u-boot-brain/arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
 *
 * Based on sun8i-h3-bananapi-m2-plus.dts, which is:
 *   Copyright (C) 2016 Chen-Yu Tsai <wens@csie.org>
 */

/dts-v1/;
#include "sun8i-h3.dtsi"
#include "sunxi-common-regulators.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

/ {
	model = "Banana Pi BPI-M2-Zero";
	compatible = "sinovoip,bpi-m2-zero", "allwinner,sun8i-h2-plus";

	aliases {
		serial0 = &uart0;
		serial1 = &uart1;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	leds {
		compatible = "gpio-leds";

		pwr_led {
			label = "bananapi-m2-zero:red:pwr";
			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
			default-state = "on";
		};
	};

	gpio_keys {
		compatible = "gpio-keys";

		sw4 {
			label = "power";
			linux,code = <BTN_0>;
			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>;
		};
	};

	reg_vdd_cpux: vdd-cpux-regulator {
		compatible = "regulator-gpio";
		regulator-name = "vdd-cpux";
		regulator-type = "voltage";
		regulator-boot-on;
		regulator-always-on;
		regulator-min-microvolt = <1100000>;
		regulator-max-microvolt = <1300000>;
		regulator-ramp-delay = <50>; /* 4ms */

		gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL1 */
		enable-active-high;
		gpios-states = <0x1>;
		states = <1100000 0>, <1300000 1>;
	};

	wifi_pwrseq: wifi_pwrseq {
		compatible = "mmc-pwrseq-simple";
		reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
		clocks = <&rtc 1>;
		clock-names = "ext_clock";
	};
};

&cpu0 {
	cpu-supply = <&reg_vdd_cpux>;
};

&ehci0 {
	status = "okay";
};

&mmc0 {
	vmmc-supply = <&reg_vcc3v3>;
	bus-width = <4>;
	/*
	 * On the production batch of this board the card detect GPIO is
	 * high active (card inserted), although on the early samples it's
	 * low active.
	 */
	cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
	status = "okay";
};

&mmc1 {
	vmmc-supply = <&reg_vcc3v3>;
	vqmmc-supply = <&reg_vcc3v3>;
	mmc-pwrseq = <&wifi_pwrseq>;
	bus-width = <4>;
	non-removable;
	status = "okay";

	brcmf: wifi@1 {
		reg = <1>;
		compatible = "brcm,bcm4329-fmac";
		interrupt-parent = <&pio>;
		interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 / EINT10 */
		interrupt-names = "host-wake";
	};
};

&ohci0 {
	status = "okay";
};

&uart0 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart0_pa_pins>;
	status = "okay";
};

&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
	uart-has-rtscts;
	status = "okay";

	bluetooth {
		compatible = "brcm,bcm43438-bt";
		clocks = <&rtc 1>;
		clock-names = "lpo";
		vbat-supply = <&reg_vcc3v3>;
		vddio-supply = <&reg_vcc3v3>;
		device-wakeup-gpios = <&pio 6 13 GPIO_ACTIVE_HIGH>; /* PG13 */
		host-wakeup-gpios = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
		shutdown-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
	};

};

&usb_otg {
	dr_mode = "otg";
	status = "okay";
};

&usbphy {
	usb0_id_det-gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
	/*
	 * There're two micro-USB connectors, one is power-only and another is
	 * OTG. The Vbus of these two connectors are connected together, so
	 * the external USB device will be powered just by the power input
	 * from the power-only USB port.
	 */
	status = "okay";
};