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1Broadcom Bluetooth Chips
2---------------------
3
4This documents the binding structure and common properties for serial
5attached Broadcom devices.
6
7Serial attached Broadcom devices shall be a child node of the host UART
8device the slave device is attached to.
9
10Required properties:
11
12 - compatible: should contain one of the following:
13 * "brcm,bcm20702a1"
14 * "brcm,bcm4330-bt"
15 * "brcm,bcm43438-bt"
16
17Optional properties:
18
19 - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
20 - shutdown-gpios: GPIO specifier, used to enable the BT module
21 - device-wakeup-gpios: GPIO specifier, used to wakeup the controller
22 - host-wakeup-gpios: GPIO specifier, used to wakeup the host processor
23 - clocks: 1 or 2 clocks as defined in clock-names below, in that order
24 - clock-names: names for clock inputs, matching the clocks given
25 - "extclk": deprecated, replaced by "txco"
26 - "txco": external reference clock (not a standalone crystal)
27 - "lpo": external low power 32.768 kHz clock
28 - vbat-supply: phandle to regulator supply for VBAT
29 - vddio-supply: phandle to regulator supply for VDDIO
30
31
32Example:
33
34&uart2 {
35 pinctrl-names = "default";
36 pinctrl-0 = <&uart2_pins>;
37
38 bluetooth {
39 compatible = "brcm,bcm43438-bt";
40 max-speed = <921600>;
41 };
42};