u-boot/arch/arm/dts/mt7986b-sd-rfb.dts

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

/dts-v1/;
#include "mt7986.dtsi"
#include <dt-bindings/gpio/gpio.h>

/ {
	#address-cells = <1>;
	#size-cells = <1>;
	model = "mt7986-rfb";
	compatible = "mediatek,mt7986", "mediatek,mt7986-rfb",
		     "mediatek,mt7986-sd-rfb";
	chosen {
		stdout-path = &uart0;
		tick-timer = &timer0;
	};

	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";
};

&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_pins>;
	status = "disabled";
};

&eth {
	status = "okay";
	mediatek,gmac-id = <0>;
	phy-mode = "sgmii";
	mediatek,switch = "mt7531";
	reset-gpios = <&gpio 5 GPIO_ACTIVE_HIGH>;

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

&pinctrl {
	spi_flash_pins: spi0-pins-func-1 {
		mux {
			function = "flash";
			groups = "spi0", "spi0_wp_hold";
		};

		conf-pu {
			pins = "SPI2_CS", "SPI2_HOLD", "SPI2_WP";
			drive-strength = <MTK_DRIVE_8mA>;
			bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
		};

		conf-pd {
			pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
			drive-strength = <MTK_DRIVE_8mA>;
			bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
		};
	};

	spic_pins: spi1-pins-func-1 {
		mux {
			function = "spi";
			groups = "spi1_2";
		};
	};

	uart1_pins: spi1-pins-func-3 {
		mux {
			function = "uart";
			groups = "uart1_2";
		};
	};

	pwm_pins: pwm0-pins-func-1 {
		mux {
			function = "pwm";
			groups = "pwm0";
		};
	};

	mmc0_pins_default: mmc0default {
		mux {
			function = "flash";
			groups =  "emmc_45";
			input-schmitt-enable;
		};

		conf-cmd-dat {
			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
			       "SPI0_CS", "SPI0_HOLD", "SPI0_WP",
			       "SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
			input-enable;
			drive-strength = <MTK_DRIVE_4mA>;
			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
		};

		conf-clk {
			pins = "SPI1_CS";
			drive-strength = <MTK_DRIVE_6mA>;
			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
		};

		conf-rst {
			pins = "PWM1";
			drive-strength = <MTK_DRIVE_4mA>;
			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
		};
	};
};

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

	spi_nor@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <52000000>;
	};

	spi_nand@1 {
		compatible = "spi-nand";
		reg = <1>;
		spi-max-frequency = <52000000>;
	};
};

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

&watchdog {
	status = "disabled";
};

&mmc0 {
	pinctrl-names = "default";
	pinctrl-0 = <&mmc0_pins_default>;
	bus-width = <4>;
	max-frequency = <52000000>;
	cap-sd-highspeed;
	r_smpl = <1>;
	vmmc-supply = <&reg_3p3v>;
	vqmmc-supply = <&reg_3p3v>;
	status = "okay";
};