From mboxrd@z Thu Jan 1 00:00:00 1970 From: javier Martin Subject: Re: cpuidle status in mainline for Beagleboard xM Date: Fri, 2 Sep 2011 09:23:52 +0200 Message-ID: References: <87vctcjo2w.fsf@ti.com> <87ei00f94i.fsf@ti.com> <4E607241.8000704@bitmer.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from mail-yi0-f46.google.com ([209.85.218.46]:40680 "EHLO mail-yi0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755718Ab1IBHXx (ORCPT ); Fri, 2 Sep 2011 03:23:53 -0400 Received: by yie30 with SMTP id 30so1998507yie.19 for ; Fri, 02 Sep 2011 00:23:53 -0700 (PDT) In-Reply-To: <4E607241.8000704@bitmer.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Jarkko Nikula Cc: Kevin Hilman , linux-omap@vger.kernel.org, Koen Kooi On 2 September 2011 08:05, Jarkko Nikula wrote: > Other usual things to check that display is off (echo 1 > > /sys/class/graphics/fb0/blank) and no cable to musb/otg port. > > Haven't tried myself with recent kernel but does EHCI and hub on XM let to > idle cpu at all? At least on one board having on-board hub I had to disable > or unload ehci module in order to hit the retention. > I've checked that too and I've even disabled USB support in the kernel just to be sure. But still nothing: root@beagleboard:~# powertop -d -t 100 PowerTOP 1.12 (C) 2007, 2008 Intel Corporation Collecting data for 100 seconds Cn Avg residency C0 (cpu running) ( 0.0%) C0 58.5ms (100.0%) C1 0.0ms ( 0.0%) C2 0.0ms ( 0.0%) C3 0.0ms ( 0.0%) C4 0.0ms ( 0.0%) C5 0.0ms ( 0.0%) C6 0.0ms ( 0.0%) Even when CPU has been idle 100% of the time it doesn't hit any state deeper than C0. -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com