u-boot/arch/arm/dts/r8a77970-eagle.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree Source for the Eagle board
 *
 * Copyright (C) 2016-2017 Renesas Electronics Corp.
 * Copyright (C) 2017 Cogent Embedded, Inc.
 */

/dts-v1/;
#include "r8a77970.dtsi"
#include <dt-bindings/gpio/gpio.h>

/ {
	model = "Renesas Eagle board based on r8a77970";
	compatible = "renesas,eagle", "renesas,r8a77970";

	aliases {
		serial0 = &scif0;
		ethernet0 = &avb;
		spi0 = &rpc;
	};

	chosen {
		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
		stdout-path = "serial0:115200n8";
	};

	memory@48000000 {
		device_type = "memory";
		/* first 128MB is reserved for secure area. */
		reg = <0x0 0x48000000 0x0 0x38000000>;
	};
};

&avb {
	pinctrl-0 = <&avb0_pins>;
	pinctrl-names = "default";
	renesas,no-ether-link;
	phy-handle = <&phy0>;
	phy-mode = "rgmii-id";
	status = "okay";
	reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;

	phy0: ethernet-phy@0 {
		rxc-skew-ps = <1500>;
		reg = <0>;
		interrupt-parent = <&gpio1>;
		interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
	};
};

&extal_clk {
	clock-frequency = <16666666>;
};

&extalr_clk {
	clock-frequency = <32768>;
};

&i2c0 {
	pinctrl-0 = <&i2c0_pins>;
	pinctrl-names = "default";

	status = "okay";
	clock-frequency = <400000>;

	io_expander: gpio@20 {
		compatible = "onnn,pca9654";
		reg = <0x20>;
		gpio-controller;
		#gpio-cells = <2>;
	};
};

&pfc {
	avb0_pins: avb {
		mux {
			groups = "avb0_link", "avb0_mdio", "avb0_rgmii", "avb0_txcrefclk";
			function = "avb0";
		};
	};

	i2c0_pins: i2c0 {
		groups = "i2c0";
		function = "i2c0";
	};

	scif0_pins: scif0 {
		groups = "scif0_data";
		function = "scif0";
	};
};

&rpc {
	num-cs = <1>;
	status = "okay";
	spi-max-frequency = <50000000>;
	#address-cells = <1>;
	#size-cells = <0>;

	flash0: spi-flash@0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "s25fs512s", "spi-flash", "jedec,spi-nor";
		spi-max-frequency = <50000000>;
		spi-tx-bus-width = <1>;
		spi-rx-bus-width = <1>;
		reg = <0>;
		status = "okay";
	};
};

&rwdt {
	timeout-sec = <60>;
	status = "okay";
};

&scif0 {
	pinctrl-0 = <&scif0_pins>;
	pinctrl-names = "default";

	status = "okay";
};