[PATCH 6/7] arm64: dts: rockchip: Add user button to Radxa E20C

[Jonas Karlman <jonas@xxxxxxxxx>]

Radxa E20C has two buttons, one SARADC maskrom button and one GPIO user
button.

Add support for the user button using a gpio-keys node.

Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>
---
 .../boot/dts/rockchip/rk3528-radxa-e20c.dts   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
index b9a66c6a1dfb..d19e319b4100 100644
--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -32,6 +32,19 @@ button-maskrom {
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&user_key>;
+
+		button-user {
+			gpios = <&gpio0 RK_PA0 GPIO_ACTIVE_LOW>;
+			label = "USER";
+			linux,code = <BTN_1>;
+			wakeup-source;
+		};
+	};
+
 	vcc_1v8: regulator-1v8-vcc {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc_1v8";
@@ -62,6 +75,14 @@ vcc5v0_sys: regulator-5v0-vcc-sys {
 	};
 };
 
+&pinctrl {
+	gpio-keys {
+		user_key: user-key {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
 &saradc {
 	vref-supply = <&vcc_1v8>;
 	status = "okay";
-- 
2.48.1