From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 5/8] omap_hsmmc: RX51: set padconfs to pull down when powering off eMMC Date: Wed, 13 Jan 2010 13:00:42 -0800 Message-ID: <20100113210042.GM2986@atomide.com> References: <20100113114010.7615.84920.sendpatchset@ahunter-work.research.nokia.com> <20100113114048.7615.51097.sendpatchset@ahunter-work.research.nokia.com> <20100113203745.GK2986@atomide.com> <20100113203958.GL2986@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20100113203958.GL2986@atomide.com> Sender: linux-mmc-owner@vger.kernel.org To: Adrian Hunter Cc: linux-mmc Mailing List , Andrew Morton , linux-omap Mailing List , Madhusudhan Chikkature List-Id: linux-omap@vger.kernel.org * Tony Lindgren [100113 12:38]: > * Tony Lindgren [100113 12:36]: > > > > You might want to check what happens in omap off-idle mode in these cases > > and see if enabling OMAP_PIN_OFF_INPUT_PULLDOWN makes any difference in > > power consumption in off state. That probably does not matter unless the > > floating lines cause the eMMC to do something on it's own :) > > Or OMAP_PIN_OFF_OUTPUT_LOW actually. One more time.. Most likely OMAP_PIN_OFF_INPUT_PULLDOWN is safer in general as the OMAP_PIN_OFF_OUTPUT_LOW does not work for all pins. According to the TRM, OMAP_PIN_OFF_OUTPUT_LOW only works for pins where at least one of the mux modes supports output mode. Regards, Tony