Linux preempt-rt

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/*
 * Copyright (c) 2021 Laird Connectivity
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <nordic/nrf52840_qiaa.dtsi>

/ {
	model = "Laird BL654 Sensor Board";
	compatible = "lairdconnect,bl654-sensor-board";

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

	leds {
		compatible = "gpio-leds";
		led1: led_1 {
			gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
			label = "Blue LED 1";
		};
	};

	buttons {
		compatible = "gpio-keys";
		button1: button_1 {
			gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
			label = "Push button switch 1 (SW1)";
		};
	};

	/* These aliases are provided for compatibility with samples */
	aliases {
		led0 = &led1;
		sw0 = &button1;
	};
};

&adc {
	status = "okay";
};

&gpiote {
	status = "okay";
};

&gpio0 {
	status = "okay";
};

&gpio1 {
	status = "okay";
};

&uart0 {
	compatible = "nordic,nrf-uart";
	current-speed = <115200>;
	status = "okay";
	tx-pin = <6>;
	rx-pin = <8>;
	rts-pin = <5>;
	cts-pin = <7>;
};

&i2c0 {
	compatible = "nordic,nrf-twi";
	status = "okay";
	sda-pin = <26>;
	scl-pin = <27>;

	bme280@76 {
		compatible = "bosch,bme280";
		status = "okay";
		label = "BME280";
		reg = <0x76>;
	};
};

&pwm0 {
	status = "okay";
	ch0-pin = <16>;
};

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

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x000000000 0x00010000>;
		};
		slot0_partition: partition@10000 {
			label = "image-0";
			reg = <0x00010000 0x00070000>;
		};
		slot1_partition: partition@80000 {
			label = "image-1";
			reg = <0x00080000 0x00070000>;
		};
		scratch_partition: partition@f0000 {
			label = "image-scratch";
			reg = <0x000f0000 0x00008000>;
		};

		/*
		 * The flash starting at 0x000f8000 and ending at
		 * 0x000fffff is reserved for use by the application.
		 */

		/*
		 * Storage partition will be used by FCB/LittleFS/NVS
		 * if enabled.
		 */
		storage_partition: partition@f8000 {
			label = "storage";
			reg = <0x000f8000 0x00008000>;
		};
	};
};