ARM: dts: sam9x60: add rtt

Add RTT.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>

Author: claudiubeznea

arch/arm/boot/dts/at91-sam9x60ek.dts

@@ -623,6 +623,11 @@
 	};
 };
 
+&rtt {
+	atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+	status = "okay";
+};
+
 &shutdown_controller {
 	atmel,shdwc-debouncer = <976>;
 	status = "okay";

arch/arm/boot/dts/sam9x60.dtsi

@@ -735,6 +735,13 @@
 				status = "disabled";
 			};
 
+			rtt: rtt@fffffe20 {
+				compatible = "microchip,sam9x60-rtt", "atmel,at91sam9260-rtt";
+				reg = <0xfffffe20 0x20>;
+				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+				clocks = <&clk32k 0>;
+			};
+
 			pit: timer@fffffe40 {
 				compatible = "atmel,at91sam9260-pit";
 				reg = <0xfffffe40 0x10>;