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

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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: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Sean Wang 2019-06-02 09:04:14 +08:00 committed by Marcel Holtmann
parent f4d297eec6
commit 1c576f385a
1 changed files with 13 additions and 0 deletions
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13
Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
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@ -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,