linuxdebug/arch/arm/boot/dts/bcm2711-rpi-4-b.dts

// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "bcm2711.dtsi"
#include "bcm2711-rpi.dtsi"
#include "bcm283x-rpi-usb-peripheral.dtsi"
#include "bcm283x-rpi-wifi-bt.dtsi"

/ {
	compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
	model = "Raspberry Pi 4 Model B";

	chosen {
		/* 8250 auxiliary UART instead of pl011 */
		stdout-path = "serial1:115200n8";
	};

	leds {
		led-act {
			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
		};

		led-pwr {
			label = "PWR";
			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
			default-state = "keep";
			linux,default-trigger = "default-on";
		};
	};

	sd_io_1v8_reg: sd_io_1v8_reg {
		compatible = "regulator-gpio";
		regulator-name = "vdd-sd-io";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
		regulator-settling-time-us = <5000>;
		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
		states = <1800000 0x1>,
			 <3300000 0x0>;
		status = "okay";
	};

	sd_vcc_reg: sd_vcc_reg {
		compatible = "regulator-fixed";
		regulator-name = "vcc-sd";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		enable-active-high;
		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
	};
};

&bt {
	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
};

&ddc0 {
	status = "okay";
};

&ddc1 {
	status = "okay";
};

&expgpio {
	gpio-line-names = "BT_ON",		/*  0 */
			  "WL_ON",
			  "PWR_LED_OFF",
			  "GLOBAL_RESET",
			  "VDD_SD_IO_SEL",
			  "CAM_GPIO",		/*  5 */
			  "SD_PWR_ON",
			  "";
};

&gpio {
	/*
	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
	 * the official GPU firmware DT blob.
	 *
	 * Legend:
	 * "FOO" = GPIO line named "FOO" on the schematic
	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
	 */
	gpio-line-names = "ID_SDA",		/*  0 */
			  "ID_SCL",
			  "SDA1",
			  "SCL1",
			  "GPIO_GCLK",
			  "GPIO5",		/*  5 */
			  "GPIO6",
			  "SPI_CE1_N",
			  "SPI_CE0_N",
			  "SPI_MISO",
			  "SPI_MOSI",		/* 10 */
			  "SPI_SCLK",
			  "GPIO12",
			  "GPIO13",
			  /* Serial port */
			  "TXD1",
			  "RXD1",		/* 15 */
			  "GPIO16",
			  "GPIO17",
			  "GPIO18",
			  "GPIO19",
			  "GPIO20",		/* 20 */
			  "GPIO21",
			  "GPIO22",
			  "GPIO23",
			  "GPIO24",
			  "GPIO25",		/* 25 */
			  "GPIO26",
			  "GPIO27",
			  "RGMII_MDIO",
			  "RGMIO_MDC",
			  /* Used by BT module */
			  "CTS0",		/* 30 */
			  "RTS0",
			  "TXD0",
			  "RXD0",
			  /* Used by Wifi */
			  "SD1_CLK",
			  "SD1_CMD",		/* 35 */
			  "SD1_DATA0",
			  "SD1_DATA1",
			  "SD1_DATA2",
			  "SD1_DATA3",
			  /* Shared with SPI flash */
			  "PWM0_MISO",		/* 40 */
			  "PWM1_MOSI",
			  "STATUS_LED_G_CLK",
			  "SPIFLASH_CE_N",
			  "SDA0",
			  "SCL0",		/* 45 */
			  "RGMII_RXCLK",
			  "RGMII_RXCTL",
			  "RGMII_RXD0",
			  "RGMII_RXD1",
			  "RGMII_RXD2",		/* 50 */
			  "RGMII_RXD3",
			  "RGMII_TXCLK",
			  "RGMII_TXCTL",
			  "RGMII_TXD0",
			  "RGMII_TXD1",		/* 55 */
			  "RGMII_TXD2",
			  "RGMII_TXD3";
};

&hdmi0 {
	status = "okay";
};

&hdmi1 {
	status = "okay";
};

&pixelvalve0 {
	status = "okay";
};

&pixelvalve1 {
	status = "okay";
};

&pixelvalve2 {
	status = "okay";
};

&pixelvalve4 {
	status = "okay";
};

&pwm1 {
	pinctrl-names = "default";
	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
	status = "okay";
};

/* EMMC2 is used to drive the SD card */
&emmc2 {
	vqmmc-supply = <&sd_io_1v8_reg>;
	vmmc-supply = <&sd_vcc_reg>;
	broken-cd;
	status = "okay";
};

&genet {
	phy-handle = <&phy1>;
	phy-mode = "rgmii-rxid";
	status = "okay";
};

&genet_mdio {
	phy1: ethernet-phy@1 {
		/* No PHY interrupt */
		reg = <0x1>;
	};
};

&pcie0 {
	pci@0,0 {
		device_type = "pci";
		#address-cells = <3>;
		#size-cells = <2>;
		ranges;

		reg = <0 0 0 0 0>;

		usb@0,0 {
			reg = <0 0 0 0 0>;
			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
		};
	};
};

/* uart0 communicates with the BT module */
&uart0 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
	uart-has-rtscts;
};

/* uart1 is mapped to the pin header */
&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_gpio14>;
	status = "okay";
};

&vc4 {
	status = "okay";
};

&vec {
	status = "disabled";
};

&wifi_pwrseq {
	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
};