From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: [PATCH] AHCI powersaving and port-stopping (2.6.22-rc4) Date: Mon, 11 Jun 2007 07:05:38 -0700 Message-ID: <466D56B2.5080109@linux.intel.com> References: <873b0yvk14.fsf-genuine-vii@john.fremlin.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga07.intel.com ([143.182.124.22]:25484 "EHLO azsmga101.ch.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751829AbXFKOHO (ORCPT ); Mon, 11 Jun 2007 10:07:14 -0400 In-Reply-To: <873b0yvk14.fsf-genuine-vii@john.fremlin.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: John Fremlin Cc: linux-ide@vger.kernel.org, power@bughost.org > This is very different from the patch I posted a while ago turning on > a few bits in the CMD register (ALPE and ASP) and which Intel is we've not seen a patch that actually works in this area unfortunately. We know Kristen's patch does work > apparently now trying. That only saves around 250mW. Tejun's patch .. and saves close to a watt on a laptop in our measurements the patch is available on http://www.kernel.org/pub/linux/kernel/people/kristen/patches/SATA/alpm/ maybe worth a try as well..