From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from jdl.com (www.jdl.com [66.118.10.122]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 8381A67B19 for ; Sat, 24 Jun 2006 00:27:02 +1000 (EST) To: matt@genesi-usa.com Subject: Re: cpu power "management" for non-dfs chips with no pmu (for instance, 750cxe and mpc7447 in pegasos) In-Reply-To: Your message of "Fri, 23 Jun 2006 08:58:56 CDT." <01ca01c696cd$2e453f30$99dfdfdf@bakuhatsu.net> References: <01ca01c696cd$2e453f30$99dfdfdf@bakuhatsu.net> Date: Fri, 23 Jun 2006 09:26:57 -0500 From: Jon Loeliger Message-Id: Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , So, like, the other day "Matt Sealey" mumbled: > > I have nothing real to contribute other than I would like to see it :) Disbelief. :-) > Before I asked I checked Google (as is expected of anyone these days) > and found some discussions on debian-powerpc from 2002 but nobody > really did anything and nothing really came of it. I know 4 years later > all we have is powernowd which pokes up cpufreq which only supports > DFS and certain kinds of Mac PMU. Which is why it is all being revitalized now... :-) There was a mini symposium a couple months ago that started a few working groups to help kick start this back into viability. > ICTC is such a simple thing to support and you can slow down the CPU > pretty comprehensively (from halving to 255x in theory) with an on and > off flag. I am surprised nobody implemented a cpufreq governer even if > it is totally useless and gives no perceivable benefits.. See? You _are_ contributing already. I encourage you to hit the linux-pm@lists.osdl.org list for a spell! You could start here: https://lists.osdl.org/mailman/listinfo/linux-pm Thanks, jdl