From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: [ugly patch] Save .15W-.5W by AHCI powersaving Date: Fri, 21 Mar 2008 08:49:56 +0100 Message-ID: <200803210849.58035.oliver@neukum.org> References: <20080225134558.GA1611@elf.ucw.cz> <47C34081.5090205@rtr.ca> <47C34472.3090706@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <47C34472.3090706@garzik.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: linux-pm@lists.linux-foundation.org Cc: linux-ide@vger.kernel.org, Linux-pm mailing list , kernel list , Jeff Garzik , Mark Lord List-Id: linux-pm@vger.kernel.org Am Montag, 25. Februar 2008 23:42:58 schrieb Jeff Garzik: > > This is cool enough that we really ought to do a hardware-independent > > version, so that all SATA interfaces could benefit. =A0Especially ata_p= iix, > > but others too. > = > BTW we can also save power by allowing the user to choose to disable = > hotplugging support. =A0Then we can power down PHYs that are not in use. Can't we power them up periodically to check for new hardware? Regards Oliver