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diff --git a/Documentation/devicetree/bindings/watchdog/sirfsoc_wdt.txt b/Documentation/devicetree/bindings/watchdog/sirfsoc_wdt.txt
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+SiRFSoC Timer and Watchdog Timer(WDT) Controller
+
+Required properties:
+- compatible: "sirf,prima2-tick"
+- reg: Address range of tick timer/WDT register set
+- interrupts: interrupt number to the cpu
+
+Example:
+
+timer@b0020000 {
+        compatible = "sirf,prima2-tick";
+        reg = <0xb0020000 0x1000>;
+        interrupts = <0>;
+};