From owner-freebsd-ppc@FreeBSD.ORG Tue Sep 20 13:33:19 2011 Return-Path: Delivered-To: freebsd-ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A9029106566C for ; Tue, 20 Sep 2011 13:33:19 +0000 (UTC) (envelope-from chmeeedalf@gmail.com) Received: from mail-pz0-f44.google.com (mail-pz0-f44.google.com [209.85.210.44]) by mx1.freebsd.org (Postfix) with ESMTP id 8022A8FC19 for ; Tue, 20 Sep 2011 13:33:19 +0000 (UTC) Received: by pzk36 with SMTP id 36so2933270pzk.3 for ; Tue, 20 Sep 2011 06:33:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; bh=ok8+IvoxNMrTetycKHrfTY72NfTkGWIMxlQm15oz7Fc=; b=S3ZkJaj6hCbD33ET7aSSFVKbOwxi5bCdMrqBlMsplGLAMi5BQHfSsIws9AVuzxg2Ec efXLboWHr4N3B1tpb6jluRPKVzDf23SrYGgYSBEFXMg9aFewfMS1f71kaP+OqIV2n366 I87Cnt7gQxo6DljygXXvQ/IfU7eXGT2M0LR3g= MIME-Version: 1.0 Received: by 10.68.120.134 with SMTP id lc6mr6109232pbb.178.1316525598793; Tue, 20 Sep 2011 06:33:18 -0700 (PDT) Sender: chmeeedalf@gmail.com Received: by 10.142.132.17 with HTTP; Tue, 20 Sep 2011 06:33:18 -0700 (PDT) In-Reply-To: References: <4E78315F.1040404@freebsd.org> Date: Tue, 20 Sep 2011 09:33:18 -0400 X-Google-Sender-Auth: pCGd-gei-0a9SP_u9npqBtxdOf4 Message-ID: From: Justin Hibbits To: FreeBSD PowerPC ML Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Fwd: TiBook CPU speed X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Sep 2011 13:33:19 -0000 D'oh, didn't hit 'Reply All'. ---------- Forwarded message ---------- From: Justin Hibbits Date: Tue, Sep 20, 2011 at 9:32 AM Subject: Re: TiBook CPU speed To: Nathan Whitehorn On Tue, Sep 20, 2011 at 2:23 AM, Nathan Whitehorn wrote: > On 09/20/11 05:07, Justin Hibbits wrote: > >> Following up on my previous email, the saga of installing FreeBSD on a >> TiBook, I ran into another problem: The CPU speed is reduced to 666MHz, >> instead of 1GHz. Is there a way to get it to run at the full 1GHz? >> >> > Just use cpufreq(4) -- the dev.cpu.0.freq sysctl or turn on powerd. > -Nathan > I looked at that first, but the MPC7455 doesn't have frequency scaling. I looked at the Linux and Darwin sources after reading a linux page that you have to explicitly tell it to go full speed, and it turns out it's a PMU command, and requires a CPU reset, and there are two OFW properties under /cpu, min-clock-frequency and max-clock-frequency. - Justin