From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Subject: Re: [PATCH v2 2/2] drivers/watchdog: ASPEED reference dev tree properties for config Date: Wed, 28 Jun 2017 10:52:16 -0700 Message-ID: <20170628175216.GA13730@roeck-us.net> References: <20170627211734.60477-1-cbostic@linux.vnet.ibm.com> <20170627211734.60477-3-cbostic@linux.vnet.ibm.com> <606a2e11-2d43-5204-0bb6-9c4415ee03df@roeck-us.net> <20170628145452.GA30968@roeck-us.net> <38e57720-9728-9377-2a16-adc8ce430ca0@linux.vnet.ibm.com> <20170628150846.GE30968@roeck-us.net> <20170628160649.GB8915@roeck-us.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Christopher Bostic Cc: wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org, linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org On Wed, Jun 28, 2017 at 11:09:15AM -0500, Christopher Bostic wrote: > > >> > >>Why would there even be a need configure for no system reset? The external > >>mode 'wdt ext: External signal enable after timeout' can be sent off chip > >>even if system reset is disabled. The watchdog is doing something in this > >>case and would require wdt instantiation. > >> > >Wouldn't that be "aspeed,external-signal" ? > Yes that optional parameter would need to be specified in that situation, as > well as 'aspeed,no-system-reset'. > Ok, makes sense (after looking into the datasheet). The missing detail is that there is a separate configuration bit for "Reset system after timeout", which is set in addition to reset_{sys,soc,arm}. Thanks, 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