From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dominik Brodowski Subject: FRV and CPU frequency scaling Date: Tue, 2 Nov 2004 13:35:09 +0100 Message-ID: <20041102123509.GA8259@dominikbrodowski.de> Mime-Version: 1.0 Return-path: Content-Disposition: inline List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@www.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: dhowells@redhat.com Cc: davej@redhat.com, uclinux-dev@uclinux.org, cpufreq@www.linux.org.uk, linux-kernel@vger.kernel.org While reading through the FRV Documentation patch I stumbled across the file "clock.txt" file which says: + (*) clock.txt + + A description of the CPU clock scaling interface. + Could you use the generic cpufreq core (drivers/cpufreq/) for this, please? And could you explain the difference between p0, cm and cmode settings to me, and how they can be combined, please? Or is the following assumption correct? The CPU core frequency can only be modified on FR405 CPUs, while p0 and cm are available on all CPUs and allow for modification of the frequency of some sort of external busses. Thanks, Dominik From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261220AbUKBMfy (ORCPT ); Tue, 2 Nov 2004 07:35:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261219AbUKBMfy (ORCPT ); Tue, 2 Nov 2004 07:35:54 -0500 Received: from natnoddy.rzone.de ([81.169.145.166]:17562 "EHLO natnoddy.rzone.de") by vger.kernel.org with ESMTP id S261220AbUKBMfq (ORCPT ); Tue, 2 Nov 2004 07:35:46 -0500 Date: Tue, 2 Nov 2004 13:35:09 +0100 From: Dominik Brodowski To: dhowells@redhat.com Cc: cpufreq@www.linux.org.uk, davej@redhat.com, linux-kernel@vger.kernel.org, uclinux-dev@uclinux.org Subject: FRV and CPU frequency scaling Message-ID: <20041102123509.GA8259@dominikbrodowski.de> Mail-Followup-To: dhowells@redhat.com, cpufreq@www.linux.org.uk, davej@redhat.com, linux-kernel@vger.kernel.org, uclinux-dev@uclinux.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org While reading through the FRV Documentation patch I stumbled across the file "clock.txt" file which says: + (*) clock.txt + + A description of the CPU clock scaling interface. + Could you use the generic cpufreq core (drivers/cpufreq/) for this, please? And could you explain the difference between p0, cm and cmode settings to me, and how they can be combined, please? Or is the following assumption correct? The CPU core frequency can only be modified on FR405 CPUs, while p0 and cm are available on all CPUs and allow for modification of the frequency of some sort of external busses. Thanks, Dominik