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diff --git a/dts/Bindings/watchdog/atmel-wdt.txt b/dts/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.
+
+Optional properties:
+- timeout-sec: contains the watchdog timeout in seconds.
+- interrupts : Should contain WDT interrupt.
+- atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in
+	seconds. This value should be less or equal to 16. It is used to
+	compute the WDV field.
+- atmel,min-heartbeat-sec : Should contain the minimum heartbeat value in
+	seconds. This value must be smaller than the max-heartbeat-sec value.
+	It is used to compute the WDD field.
+- atmel,watchdog-type : Should be "hardware" or "software". Hardware watchdog
+	use the at91 watchdog reset. Software watchdog use the watchdog
+	interrupt to trigger a software reset.
+- atmel,reset-type : Should be "proc" or "all".
+	"all" : assert peripherals and processor reset signals
+	"proc" : assert the processor reset signal
+	This is valid only when using "hardware" watchdog.
+- atmel,disable : Should be present if you want to disable the watchdog.
+- atmel,idle-halt : Should be present if you want to stop the watchdog when
+	entering idle state.
+- atmel,dbg-halt : Should be present if you want to stop the watchdog when
+	entering debug state.
+
+Example:
+	watchdog@fffffd40 {
+		compatible = "atmel,at91sam9260-wdt";
+		reg = <0xfffffd40 0x10>;
+		interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+		timeout-sec = <15>;
+		atmel,watchdog-type = "hardware";
+		atmel,reset-type = "all";
+		atmel,dbg-halt;
+		atmel,idle-halt;
+		atmel,max-heartbeat-sec = <16>;
+		atmel,min-heartbeat-sec = <0>;
+		status = "okay";
+	};