Documentation/devicetree/bindings/net/mediatek-bluetooth.txt

MediaTek SoC built-in Bluetooth Devices
==================================

This device is a serial attached device to BTIF device and thus it must be a
child node of the serial node with BTIF. The dt-bindings details for BTIF
device can be known via Documentation/devicetree/bindings/serial/8250.txt.

Required properties:

- compatible:	Must be
		  "mediatek,mt7622-bluetooth": for MT7622 SoC
- clocks:	Should be the clock specifiers corresponding to the entry in
		clock-names property.
- clock-names:	Should contain "ref" entries.
- power-domains: Phandle to the power domain that the device is part of

Example:

	btif: serial@1100c000 {
		compatible = "mediatek,mt7622-btif",
			     "mediatek,mtk-btif";
		reg = <0 0x1100c000 0 0x1000>;
		interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_LOW>;
		clocks = <&pericfg CLK_PERI_BTIF_PD>;
		clock-names = "main";
		reg-shift = <2>;
		reg-io-width = <4>;

		bluetooth {
			compatible = "mediatek,mt7622-bluetooth";
			power-domains = <&scpsys MT7622_POWER_DOMAIN_WB>;
			clocks = <&clk25m>;
			clock-names = "ref";
		};
	};

MediaTek UART based Bluetooth Devices
==================================

This device is a serial attached device to UART device and thus it must be a
child node of the serial node with UART.

Please refer to the following documents for generic properties:

	Documentation/devicetree/bindings/serial/slave-device.txt

Required properties:

- compatible:	Must be
		  "mediatek,mt7663u-bluetooth": for MT7663U device
		  "mediatek,mt7668u-bluetooth": for MT7668U device
- vcc-supply:	Main voltage regulator
- pinctrl-names: Should be "default", "runtime"
- pinctrl-0: Should contain UART RXD low when the device is powered up to
	     enter proper bootstrap mode.
- pinctrl-1: Should contain UART mode pin ctrl

Optional properties:

- reset-gpios:	GPIO used to reset the device whose initial state keeps low,
		if the GPIO is missing, then board-level design should be
		guaranteed.
- current-speed:  Current baud rate of the device whose defaults to 921600

Example:

	uart1_pins_boot: uart1-default {
		pins-dat {
			pinmux = <MT7623_PIN_81_URXD1_FUNC_GPIO81>;
			output-low;
		};
	};

	uart1_pins_runtime: uart1-runtime {
		pins-dat {
			pinmux = <MT7623_PIN_81_URXD1_FUNC_URXD1>,
				 <MT7623_PIN_82_UTXD1_FUNC_UTXD1>;
		};
	};

	uart1: serial@11003000 {
		compatible = "mediatek,mt7623-uart",
			     "mediatek,mt6577-uart";
		reg = <0 0x11003000 0 0x400>;
		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
		clocks = <&pericfg CLK_PERI_UART1_SEL>,
			 <&pericfg CLK_PERI_UART1>;
		clock-names = "baud", "bus";

		bluetooth {
			compatible = "mediatek,mt7663u-bluetooth";
			vcc-supply = <&reg_5v>;
			reset-gpios = <&pio 24 GPIO_ACTIVE_LOW>;
			pinctrl-names = "default", "runtime";
			pinctrl-0 = <&uart1_pins_boot>;
			pinctrl-1 = <&uart1_pins_runtime>;
			current-speed = <921600>;
		};
	};