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

[Peter Yin]

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

Signed-off-by: Peter Yin <peteryin.openbmc@xxxxxxxxx>
---
 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