linux/Documentation/devicetree/bindings/watchdog/sun4i-wdt.txt
<<
>>
Prefs
   1Allwinner sun4i Watchdog timer
   2
   3Required properties:
   4
   5- compatible : should be "allwinner,sun4i-wdt"
   6- reg : Specifies base physical address and size of the registers.
   7
   8Example:
   9
  10wdt: watchdog@01c20c90 {
  11        compatible = "allwinner,sun4i-wdt";
  12        reg = <0x01c20c90 0x10>;
  13};
  14