From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [REPOST RFC PATCH 0/3] New "gpio-poweroff" driver to turn off platform devices with GPIOs Date: Tue, 20 Dec 2011 01:38:20 +0000 Message-ID: <20111220013819.GV2860@opensource.wolfsonmicro.com> References: <1323800614-12642-1-git-send-email-Kyle.D.Moffett@boeing.com> <4EE7A31E.7080301@gmail.com> <895CF182-4BF7-4DF5-A467-944EC008DBC3@boeing.com> <20111214120240.GC25088@sirena.org.uk> <20111217092044.GC2833@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org To: "Moffett, Kyle D" Cc: "devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Liam Girdwood List-Id: devicetree@vger.kernel.org On Mon, Dec 19, 2011 at 10:56:41AM -0600, Moffett, Kyle D wrote: > I still don't understand how the regulator API is supposed to help in my > particular case (whole-system poweroff). Well, it depends what you need to do. In the ST-Ericsson case what they needed to do was collapse the core supplies for the CPU. But previously you were talking about power domains, not whole system poweroff. Usually a power domain is a subset of the full system power.