[PATCH 12/14] MIPS: DTS: CI20: add DT node for SW1 as Enter button

["H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx>]

The SW1 button can be used as a simple one-button keyboard
and is connected to PD17.

Note: SW1 has a second meaning to change the boot sequence
when pressed while powering on.

Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index b4a820313992..8f9d182566db 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -4,6 +4,7 @@
 #include "jz4780.dtsi"
 #include <dt-bindings/clock/ingenic,tcu.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	compatible = "img,ci20", "ingenic,jz4780";
@@ -25,6 +26,17 @@
 		       0x30000000 0x30000000>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		sw1 {
+			label = "ci20:sw1";
+			linux,code = <KEY_ENTER>;
+			gpios = <&gpd 17 GPIO_ACTIVE_HIGH>;
+			wakeup-source;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
-- 
2.23.0