u-boot/arch/arm/dts/socfpga_cyclone5_socrates.dts

/*
 *  Copyright (C) 2014 Steffen Trumtrar <s.trumtrar@pengutronix.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include "socfpga_cyclone5.dtsi"

/ {
	model = "EBV SOCrates";
	compatible = "ebv,socrates", "altr,socfpga-cyclone5", "altr,socfpga";

	chosen {
		bootargs = "console=ttyS0,115200";
	};

 	aliases {
		spi0 = "/spi@ff705000";		/* QSPI */
		spi1 = "/spi@fff00000";
		spi2 = "/spi@fff01000";
 	};

	memory {
		name = "memory";
		device_type = "memory";
		reg = <0x0 0x40000000>; /* 1GB */
	};
};

&gmac1 {
	status = "okay";
};

&i2c0 {
	status = "okay";

	rtc: rtc@68 {
		compatible = "stm,m41t82";
		reg = <0x68>;
	};
};

&mmc {
	status = "okay";
};

&qspi {
	status = "okay";

	flash0: n25q00@0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "n25q00";
		reg = <0>;      /* chip select */
		spi-max-frequency = <50000000>;
		m25p,fast-read;
		page-size = <256>;
		block-size = <16>; /* 2^16, 64KB */
		read-delay = <4>;  /* delay value in read data capture register */
		tshsl-ns = <50>;
		tsd2d-ns = <50>;
		tchsh-ns = <4>;
		tslch-ns = <4>;
	};
};