1Qualcomm Bluetooth Chips
2---------------------
3
4This documents the binding structure and common properties for serial
5attached Qualcomm devices.
6
7Serial attached Qualcomm devices shall be a child node of the host UART
8device the slave device is attached to.
9
10Required properties:
11 - compatible: should contain one of the following:
12   * "qcom,qca6174-bt"
13   * "qcom,wcn3990-bt"
14
15Optional properties for compatible string qcom,qca6174-bt:
16
17 - enable-gpios: gpio specifier used to enable chip
18 - clocks: clock provided to the controller (SUSCLK_32KHZ)
19
20Required properties for compatible string qcom,wcn3990-bt:
21
22 - vddio-supply: VDD_IO supply regulator handle.
23 - vddxo-supply: VDD_XO supply regulator handle.
24 - vddrf-supply: VDD_RF supply regulator handle.
25 - vddch0-supply: VDD_CH0 supply regulator handle.
26
27Optional properties for compatible string qcom,wcn3990-bt:
28
29 - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
30
31Examples:
32
33serial@7570000 {
34	label = "BT-UART";
35	status = "okay";
36
37	bluetooth {
38		compatible = "qcom,qca6174-bt";
39
40		enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
41		clocks = <&divclk4>;
42	};
43};
44
45serial@898000 {
46	bluetooth {
47		compatible = "qcom,wcn3990-bt";
48
49		vddio-supply = <&vreg_s4a_1p8>;
50		vddxo-supply = <&vreg_l7a_1p8>;
51		vddrf-supply = <&vreg_l17a_1p3>;
52		vddch0-supply = <&vreg_l25a_3p3>;
53		max-speed = <3200000>;
54	};
55};
56