From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Buettcher Subject: Re: Interl XScale pxa cpufreq driver Date: Mon, 22 Mar 2004 16:13:14 +0100 Sender: cpufreq-bounces@www.linux.org.uk Message-ID: <405F028A.9030004@buettcher.org> References: <120c01c41017$712e04b0$76f02e93@rodin> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <120c01c41017$712e04b0$76f02e93@rodin> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Content-Type: text/plain; charset="us-ascii" To: cpufreq@www.linux.org.uk Young-Jin Kim wrote: > Hi, > I know there is no cpufreq driver which supports XScale PXA processor. There is one. You could have a look at the kernel sources of the ARM Linux project or the Familiar distribution. I worked on a project that involved DVS on a PXA board. At least the frequency scaling part should be freely available. For voltage scaling, we used a proprietary driver. The only problem I encountered was some instability of the USB driver when many frequency changes were done. Stefan