boards/arm/arduino_zero/arduino_zero.dts

/*
 * Copyright (c) 2017 Google LLC.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <atmel/samd21.dtsi>
#include "arduino_zero-pinctrl.dtsi"

/ {
	model = "Arduino Zero";
	compatible = "arduino,zero", "atmel,samd21g18a", "atmel,samd21";

	chosen {
		zephyr,console = &sercom5;
		zephyr,shell-uart = &sercom5;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
	};

	/* These aliases are provided for compatibility with samples */
	aliases {
		led0 = &led0;
		led1 = &led1;
		led2 = &led2;
		pwm-led0 = &pwm_led0;
	};

	leds {
		compatible = "gpio-leds";
		led0: led_0 {
			gpios = <&porta 17 0>;
			label = "LED";
		};
		led1: led_1 {
			gpios = <&porta 27 0>;
			label = "TX";
		};
		led2: led_2 {
			gpios = <&portb 3 0>;
			label = "RX";
		};
	};

	pwmleds {
		compatible = "pwm-leds";

		pwm_led0: pwm_led_0 {
			pwms = <&tcc2 1 PWM_MSEC(20)>;
		};
	};
};

&cpu0 {
	clock-frequency = <48000000>;
};

&sercom0 {
	status = "okay";
	compatible = "atmel,sam0-uart";
	current-speed = <115200>;
	rxpo = <3>;
	txpo = <1>;

	pinctrl-0 = <&sercom0_uart_default>;
	pinctrl-names = "default";
};

&sercom5 {
	status = "okay";
	compatible = "atmel,sam0-uart";
	current-speed = <115200>;
	rxpo = <3>;
	txpo = <1>;

	pinctrl-0 = <&sercom5_uart_default>;
	pinctrl-names = "default";
};

&sercom4 {
	status = "okay";
	compatible = "atmel,sam0-spi";
	dipo = <0>;
	dopo = <1>;
	#address-cells = <1>;
	#size-cells = <0>;

	pinctrl-0 = <&sercom4_spi_default>;
	pinctrl-names = "default";
};

&tcc2 {
	status = "okay";
	compatible = "atmel,sam0-tcc-pwm";
	/* Gives a maximum period of 1.4 s */
	prescaler = <1024>;
	#pwm-cells = <2>;

	pinctrl-0 = <&pwm_default>;
	pinctrl-names = "default";
};

&dac0 {
	status = "okay";

	pinctrl-0 = <&dac_default>;
	pinctrl-names = "default";
};

&flash0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		/*
		 * The final 16 KiB is reserved for the application.
		 * Storage partition will be used by FCB/LittleFS/NVS
		 * if enabled.
		 */
		storage_partition: partition@3c000 {
			label = "storage";
			reg = <0x0003c000 0x00004000>;
		};
	};
};

zephyr_udc0: &usb0 {
	status = "okay";

	pinctrl-0 = <&usb_dc_default>;
	pinctrl-names = "default";
};