From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sascha Hauer Subject: Re: [PATCH v2 1/3] ARM: dts: imx6: add pm_power_off support for i.mx6 chips Date: Wed, 17 Sep 2014 08:06:49 +0200 Message-ID: <20140917060649.GJ4992@pengutronix.de> References: <1410511739-31122-1-git-send-email-b38343@freescale.com> <1410511739-31122-2-git-send-email-b38343@freescale.com> <20140917021044.GD4796@dragon> <20140917034514.GF27452@Robin-OptiPlex-780> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20140917034514.GF27452@Robin-OptiPlex-780> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Robin Gong Cc: Shawn Guo , robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org On Wed, Sep 17, 2014 at 11:45:15AM +0800, Robin Gong wrote: > On Wed, Sep 17, 2014 at 10:10:45AM +0800, Shawn Guo wrote: > > On Fri, Sep 12, 2014 at 04:48:57PM +0800, Robin Gong wrote: > > > All chips of i.mx6 can be powered off by programming SNVS. > > > For example : > > > On i.mx6q-sabresd board, PMIC_ON_REQ connect with external > > > pmic ON/OFF pin, that will cause the whole PMIC powered off > > > except VSNVS. And system can restart once PMIC_ON_REQ goes > > > high by push POWRER key. > > > > What's the behavior for those boards on which PMIC_ON_REQ isn't > > connected to anywhere? > > > System can't be powered off if not connect PMIC_ON_REQ. Although all of our > reference design for i.mx6 chips are connecting PMIC_ON_REQ with external > PMIC, we need consider others may not use external PMIC. I'll add the info > into commit log or Kconfig. You should add the information to the dtsi file in form of a status = "disabled" property so that boards that actually have the feature can enable it. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html