u-boot/arch/arm/dts/socfpga_arria5_secu1.dts

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2016-2020 ABB
 */

#include "socfpga_arria5.dtsi"
#include "socfpga-common-u-boot.dtsi"
#include <dt-bindings/gpio/gpio.h>

/ {
	model = "ABB SoC SECU1 Board";
	compatible = "altr,socfpga-secu1", "altr,socfpga";

	chosen {
		stdout-path = "serial0:115200n8";
		bootargs = "console=ttyS0,115200";
	};

	memory {
		name = "memory";
		device_type = "memory";
		reg = <0x0 0x20000000>; /* 512MB */
	};

	aliases {
		/*
		 * this allow the ethaddr uboot environment variable contents
		 * to be added to the gmac0 device tree blob.
		 */
		ethernet0 = &gmac0;
		spi0 = &spi1;
	};

	i2c_gpio: i2c@0 {
		compatible = "i2c-gpio";
		#address-cells = <1>;
		#size-cells = <0>;
		gpios = <&portc 5 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)	/* SDA */
			 &portc 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;	/* SCL */
		i2c-gpio,delay-us = <5>;	/* ~100 kHz */
		i2c-gpio,deblock;

		temp_sensor@48 {
			compatible = "national,lm75";
			reg = <0x48>;
		};

		eeprom@50 {
			compatible = "at,24c08";
			reg = <0x50>;
		};

		rtc: rtc@68 {
			compatible = "st,m41st87";
			reg = <0x68>;
			interrupt-parent = <&intc>;
			interrupts = <0 42 0x4>;
		};
	};

	regulator_3_3v: 3-3-v-regulator {
		compatible = "regulator-fixed";
		regulator-name = "3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
	};
};

&gmac0 {
	status = "okay";
	phy-mode = "rgmii";
	fixed-link {
		speed = <1000>;
		full-duplex;
	};
};

&gpio0 {
	status = "okay";
};

&gpio1 {
	status = "okay";
};

&gpio2 {
	status = "okay";
};

&mmc0 {
	vmmc-supply = <&regulator_3_3v>;
	vqmmc-supply = <&regulator_3_3v>;
	bus-width = <4>;
	u-boot,dm-pre-reloc;
};

&nand0 {
	status = "okay";
};

&porta {
	bank-name = "porta";
};

&portb {
	bank-name = "portb";
};

&portc {
	bank-name = "portc";
};

&spi1 {
	status = "okay";
};

&uart0 {
	clock-frequency = <100000000>;
	u-boot,dm-pre-reloc;
	status = "okay";
};

&uart1 {
	clock-frequency = <100000000>;
};

&watchdog0 {
	u-boot,dm-pre-reloc;
	status = "okay";
};