From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761425AbYDLMnb (ORCPT ); Sat, 12 Apr 2008 08:43:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757786AbYDLMnV (ORCPT ); Sat, 12 Apr 2008 08:43:21 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:4641 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757434AbYDLMnU (ORCPT ); Sat, 12 Apr 2008 08:43:20 -0400 Date: Sat, 12 Apr 2008 14:33:53 +0200 From: Pavel Machek To: Wappler Marcel Cc: linux-kernel@vger.kernel.org Subject: Re: Starting point: Suspend to RAM on embedded devices? Message-ID: <20080412123352.GC4492@ucw.cz> References: <83116F0A4FF67A4F97BA0B6E408C48E301E96208@zuerich.BC-Int.NET> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <83116F0A4FF67A4F97BA0B6E408C48E301E96208@zuerich.BC-Int.NET> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 2008-04-10 10:14:30, Wappler Marcel wrote: > Hi all, > > I am looking for ways to let an ARM9 based embedded device running Linux go to a "suspend to RAM" like mode. In my opinion this > could enable a HIFI equipement like "power-off" and "power-on" feeling with quick response (less than 2 seconds) and much less power > consumption in the standby mode than during normal operation. > > - Is there public available documentation about APM like features on ARM architectures? > - Is there a mainstream Linux platform (best if also ARM9 based) which has achieved this already? Sharp zaurus, olpc, nokia n810... And yes, suspend/resume is quite fast, ~2sec on zaurus, 300msec on olpc. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html