boards/seeed/xiao_rp2040/xiao_rp2040.dts

/*
 * Copyright (c) 2021 Yonatan Schachter
 * Copyright (c) 2023 Seeed Studio inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;

#include <rpi_pico/rp2040.dtsi>
#include "xiao_rp2040-pinctrl.dtsi"
#include "seeed_xiao_connector.dtsi"
#include <freq.h>
#include <zephyr/dt-bindings/led/led.h>
#include <zephyr/dt-bindings/pwm/pwm.h>

/ {
	chosen {
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,flash-controller = &ssi;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,code-partition = &code_partition;
	};

	aliases {
		watchdog0 = &wdt0;
		led-strip = &ws2812;
		pwm-led0 = &pwm_led0;
		led0 = &blue_led;
		led1 = &green_led;
		led2 = &red_led;
	};

	pwm_leds {
		compatible = "pwm-leds";
		status = "disabled";
		pwm_led0: pwm_led_0 {
			pwms = <&pwm 9 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
			label = "PWM_LED";
		};
	};

	leds {
		compatible = "gpio-leds";

		blue_led: blue_led {
			gpios = <&gpio0 25 GPIO_ACTIVE_LOW>;
			label = "BLUE_LED";
		};

		green_led: green_led {
			gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
			label = "GREEN_LED";
		};

		red_led: red_led {
			gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
			label = "RED_LED";
		};
	};
};

&pwm {
	pinctrl-0 = <&pwm_ch4b_default>;
	pinctrl-names = "default";
	divider-int-0 = <255>;
};

&flash0 {
	/*
	 * 2MB of flash minus the 0x100 used for the second stage bootloader
	 */
	reg = <0x10000000 DT_SIZE_M(2)>;

	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;
		code_partition: partition@100 {
			label = "code";
			reg = <0x100 (DT_SIZE_M(2) - 0x100)>;
			read-only;
		};
	};
};

&clocks {
	pinctrl-0 = <&clocks_default>;
	pinctrl-names = "default";
};

&timer {
	status = "okay";
};

&uart0 {
	current-speed = <115200>;
	status = "okay";
	pinctrl-0 = <&uart0_default>;
	pinctrl-names = "default";
};

&i2c1 {
	status = "okay";
	pinctrl-0 = <&i2c1_default>;
	pinctrl-names = "default";
	clock-frequency = <I2C_BITRATE_FAST>;
};

&spi0 {
	status = "okay";
	pinctrl-0 = <&spi0_default>;
	pinctrl-names = "default";
	clock-frequency = <DT_FREQ_M(8)>;
};

&gpio0 {
	status = "okay";

	/*
	 * The neopixel on this board has its positive side hooked up to a GPIO pin
	 * rather than a positive voltage rail to save on power. This will enable
	 * the LED on board initialization.
	 */
	neopixel-power-enable {
		gpio-hog;
		gpios = <11 GPIO_ACTIVE_HIGH>;
		output-high;
	};
};

&wdt0 {
	status = "okay";
};

&adc {
	status = "okay";
	pinctrl-0 = <&adc_default>;
	pinctrl-names = "default";
};

&pio0 {
	status = "okay";

	pio-ws2812 {
		compatible = "worldsemi,ws2812-rpi_pico-pio";
		status = "okay";
		pinctrl-0 = <&ws2812_pio0_default>;
		pinctrl-names = "default";
		bit-waveform = <3>, <3>, <4>;

		ws2812: ws2812 {
			status = "okay";
			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
			chain-length = <1>;
			color-mapping = <LED_COLOR_ID_GREEN
					LED_COLOR_ID_RED
					LED_COLOR_ID_BLUE>;
			reset-delay = <280>;
			frequency = <800000>;
		};
	};
};

zephyr_udc0: &usbd {
	status = "okay";
};

&vreg {
	regulator-always-on;
	regulator-allowed-modes = <REGULATOR_RPI_PICO_MODE_NORMAL>;
};