Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932109AbaLARXo (ORCPT ); Mon, 1 Dec 2014 12:23:44 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:55860 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752926AbaLARXm (ORCPT ); Mon, 1 Dec 2014 12:23:42 -0500 Date: Mon, 1 Dec 2014 09:22:19 -0800 From: Guenter Roeck To: Mark Rutland Cc: Stefan Agner , "shawn.guo@linaro.org" , "kernel@pengutronix.de" , "arnd@arndb.de" , "sre@kernel.org" , "fkan@apm.com" , "grant.likely@linaro.org" , "robh+dt@kernel.org" , "dbaryshkov@gmail.com" , "dwmw2@infradead.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v2 1/3] power: reset: read priority from device tree 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 Content-Disposition: inline In-Reply-To: <20141201171126.GB22708@leverpostej> User-Agent: Mutt/1.5.21 (2010-09-15) X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020209.547CA41E.01E2,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 14 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/