From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: Re: Power mgmt / CPUFREQ on Via C7 (Esther) Date: Tue, 2 Jan 2007 12:36:01 -0500 Message-ID: <20070102173601.GD7656@redhat.com> References: <5317.195.215.10.251.1167740225.squirrel@195.41.226.86> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <5317.195.215.10.251.1167740225.squirrel@195.41.226.86> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: jorgen@greven.dk Cc: cpufreq@lists.linux.org.uk On Tue, Jan 02, 2007 at 01:17:05PM +0100, jorgen@greven.dk wrote: > 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 -- http://www.codemonkey.org.uk