boards/arm/bbc_microbit/bbc_microbit.dts

/*
 * Copyright (c) 2017 Linaro Limited
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <nordic/nrf51822_qfaa.dtsi>
#include "bbc_microbit-pinctrl.dtsi"

/ {
	model = "BBC Micro:bit";
	compatible = "bbc,microbit";

	/* These aliases are provided for compatibility with samples */
	aliases {
		sw0 = &buttonA;
		sw1 = &buttonB;
		magn0 = &lsm303agr_magn;
		accel0 = &mma8653fc;
		watchdog0 = &wdt0;
	};

	chosen {
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,bt-mon-uart = &uart0;
		zephyr,bt-c2h-uart = &uart0;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		zephyr,display = &led_matrix;
	};

	gpio_keys {
		compatible = "gpio-keys";
		buttonA: button_0 {
			label = "BTN_A";
			gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
		};

		buttonB: button_1 {
			label = "BTN_B";
			gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
		};
	};

	led_matrix: led_matrix {
		compatible = "nordic,nrf-led-matrix";
		status = "okay";
		width = <5>;
		height = <5>;
		pixel-mapping = [00 13 01 14 02
				 23 24 25 26 27
				 11 08 12 28 10
				 07 06 05 04 03
				 22 16 20 15 21];
		row-gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>,
			    <&gpio0 14 GPIO_ACTIVE_HIGH>,
			    <&gpio0 15 GPIO_ACTIVE_HIGH>;
		col-gpios = <&gpio0  4 GPIO_ACTIVE_LOW>,
			    <&gpio0  5 GPIO_ACTIVE_LOW>,
			    <&gpio0  6 GPIO_ACTIVE_LOW>,
			    <&gpio0  7 GPIO_ACTIVE_LOW>,
			    <&gpio0  8 GPIO_ACTIVE_LOW>,
			    <&gpio0  9 GPIO_ACTIVE_LOW>,
			    <&gpio0 10 GPIO_ACTIVE_LOW>,
			    <&gpio0 11 GPIO_ACTIVE_LOW>,
			    <&gpio0 12 GPIO_ACTIVE_LOW>;
		refresh-frequency = <50>;
		timer = <&timer2>;
		pixel-group-size = <3>;
	};

	edge_connector: connector {
		compatible = "microbit,edge-connector";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map = <0 0 &gpio0 3 0>,	/* P0, Analog in */
			   <1 0 &gpio0 2 0>,	/* P1, Analog in */
			   <2 0 &gpio0 1 0>,	/* P2, Analog in */
			   <3 0 &gpio0 4 0>,	/* P3, Analog in, LED Col 1 */
			   <4 0 &gpio0 5 0>,	/* P4, Analog in, LED Col 2 */
			   <5 0 &gpio0 17 0>,	/* P5, Button A */
			   <6 0 &gpio0 12 0>,	/* P6, LED Col 9 */
			   <7 0 &gpio0 11 0>,	/* P7, LED Col 8 */
			   <8 0 &gpio0 18 0>,	/* P8 */
			   <9 0 &gpio0 10 0>,	/* P9, LED Col 7 */
			   <10 0 &gpio0 6 0>,	/* P10, Analog in, LED Col 3 */
			   <11 0 &gpio0 26 0>,	/* P11, Button B */
			   <12 0 &gpio0 20 0>,	/* P12 */
			   <13 0 &gpio0 23 0>,	/* P13, SPI1 SCK */
			   <14 0 &gpio0 22 0>,	/* P14, SPI1 MISO */
			   <15 0 &gpio0 21 0>,	/* P15, SPI1 MOSI */
			   <16 0 &gpio0 16 0>,	/* P16 */
			   /* 17 and 18 are just 3.3V pins */
			   <19 0 &gpio0 0 0>,	/* P19, I2C1 SCL */
			   <20 0 &gpio0 30 0>;	/* P20, I2C1 SDA */
	};
};

&gpiote {
	status = "okay";
};

&gpio0 {
	status = "okay";
	/*
	 * Use the sensing mechanism for all pins by default, as GPIOTE channels
	 * are needed for the LED matrix and the SW PWM.
	 */
	sense-edge-mask = <0xffffffff>;
};

&uart0 {
	status = "okay";
	current-speed = <115200>;
	pinctrl-0 = <&uart0_default>;
	pinctrl-1 = <&uart0_sleep>;
	pinctrl-names = "default", "sleep";
};

&i2c0 {
	status = "okay";
	clock-frequency = <I2C_BITRATE_FAST>;

	/* See https://tech.microbit.org/hardware/i2c/ for board variants */

	/* v1.3 MMA8653FC (= FXOS8700) + MAG3110 */
	pinctrl-0 = <&i2c0_default>;
	pinctrl-1 = <&i2c0_sleep>;
	pinctrl-names = "default", "sleep";
	mma8653fc: mma8653fc@1d {
		compatible = "nxp,fxos8700", "nxp,mma8653fc";
		status = "okay";
		reg = <0x1d>;
		int1-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
		int2-gpios = <&gpio0 27 GPIO_ACTIVE_LOW>;
	};

	/* v1.5 variant 1 LSM303AGR */
	lsm303agr_magn: lsm303agr-magn@1e {
		compatible = "st,lis2mdl", "st,lsm303agr-magn";
		status = "disabled";
		reg = <0x1e>;
		irq-gpios = <&gpio0 27 GPIO_ACTIVE_HIGH>;	/* A3 */
	};

	lsm303agr_accel: lsm303agr-accel@19 {
		compatible = "st,lis2dh", "st,lsm303agr-accel";
		status = "disabled";
		reg = <0x19>;
		irq-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
	};
};

&flash0 {

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

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x00000000 0x8000>;
		};
		slot0_partition: partition@8000 {
			label = "image-0";
			reg = <0x00008000 0x1a000>;
		};
		slot1_partition: partition@22000 {
			label = "image-1";
			reg = <0x00022000 0x1a000>;
		};
		scratch_partition: partition@3c000 {
			label = "image-scratch";
			reg = <0x0003c000 0x2000>;
		};
		storage_partition: partition@3e000 {
			label = "storage";
			reg = <0x0003e000 0x00002000>;
		};
	};
};