linux-kernel - [PATCH] arm64: dts: renesas: rzg3s-smarc: Add gpio keys

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Date: Wed, 27 Dec 2023 15:08:10 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: geert+renesas@...der.be,
	magnus.damm@...il.com,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org
Cc: linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	claudiu.beznea@...on.dev,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH] arm64: dts: renesas: rzg3s-smarc: Add gpio keys

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

RZ SMARC Carrier II board has 3 user buttons called USER_SW1, USER_SW2,
USER_SW3. Add a DT node in device tree to propertly instantiate the
gpio-keys driver for these buttons.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---
 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi | 53 ++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
index 214520137230..deb2ad37bb2e 100644
--- a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
@@ -6,6 +6,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
 / {
@@ -14,6 +15,37 @@ aliases {
 		mmc1 = &sdhi1;
 	};
 
+	keys {
+		compatible = "gpio-keys";
+
+		key-1 {
+			interrupts = <RZG2L_GPIO(18, 0) IRQ_TYPE_EDGE_FALLING>;
+			interrupt-parent = <&pinctrl>;
+			linux,code = <KEY_1>;
+			label = "USER_SW1";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+
+		key-2 {
+			interrupts = <RZG2L_GPIO(0, 1) IRQ_TYPE_EDGE_FALLING>;
+			interrupt-parent = <&pinctrl>;
+			linux,code = <KEY_2>;
+			label = "USER_SW2";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+
+		key-3 {
+			interrupts = <RZG2L_GPIO(0, 3) IRQ_TYPE_EDGE_FALLING>;
+			interrupt-parent = <&pinctrl>;
+			linux,code = <KEY_3>;
+			label = "USER_SW3";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+	};
+
 	vcc_sdhi1: regulator-vcc-sdhi1 {
 		compatible = "regulator-fixed";
 		regulator-name = "SDHI1 Vcc";
@@ -35,6 +67,27 @@ vccq_sdhi1: regulator-vccq-sdhi1 {
 };
 
 &pinctrl {
+	key-1-gpio-hog {
+		gpio-hog;
+		gpios = <RZG2L_GPIO(18, 0) GPIO_ACTIVE_LOW>;
+		input;
+		line-name = "key-1-gpio-irq";
+	};
+
+	key-2-gpio-hog {
+		gpio-hog;
+		gpios = <RZG2L_GPIO(0, 1) GPIO_ACTIVE_LOW>;
+		input;
+		line-name = "key-2-gpio-irq";
+	};
+
+	key-3-gpio-hog {
+		gpio-hog;
+		gpios = <RZG2L_GPIO(0, 3) GPIO_ACTIVE_LOW>;
+		input;
+		line-name = "key-3-gpio-irq";
+	};
+
 	scif0_pins: scif0 {
 		pinmux = <RZG2L_PORT_PINMUX(6, 3, 1)>, /* RXD */
 			 <RZG2L_PORT_PINMUX(6, 4, 1)>; /* TXD */
-- 
2.39.2