u-boot/arch/arm/dts/mt7988-sd-rfb.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2022 MediaTek Inc.
 * Author: Sam Shih <sam.shih@mediatek.com>
 */

/dts-v1/;
#include "mt7988.dtsi"
#include <dt-bindings/gpio/gpio.h>

/ {
	model = "mt7988-rfb";
	compatible = "mediatek,mt7988-rfb", "mediatek,mt7988-sd-rfb";

	chosen {
		stdout-path = &uart0;
	};

	memory@40000000 {
		device_type = "memory";
		reg = <0 0x40000000 0 0x10000000>;
	};

	reg_3p3v: regulator-3p3v {
		compatible = "regulator-fixed";
		regulator-name = "fixed-3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
	};
};

&uart0 {
	status = "okay";
};

&i2c1 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c1_pins>;
	status = "okay";
};

&eth {
	status = "okay";
	mediatek,gmac-id = <0>;
	phy-mode = "usxgmii";
	mediatek,switch = "mt7988";

	fixed-link {
		speed = <1000>;
		full-duplex;
		pause;
	};
};

&pinctrl {
	i2c1_pins: i2c1-pins {
		mux {
			function = "i2c";
			groups = "i2c1_0";
		};
	};

	pwm_pins: pwm-pins {
		mux {
			function = "pwm";
			groups = "pwm0", "pwm1", "pwm2", "pwm3", "pwm4",
				 "pwm5", "pwm6", "pwm7";
		};
	};

	spi0_pins: spi0-pins {
		mux {
			function = "spi";
			groups = "spi0", "spi0_wp_hold";
		};
	};

	mmc1_pins_default: mmc1default {
		mux {
			function = "flash";
			groups =  "emmc_45";
		};

		conf-cmd-dat {
			pins = "SPI2_CSB", "SPI2_MISO", "SPI2_MOSI",
			       "SPI2_CLK", "SPI2_HOLD";
			input-enable;
		};

		conf-clk {
			pins = "SPI2_WP";
		};
	};
};

&pwm {
	pinctrl-names = "default";
	pinctrl-0 = <&pwm_pins>;
	status = "okay";
};

&spi0 {
	pinctrl-names = "default";
	pinctrl-0 = <&spi0_pins>;
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";
	must_tx;
	enhance_timing;
	dma_ext;
	ipm_design;
	support_quad;
	tick_dly = <2>;
	sample_sel = <0>;

	spi_nand@0 {
		compatible = "spi-nand";
		reg = <0>;
		spi-max-frequency = <52000000>;
	};
};

&mmc0 {
	pinctrl-names = "default";
	pinctrl-0 = <&mmc1_pins_default>;
	max-frequency = <52000000>;
	bus-width = <4>;
	cap-sd-highspeed;
	vmmc-supply = <&reg_3p3v>;
	vqmmc-supply = <&reg_3p3v>;
	status = "okay";
};