From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Subject: Re: [PATCH v2 1/3] power: reset: read priority from device tree Date: Mon, 1 Dec 2014 09:22:19 -0800 Message-ID: <20141201172219.GA24692@roeck-us.net> References: <1417453389-1588-1-git-send-email-stefan@agner.ch> <1417453389-1588-2-git-send-email-stefan@agner.ch> <20141201171126.GB22708@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20141201171126.GB22708@leverpostej> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mark Rutland Cc: Stefan Agner , "shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" , "kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org" , "arnd-r2nGTMty4D4@public.gmane.org" , "sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , "fkan-qTEPVZfXA3Y@public.gmane.org" , "grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" , "robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , "dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" , "dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org" , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: devicetree@vger.kernel.org On Mon, Dec 01, 2014 at 05:11:26PM +0000, Mark Rutland wrote: > On Mon, Dec 01, 2014 at 05:03:07PM +0000, Stefan Agner wrote: > > This patch adds an optional property which allows to specify the > > reset source priority. This priority is used by the kernel restart > > handler call chain to sort out the proper reset/restart method. > > Depending on the power design of a board or other machine/board > > specific peculiarity, it is not possible to pick a generic priority. > > > > Signed-off-by: Stefan Agner > > --- > > Documentation/devicetree/bindings/power/reset/syscon-reboot.txt | 3 +++ > > drivers/power/reset/syscon-reboot.c | 5 ++++- > > 2 files changed, 7 insertions(+), 1 deletion(-) > > > > diff --git a/Documentation/devicetree/bindings/power/reset/syscon-reboot.txt b/Documentation/devicetree/bindings/power/reset/syscon-reboot.txt > > index 1190631..ee41d9c 100644 > > --- a/Documentation/devicetree/bindings/power/reset/syscon-reboot.txt > > +++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot.txt > > @@ -11,6 +11,9 @@ Required properties: > > - offset: offset in the register map for the reboot register (in bytes) > > - mask: the reset value written to the reboot register (32 bit access) > > > > +Optional properties: > > +- priority: define the priority of the reset (0-255, defaults to 128) > > + > > NAK. This is a leak of Linux-internal details. > > What is this necessary for? > It establishes which restart handler to use if there more than one means to reset the system. See documentation to register_restart_handler() in kernel/reboot.c. Guenter -- 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