From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ohad Ben-Cohen Subject: Re: MMC runtime PM patches break libertas probe Date: Wed, 17 Nov 2010 09:29:16 +0200 Message-ID: References: <4CE37A54.20509@compulab.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:64558 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933423Ab0KQH3o (ORCPT ); Wed, 17 Nov 2010 02:29:44 -0500 Received: by iwn35 with SMTP id 35so1790868iwn.19 for ; Tue, 16 Nov 2010 23:29:44 -0800 (PST) In-Reply-To: <4CE37A54.20509@compulab.co.il> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Mike Rapoport Cc: Daniel Drake , Arnd Hannemann , Chris Ball , linux-mmc@vger.kernel.org, Nicolas Pitre , libertas-dev@lists.infradead.org On Wed, Nov 17, 2010 at 8:46 AM, Mike Rapoport wrote: > On our platforms we just keep it powered on after boot with the reset line held > high. (e.g. arch/arm/mach-pxa/cm-x300.c, arch/arm/mach-omap/board-cm-t35.c). > We don't bother much for power savings, though. Thanks, Mike ! This paves the road for MMC_CAP_POWER_OFF_CARD. SDIO core will enable runtime PM for the card only if that cap is set. As a result, the card will be powered down after boot, and will only be powered up again when a driver is loaded (and then it's up to the driver whether power will be kept or not).