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diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
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+++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
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+* Atmel Watchdog Timers
+
+** at91sam9-wdt
+
+Required properties:
+- compatible: must be "atmel,at91sam9260-wdt".
+- reg: physical base address of the controller and length of memory mapped
+  region.
+
+Example:
+
+        watchdog@fffffd40 {
+                compatible = "atmel,at91sam9260-wdt";
+                reg = <0xfffffd40 0x10>;
+        };