linux-kernel - [PATCH 1/1] riscv: sophgo: dts: add power key for pioneer box

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Message-Id: <12e65a99f1b52c52b7372e900a203063b30c74b5.1728350655.git.unicorn_wang@outlook.com>
Date: Tue,  8 Oct 2024 09:43:52 +0800
From: Chen Wang <unicornxw@...il.com>
To: aou@...s.berkeley.edu,
	unicorn_wang@...look.com,
	conor+dt@...nel.org,
	guoren@...nel.org,
	inochiama@...look.com,
	krzk+dt@...nel.org,
	palmer@...belt.com,
	paul.walmsley@...ive.com,
	robh@...nel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	chao.wei@...hgo.com,
	haijiao.liu@...hgo.com,
	xiaoguang.xing@...hgo.com,
	chunzhi.lin@...hgo.com
Subject: [PATCH 1/1] riscv: sophgo: dts: add power key for pioneer box

From: Chen Wang <unicorn_wang@...look.com>

There is a power button on the front panel of the pioneer box.
Short pressing the button will trigger the onboard MCU to
notify SG2042 through GPIO22 to enter the power-off process.

Signed-off-by: Chen Wang <unicorn_wang@...look.com>
---
 .../boot/dts/sophgo/sg2042-milkv-pioneer.dts      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index a3f9d6f22566..be596d01ff8d 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -5,6 +5,9 @@
 
 #include "sg2042.dtsi"
 
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
 / {
 	model = "Milk-V Pioneer";
 	compatible = "milkv,pioneer", "sophgo,sg2042";
@@ -12,6 +15,18 @@ / {
 	chosen {
 		stdout-path = "serial0";
 	};
+
+	gpio-power {
+		compatible = "gpio-keys";
+
+		key-power {
+			label = "Power Key";
+			linux,code = <KEY_POWER>;
+			gpios = <&port0a 22 GPIO_ACTIVE_HIGH>;
+			linux,input-type = <EV_KEY>;
+			debounce-interval = <100>;
+		};
+	};
 };
 
 &cgi_main {
-- 
2.34.1