From 2b5a719fc6c7794c9423443311cedad534413ff9 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Mon, 14 Sep 2020 11:02:05 -0400
Subject: [PATCH] riscv: add DT binding for BOOT button on Maix board

Add a device tree binding for the BOOT button on the Maix board.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
---
 arch/riscv/dts/k210-maix-bit.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/riscv/dts/k210-maix-bit.dts b/arch/riscv/dts/k210-maix-bit.dts
index e840e04ada..c2beec602c 100644
--- a/arch/riscv/dts/k210-maix-bit.dts
+++ b/arch/riscv/dts/k210-maix-bit.dts
@@ -8,6 +8,7 @@
 #include "k210.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "Sipeed Maix Bit 2.0";
@@ -33,6 +34,16 @@
 		};
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		boot {
+			label = "BOOT";
+			linux,code = <BTN_0>;
+			gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,format = "i2s";