[PATCH 3/4] ARM: at91/dt: enable the RTT block on the sam9g20ek board

[Boris Brezillon]

Enable the RTT and GPBR devices and specify the general purpose register
used to store the current time.

Enable wakeup on RTT event on the shutdown controller device.

Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
 arch/arm/boot/dts/at91sam9g20ek_common.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
index d291910..dfaacb1 100644
--- a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
@@ -112,9 +112,23 @@
 				};
 			};
 
+			shdwc at fffffd10 {
+				atmel,wakeup-counter = <10>;
+				atmel,wakeup-rtt-timer;
+			};
+
+			rtc at fffffd20 {
+				atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+				status = "okay";
+			};
+
 			watchdog at fffffd40 {
 				status = "okay";
 			};
+
+			gpbr: syscon at fffffd50 {
+				status = "okay";
+			};
 		};
 
 		nand0: nand at 40000000 {
-- 
1.9.1