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   * "brcm,bcm4345c5"
17
18Optional properties:
19
20 - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
21 - shutdown-gpios: GPIO specifier, used to enable the BT module
22 - device-wakeup-gpios: GPIO specifier, used to wakeup the controller
23 - host-wakeup-gpios: GPIO specifier, used to wakeup the host processor
24 - clocks: 1 or 2 clocks as defined in clock-names below, in that order
25 - clock-names: names for clock inputs, matching the clocks given
26   - "extclk": deprecated, replaced by "txco"
27   - "txco": external reference clock (not a standalone crystal)
28   - "lpo": external low power 32.768 kHz clock
29 - vbat-supply: phandle to regulator supply for VBAT
30 - vddio-supply: phandle to regulator supply for VDDIO
31
32
33Example:
34
35&uart2 {
36       pinctrl-names = "default";
37       pinctrl-0 = <&uart2_pins>;
38
39       bluetooth {
40               compatible = "brcm,bcm43438-bt";
41               max-speed = <921600>;
42       };
43};
44