[PATCH v2] arm64: dts: renesas: r8a779a0: falcon-cpu: Add SW47-SW49 support

[Kieran Bingham]

Add support for SW47, SW48 and SW49 via "gpio-keys" on the R-Car V3U
Falcon board.

Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx>

---
Apologies, I sent out v1 with locally staged changes that didn't get sqaushed
in.

v2:
 - add wakeup-source to key-1
 - make line ordering consistent across each key

 .../boot/dts/renesas/r8a779a0-falcon-cpu.dtsi | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
index a0a1a1da0d87..d595fbad4589 100644
--- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
@@ -6,6 +6,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/leds/common.h>
 
 #include "r8a779a0.dtsi"
@@ -45,6 +46,37 @@ led-3 {
 		};
 	};
 
+	keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&keys_pins>;
+		pinctrl-names = "default";
+
+		key-1 {
+			gpios = <&gpio6 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_1>;
+			label = "SW47";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+
+		key-2 {
+			gpios = <&gpio6 19 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_2>;
+			label = "SW48";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+
+		key-3 {
+			gpios = <&gpio6 20 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_3>;
+			label = "SW49";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+	};
+
 	memory@48000000 {
 		device_type = "memory";
 		/* first 128MB is reserved for secure area. */
@@ -160,6 +192,11 @@ i2c6_pins: i2c6 {
 		function = "i2c6";
 	};
 
+	keys_pins: keys {
+		pins = "GP_6_18", "GP_6_19", "GP_6_20";
+		bias-pull-up;
+	};
+
 	mmc_pins: mmc {
 		groups = "mmc_data8", "mmc_ctrl", "mmc_ds";
 		function = "mmc";
-- 
2.30.2