From 699349e09be0216875f209e736beebba88cfc1ea Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Mon, 8 Nov 2021 13:22:00 +0100
Subject: [PATCH] arm64: tegra: Enable gpio-keys on Jetson AGX Orin Developer
 Kit

Expose power, force-recovery and sleep buttons via a gpio-keys device so
that userspace can receive events from them.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts  | 31 ++++++++++++++++++++++
 arch/arm64/boot/dts/nvidia/tegra234.dtsi           |  1 +
 2 files changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index efbbb87..cf9acab 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -1,6 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/input/gpio-keys.h>
+
 #include "tegra234-p3701-0000.dtsi"
 #include "tegra234-p3737-0000.dtsi"
 
@@ -18,6 +21,34 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		status = "okay";
+
+		force-recovery {
+			label = "Force Recovery";
+			gpios = <&gpio TEGRA234_MAIN_GPIO(G, 0) GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_1>;
+		};
+
+		power-key {
+			label = "Power";
+			gpios = <&gpio_aon TEGRA234_AON_GPIO(EE, 4) GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_KEY>;
+			linux,code = <KEY_POWER>;
+			wakeup-event-action = <EV_ACT_ASSERTED>;
+			wakeup-source;
+		};
+
+		suspend {
+			label = "Suspend";
+			gpios = <&gpio TEGRA234_MAIN_GPIO(G, 2) GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_KEY>;
+			linux,code = <KEY_SLEEP>;
+		};
+	};
+
 	serial {
 		status = "okay";
 	};
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index cbebf1e..02d4d78 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 #include <dt-bindings/clock/tegra234-clock.h>
+#include <dt-bindings/gpio/tegra234-gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/mailbox/tegra186-hsp.h>
 #include <dt-bindings/memory/tegra234-mc.h>
-- 
2.7.4