diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
new file mode 100644
index 000000000000..2957ebb5aa71
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
@@ -0,0 +1,15 @@
+* 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>;
+	};
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index d410581a5a85..bfb5bb6528b5 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -246,6 +246,12 @@
 					trigger-external;
 				};
 			};
+
+			watchdog@fffffd40 {
+				compatible = "atmel,at91sam9260-wdt";
+				reg = <0xfffffd40 0x10>;
+				status = "disabled";
+			};
 		};
 
 		nand0: nand@40000000 {
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 3e6e5c1abbf3..ff5461278c03 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -195,6 +195,12 @@
 				#size-cells = <0>;
 				status = "disabled";
 			};
+
+			watchdog@fffffd40 {
+				compatible = "atmel,at91sam9260-wdt";
+				reg = <0xfffffd40 0x10>;
+				status = "disabled";
+			};
 		};
 
 		nand0: nand@40000000 {
diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
index 3add030d61f8..a98c00a234eb 100644
--- a/arch/arm/boot/dts/at91sam9g45.dtsi
+++ b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -262,6 +262,12 @@
 					trigger-value = <0x6>;
 				};
 			};
+
+			watchdog@fffffd40 {
+				compatible = "atmel,at91sam9260-wdt";
+				reg = <0xfffffd40 0x10>;
+				status = "disabled";
+			};
 		};
 
 		nand0: nand@40000000 {
diff --git a/arch/arm/boot/dts/evk-pro3.dts b/arch/arm/boot/dts/evk-pro3.dts
index b7354e6506de..96e50f569433 100644
--- a/arch/arm/boot/dts/evk-pro3.dts
+++ b/arch/arm/boot/dts/evk-pro3.dts
@@ -22,10 +22,22 @@
 				status = "okay";
 			};
 
+			usart0: serial@fffb0000 {
+				status = "okay";
+			};
+
+			usart2: serial@fffb8000 {
+				status = "okay";
+			};
+
 			usb1: gadget@fffa4000 {
 				atmel,vbus-gpio = <&pioC 5 0>;
 				status = "okay";
 			};
+
+			watchdog@fffffd40 {
+				status = "okay";
+			};
 		};
 
 		usb0: ohci@00500000 {
diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c
index 05e1be85fdee..dc42e44b6bc1 100644
--- a/drivers/watchdog/at91sam9_wdt.c
+++ b/drivers/watchdog/at91sam9_wdt.c
@@ -32,6 +32,7 @@
 #include <linux/timer.h>
 #include <linux/bitops.h>
 #include <linux/uaccess.h>
+#include <linux/of.h>
 
 #include "at91sam9_wdt.h"
 
@@ -302,11 +303,21 @@ static int __exit at91wdt_remove(struct platform_device *pdev)
 	return res;
 }
 
+#if defined(CONFIG_OF)
+static const struct of_device_id at91_wdt_dt_ids[] __initconst = {
+	{ .compatible = "atmel,at91sam9260-wdt" },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, at91_wdt_dt_ids);
+#endif
+
 static struct platform_driver at91wdt_driver = {
 	.remove		= __exit_p(at91wdt_remove),
 	.driver		= {
 		.name	= "at91_wdt",
 		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(at91_wdt_dt_ids),
 	},
 };