[PATCH 3/3] arm64: dts: renesas: r8a77990: ebisu: Add SW4 support

[Magnus Damm <damm@xxxxxxxxxxxxx>]

From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>

Add support for SW4 via "gpio-keys" on the R-Car E3 Ebisu board.

Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
---

 arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts |   42 ++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

--- 0001/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
+++ work/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts	2021-06-19 19:08:07.927645590 +0900
@@ -8,6 +8,7 @@
 /dts-v1/;
 #include "r8a77990.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "Renesas Ebisu board based on r8a77990";
@@ -80,6 +81,42 @@
 		};
 	};
 
+	keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&keys_pins>;
+		pinctrl-names = "default";
+
+		key-1 {
+			gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_1>;
+			label = "SW4-1";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-2 {
+			gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_2>;
+			label = "SW4-2";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-3 {
+			gpios = <&gpio5 12 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_3>;
+			label = "SW4-3";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-4 {
+			gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_4>;
+			label = "SW4-4";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+	};
+
 	lvds-decoder {
 		compatible = "thine,thc63lvd1024";
 		vcc-supply = <&reg_3p3v>;
@@ -540,6 +577,11 @@
 		function = "intc_ex";
 	};
 
+	keys_pins: keys {
+		pins = "GP_5_10", "GP_5_11", "GP_5_12", "GP_5_13";
+		bias-pull-up;
+	};
+
 	pwm3_pins: pwm3 {
 		groups = "pwm3_b";
 		function = "pwm3";