Linux preempt-rt

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/*
 * Copyright (c) 2020 Thomas Le Roux
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/ {
	arduino_header: connector {
		compatible = "arduino-header-r3";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map =
			<0 0 &gpioc 4 0>,    /* A0 */
			<1 0 &gpioc 1 0>,    /* A1 */
			<2 0 &gpioc 3 0>,    /* A2 */
			<3 0 &gpiof 10 0>,   /* A3 */
			<4 0 &gpioa 1 0>,    /* A4 */
			<5 0 &gpioc 0 0>,    /* A5 */
			<6 0 &gpiog 8 0>,    /* D0 */
			<7 0 &gpiog 7 0>,    /* D1 */
			<8 0 &gpiog 13 0>,   /* D2 */
			<9 0 &gpioh 15 0>,   /* D3 */
			<10 0 &gpioi 11 0>,  /* D4 */
			<11 0 &gpiob 9 0>,   /* D5 */
			<12 0 &gpioi 6 0>,   /* D6 */
			<13 0 &gpiog 6 0>,   /* D7 */
			<14 0 &gpiog 15 0>,  /* D8 */
			<15 0 &gpioh 13 0>,  /* D9 */
			<16 0 &gpioa 15 0>,  /* D10 */
			<17 0 &gpiob 5 0>,   /* D11 */
			<18 0 &gpiob 4 0>,   /* D12 */
			<19 0 &gpioa 5 0>,   /* D13 */
			<20 0 &gpiob 7 0>,   /* D14 */
			<21 0 &gpiob 8 0>;   /* D15 */
	};
};

arduino_i2c: &i2c1 {};
arduino_spi: &spi1 {};
arduino_serial: &lpuart1 {};