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dt-bindings: net: bluetooth: add support for MediaTek MT7663U and MT7668U UART devices

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

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Sean Wang 2019-03-01 10:14:07 +08:00 committed by Marcel Holtmann
parent 94d6671473
commit b805c403c8
1 changed files with 64 additions and 0 deletions
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64
Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
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@ -33,3 +33,67 @@ Example:
clock-names = "ref"; 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>;
};
};