[PATCH 3/8] ARM: dts: mstar: unitv2: Add button

[Daniel Palmer <daniel@thingy.jp>]

From: Daniel Palmer <daniel@0x0f.com>

Add the front panel button as a polled gpio-keys device reporting
BTN_0.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
---
 .../sigmastar/mstar-infinity2m-ssd202d-unitv2.dts    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/sigmastar/mstar-infinity2m-ssd202d-unitv2.dts b/arch/arm/boot/dts/sigmastar/mstar-infinity2m-ssd202d-unitv2.dts
index 5e79819a070a..b5a282cd1a67 100644
--- a/arch/arm/boot/dts/sigmastar/mstar-infinity2m-ssd202d-unitv2.dts
+++ b/arch/arm/boot/dts/sigmastar/mstar-infinity2m-ssd202d-unitv2.dts
@@ -8,6 +8,7 @@
 #include "mstar-infinity2m-ssd202d.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/leds/common.h>
 
 / {
@@ -40,6 +41,17 @@ led-1 {
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <100>;
+
+		button {
+			label = "button";
+			gpios = <&gpio SSD20XD_GPIO_GPIO2 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+	};
+
 	reg_vcc_core: regulator-vcc-core {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc_core";
-- 
2.53.0