Commit 1c576f38 authored by Sean Wang's avatar Sean Wang Committed by Marcel Holtmann
Browse files

dt-bindings: net: bluetooth: add boot-gpios property to UART-based device 



Not every platform has the pinctrl device integrates the GPIO the function
such as MT7621 whose pinctrl and GPIO are separate hardware so adding an
additional boot-gpios property for such platform allows them to bring up
the device.

Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent f4d297ee

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

+13 −0
Original line number Diff line number Diff line
@@ -50,11 +50,24 @@ Required properties: 
		  "mediatek,mt7663u-bluetooth": for MT7663U device

		  "mediatek,mt7668u-bluetooth": for MT7668U device

- vcc-supply:	Main voltage regulator



If the pin controller on the platform can support both pinmux and GPIO

control such as the most of MediaTek platform. Please use below properties.



- 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



Else, the pin controller on the platform only can support pinmux control and

the GPIO control still has to rely on the dedicated GPIO controller such as

a legacy MediaTek SoC, MT7621. Please use the below properties.



- boot-gpios:	GPIO same to the pin as UART RXD and used to keep LOW when

		the device is powered up to enter proper bootstrap mode when

- pinctrl-names: Should be "default"

- pinctrl-0: Should contain UART mode pin ctrl



Optional properties:



- reset-gpios:	GPIO used to reset the device whose initial state keeps low,

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