linux-kernel - [PATCH v2] ARM: dts: microchip: sama7d65: Add GPIO buttons and LEDs

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Message-ID: <20250917210409.503830-1-Ryan.Wanner@microchip.com>
Date: Wed, 17 Sep 2025 14:04:08 -0700
From: <Ryan.Wanner@...rochip.com>
To: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
	<nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
	<claudiu.beznea@...on.dev>
CC: <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-leds@...r.kernel.org>, Ryan Wanner
	<Ryan.Wanner@...rochip.com>
Subject: [PATCH v2] ARM: dts: microchip: sama7d65: Add GPIO buttons and LEDs

From: Ryan Wanner <Ryan.Wanner@...rochip.com>

Add the USER button as a GPIO input as well as add the LEDs and enable
the blue LED as a heartbeat.

Signed-off-by: Ryan Wanner <Ryan.Wanner@...rochip.com>
---
Changes v1 -> v2:
- Remove the label node in the LEDs.
- Use properties color and function to describe the LEDs.
- Add phandles for the LEDs.

 .../dts/microchip/at91-sama7d65_curiosity.dts | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index f091cc40a9f0..927c27260b6c 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -11,6 +11,8 @@
 #include "sama7d65-pinfunc.h"
 #include "sama7d65.dtsi"
 #include <dt-bindings/mfd/atmel-flexcom.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/pinctrl/at91.h>
 
 / {
@@ -26,6 +28,43 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_key_gpio_default>;
+
+		button {
+			label = "PB_USER";
+			gpios = <&pioa PIN_PC10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_PROG1>;
+			wakeup-source;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_led_gpio_default>;
+
+		led0: led-red {
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pioa PIN_PB17 GPIO_ACTIVE_HIGH>; /* Conflict with pwm. */
+		};
+
+		led1: led-green {
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pioa PIN_PB15 GPIO_ACTIVE_HIGH>; /* Conflict with pwm. */
+		};
+
+		led2: led-blue {
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_HEARTBEAT;
+			gpios = <&pioa PIN_PA21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
 	memory@...00000 {
 		device_type = "memory";
 		reg = <0x60000000 0x40000000>;
@@ -352,6 +391,18 @@ pinctrl_i2c10_default: i2c10-default {
 		bias-pull-up;
 	};
 
+	pinctrl_key_gpio_default: key-gpio-default {
+		pinmux = <PIN_PC10__GPIO>;
+		bias-pull-up;
+	};
+
+	pinctrl_led_gpio_default: led-gpio-default {
+		pinmux = <PIN_PB15__GPIO>,
+			 <PIN_PB17__GPIO>,
+			 <PIN_PA21__GPIO>;
+		bias-pull-up;
+	};
+
 	pinctrl_sdmmc1_default: sdmmc1-default {
 		cmd-data {
 			pinmux = <PIN_PB22__SDMMC1_CMD>,
-- 
2.43.0