[PATCH] ARM: dts: at91: sam9x60_curiosity: Add mandatory dt property for RTT

[nicolas.ferre]

From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>

atmel,rtt-rtc-time-reg is a mandatory property and encodes the GPBR
register used to store the time base when the RTT is used as an RTC.
Align the RTT with what's currently done for sam9x60ek and sama7g5ek,
and enable it by default even if RTC is also enabled.

Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>
[nicolas.ferre@xxxxxxxxxxxxx: adapt to newer kernel]
Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
---
 arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
index cb86a3a170ce..83372c1f291b 100644
--- a/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sam9x60_curiosity.dts
@@ -439,6 +439,10 @@ &pwm0 {
 	status = "okay";
 };
 
+&rtt {
+	atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+};
+
 &sdmmc0 {
 	bus-width = <4>;
 	pinctrl-names = "default";
-- 
2.39.2