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| author |   Sean Wang <sean.wang@mediatek.com> | 2019-06-02 09:04:14 +0800 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2019-07-06 13:00:04 +0200 |
| commit | 1c576f385a440cd8790516d6227235b4161c6668 (patch) | |
| tree | 3710f884f5989f39d1392d2b2407356f552ee2df /Documentation/devicetree/bindings/net/mediatek-bluetooth.txt | |
| parent | Bluetooth: btbcm: Add entry for BCM4359C0 UART bluetooth (diff) | |
| download | linux-dev-1c576f385a440cd8790516d6227235b4161c6668.tar.xz linux-dev-1c576f385a440cd8790516d6227235b4161c6668.zip | |
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: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/devicetree/bindings/net/mediatek-bluetooth.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt index 41a7dcc80f5b..14f23b354a6d 100644 --- a/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt +++ b/Documentation/devicetree/bindings/net/mediatek-bluetooth.txt @@ -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, |