linux-kernel - [PATCH v4 3/4] dt-bindings: watchdog: aspeed-wdt: Add aspeed,scu

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Message-Id: <20240327085330.3281697-4-peteryin.openbmc@gmail.com>
Date: Wed, 27 Mar 2024 16:53:29 +0800
From: Peter Yin <peteryin.openbmc@...il.com>
To: patrick@...cx.xyz,
	Wim Van Sebroeck <wim@...ux-watchdog.org>,
	Guenter Roeck <linux@...ck-us.net>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	linux-watchdog@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/4] dt-bindings: watchdog: aspeed-wdt: Add aspeed,scu

To use the SCU register to obtain reset flags for supporting
bootstatus.

Signed-off-by: Peter Yin <peteryin.openbmc@...il.com>
---
 Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
index 3208adb3e52e..80a1f58b5a2e 100644
--- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
@@ -8,6 +8,8 @@ Required properties:
 
  - reg: physical base address of the controller and length of memory mapped
    region
+ - aspeed,scu: a reference to the System Control Unit node of the Aspeed
+   SOC.
 
 Optional properties:
 
@@ -62,6 +64,7 @@ Examples:
 		reg = <0x1e785000 0x1c>;
 		aspeed,reset-type = "system";
 		aspeed,external-signal;
+		aspeed,scu = <&syscon>;
 	};
 
 	#include <dt-bindings/watchdog/aspeed-wdt.h>
@@ -70,4 +73,5 @@ Examples:
 		reg = <0x1e785040 0x40>;
 		aspeed,reset-mask = <AST2600_WDT_RESET1_DEFAULT
 				     (AST2600_WDT_RESET2_DEFAULT & ~AST2600_WDT_RESET2_LPC)>;
+		aspeed,scu = <&syscon>;
 	};
-- 
2.25.1