From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Jeffery Subject: [PATCH 1/2] dt-bindings: watchdog: aspeed: External reset signal properties Date: Wed, 2 Aug 2017 14:15:28 +0930 Message-ID: <20170802044529.30032-2-andrew@aj.id.au> References: <20170802044529.30032-1-andrew@aj.id.au> Return-path: In-Reply-To: <20170802044529.30032-1-andrew-zrmu5oMJ5Fs@public.gmane.org> Sender: linux-watchdog-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Andrew Jeffery , wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org, linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-aspeed-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, openbmc-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org List-Id: devicetree@vger.kernel.org For the AST2500 and compatible watchdog controllers the external reset signal can be configured for push-pull or open-drain drive types, and in the case of push-pull driving, active low or high. Signed-off-by: Andrew Jeffery --- Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt index 2b34ce9b60b9..c5077a1f5cb3 100644 --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt @@ -33,10 +33,18 @@ Optional properties: - none: No reset is performed on timeout. Assumes another watchdog engine is responsible for this. + - aspeed,alt-boot: If property is present then boot from alternate block. - aspeed,external-signal: If property is present then signal is sent to external reset counter (only WDT1 and WDT2). If not specified no external signal is sent. - - aspeed,alt-boot: If property is present then boot from alternate block. + - aspeed,ext-pulse-duration: External signal pulse duration in microseconds + +Optional properties for AST2500-compatible watchdogs: + - aspeed,ext-push-pull: If aspeed,external-signal is present, set the pin's + drive type to push-pull. The default is open-drain. + - aspeed,ext-active-high: If aspeed,external-signal is present and and the pin + is configured as push-pull, then set the pulse + polarity to active-high. The default is active-low. Example: -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html