boards/arm/serpente/serpente.dts

/*
 * Copyright (c) 2020 Alexander Falb <fal3xx@gmail.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

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

/ {
	model = "Serpente";
	compatible = "arturo182,serpente";

	chosen {
		zephyr,console = &sercom2;
		zephyr,shell-uart = &sercom2;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &code_partition;
	};

	aliases {
		led0 = &red_led;
		led1 = &green_led;
		led2 = &blue_led;
		red-led = &red_led;
		green-led = &green_led;
		blue-led = &blue_led;

		pwm-led0 = &red_pwm_led;
		pwm-led1 = &green_pwm_led;
		pwm-led2 = &blue_pwm_led;
		red-pwm-led = &red_pwm_led;
		green-pwm-led = &green_pwm_led;
		blue-pwm-led = &blue_pwm_led;
	};

	leds {
		compatible = "gpio-leds";
		red_led: led_0 {
			gpios = <&porta 22 GPIO_ACTIVE_LOW>;
			label = "Red LED";
		};
		green_led: led_1 {
			gpios = <&porta 19 GPIO_ACTIVE_LOW>;
			label = "Green LED";
		};
		blue_led: led_2 {
			gpios = <&porta 23 GPIO_ACTIVE_LOW>;
			label = "Blue LED";
		};
	};

	pwmleds {
		compatible = "pwm-leds";
		red_pwm_led: pwm_led_0 {
			pwms = <&tcc0 0 PWM_MSEC(20)>;
			label = "Red PWM LED";
		};
		green_pwm_led: pwm_led_1 {
			pwms = <&tcc0 3 PWM_MSEC(20)>;
			label = "Green PWM LED";
		};
		blue_pwm_led: pwm_led_2 {
			pwms = <&tcc0 1 PWM_MSEC(20)>;
			label = "Blue PWM LED";
		};
	};
};

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

&sercom0 {
	status = "okay";
};

&sercom2 {
	status = "okay";
	compatible = "atmel,sam0-uart";
	current-speed = <115200>;
	rxpo = <1>;
	txpo = <0>;

	pinctrl-0 = <&sercom2_uart_default>;
	pinctrl-names = "default";
};

&sercom3 {
	status = "okay";
	compatible = "atmel,sam0-spi";
	dipo = <1>;
	dopo = <1>;
	#address-cells = <1>;
	#size-cells = <0>;

	pinctrl-0 = <&sercom3_spi_default>;
	pinctrl-names = "default";
};

zephyr_udc0: &usb0 {
	status = "okay";

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

&tcc0 {
	status = "okay";
	compatible = "atmel,sam0-tcc-pwm";
	prescaler = <4>;
	#pwm-cells = <2>;

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

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

		boot_partition: partition@0 {
			label = "uf2";
			reg = <0x00000000 DT_SIZE_K(8)>;
			read-only;
		};

		code_partition: partition@2000 {
			label = "code";
			reg = <0x2000 DT_SIZE_K(256-8)>;
			read-only;
		};
	};
};