From f3419660bbded98efcd3664bed34463af61a30a0 Mon Sep 17 00:00:00 2001
From: "Mauro (mdrjr) Ribeiro" <mauro.ribeiro@hardkernel.com>
Date: Thu, 22 Feb 2024 15:52:09 -0300
Subject: [PATCH] ODROID-N2: overlay: add shutdown via GPIO

---
 .../dts/amlogic/overlays/odroidn2/Makefile    |  3 +-
 .../overlays/odroidn2/gpio-poweroff.dtso      | 45 +++++++++++++++++++
 2 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/amlogic/overlays/odroidn2/gpio-poweroff.dtso

diff --git a/arch/arm64/boot/dts/amlogic/overlays/odroidn2/Makefile b/arch/arm64/boot/dts/amlogic/overlays/odroidn2/Makefile
index 6467074b7896..07faeb5a645b 100644
--- a/arch/arm64/boot/dts/amlogic/overlays/odroidn2/Makefile
+++ b/arch/arm64/boot/dts/amlogic/overlays/odroidn2/Makefile
@@ -13,7 +13,8 @@ dtbo-y += \
 	uart0.dtbo \
 	uart1.dtbo \
 	w1-gpio_p15.dtbo \
-	w1-gpio_p22.dtbo
+	w1-gpio_p22.dtbo \
+	gpio-poweroff.dtbo
 
 targets += $(dtbo-y)
 always-y := $(dtbo-y)
diff --git a/arch/arm64/boot/dts/amlogic/overlays/odroidn2/gpio-poweroff.dtso b/arch/arm64/boot/dts/amlogic/overlays/odroidn2/gpio-poweroff.dtso
new file mode 100644
index 000000000000..d8a600607a9b
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/overlays/odroidn2/gpio-poweroff.dtso
@@ -0,0 +1,45 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/meson-g12a-gpio.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		target = <&periphs_pinctrl>;
+
+		__overlay__ {
+			shutdown_gpio_pins: shutdown-gpio-state {
+				mux {
+					groups = "GPIOX_3";
+					function = "shutdown";
+					output-disable;
+					bias-pull-up;
+					drive-strength-microamp = <4000>;
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target-path = "/soc";
+
+		__overlay__ {
+			shutdown_gpio: shutdown_gpio@3 {
+				compatible = "gpio-keys-polled";
+				poll-interval = <10>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&shutdown_gpio_pins>;
+
+				status = "okay";
+
+				shutdown {
+					label = "shutdown";
+					linux,code = <116>;
+					gpios = <&gpio GPIOX_3 GPIO_ACTIVE_LOW>;
+					debounce-interval = <100>;
+				};
+			};
+		};
+	};
+};