From b805c403c859756175fefc213065125da16b808d Mon Sep 17 00:00:00 2001 From: Sean Wang Date: Fri, 1 Mar 2019 10:14:07 +0800 Subject: [PATCH] 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: Rob Herring Signed-off-by: Sean Wang Signed-off-by: Marcel Holtmann --- .../bindings/net/mediatek-bluetooth.txt | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt index 14ceb2a5b4e8..41a7dcc80f5b 100644 --- a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt +++ b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt @@ -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 = ; + output-low; + }; + }; + + uart1_pins_runtime: uart1-runtime { + pins-dat { + pinmux = , + ; + }; + }; + + uart1: serial@11003000 { + compatible = "mediatek,mt7623-uart", + "mediatek,mt6577-uart"; + reg = <0 0x11003000 0 0x400>; + interrupts = ; + clocks = <&pericfg CLK_PERI_UART1_SEL>, + <&pericfg CLK_PERI_UART1>; + clock-names = "baud", "bus"; + + bluetooth { + compatible = "mediatek,mt7663u-bluetooth"; + vcc-supply = <®_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>; + }; + }; -- 2.34.1