeePC 1000H (and maybe other models as
> well) to scale the FSB frequency and core voltage. Do not confuse this
> with cpufreq (SpeedStep and other similar mechanisms): cpufreq changes
> the internal CPU clock multiplier (and eventually the core voltage too)
> leaving the FSB frequency untouched.
No, there's no requirement that cpufreq be limited to clock-multiplier
based methods. It's the right interfae to use for CPU speed control.
(snip patch)
Is this different to the cpufreq driver suggested at
http://lkml.org/lkml/2008/11/23/115 , other than the latter having
hardcoded speed values?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2009-03-15 19:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-15 15:01 FSB scaling for ASUS EeePC 1000H Francesco Lattanzio
2009-03-15 19:05 ` Matthew Garrett [this message]
2009-03-17 8:26 ` Francesco Lattanzio
2009-03-17 11:34 ` Matthew Garrett
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