Commit b805c403 authored by Sean Wang's avatar Sean Wang Committed by Marcel Holtmann
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dt-bindings: net: bluetooth: add support for MediaTek MT7663U and MT7668U UART devices 



Update binding document with adding support of MT7663U and MT7668U UART
devices to mediatek-bluetooth.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 94d66714

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

+64 −0
Original line number Diff line number Diff line
@@ -33,3 +33,67 @@ Example: 
			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>;

		};

	};