From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kalle Valo Subject: Re: controlling CPU speed on N800/N810 Date: Sat, 04 Apr 2009 11:09:15 +0300 Message-ID: <871vs8vo0k.fsf@litku.valot.fi> References: <8763hkvoi7.fsf@litku.valot.fi> <1238832066.8488.184.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-bw0-f169.google.com ([209.85.218.169]:52049 "EHLO mail-bw0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752974AbZDDIJU (ORCPT ); Sat, 4 Apr 2009 04:09:20 -0400 Received: by bwz17 with SMTP id 17so1231465bwz.37 for ; Sat, 04 Apr 2009 01:09:17 -0700 (PDT) In-Reply-To: <1238832066.8488.184.camel@localhost> (Igor Stoppa's message of "Sat\, 04 Apr 2009 11\:01\:06 +0300") Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: igor.stoppa@nokia.com Cc: "linux-omap@vger.kernel.org" Igor Stoppa writes: > Hi, > On Sat, 2009-04-04 at 09:58 +0200, ext Kalle Valo wrote: > >> Is it possible to change CPU speed in latest linux-omap kernels? > > afaik, no, but that makes your job easier, the ARM clock should be > 330MHz - at least that's what TI supports and recommends when also the > DSP is in use Ok, thanks for the info. I got better wi-fi throughput with nokia 2.6.21 kernel compared to linux-omap kernels, but the CPU speed difference will most likely explain that. I'm assuming that DVFS increased the CPU speed over 400 MHz when running throughtput tests on nokia 2.6.21 kernel. If anyone have hints or pointers how to overclock linux-omap kernels, I'm all ears :) -- Kalle Valo