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   * "qcom,wcn3998-bt"
15
16Optional properties for compatible string qcom,qca6174-bt:
17
18 - enable-gpios: gpio specifier used to enable chip
19 - clocks: clock provided to the controller (SUSCLK_32KHZ)
20 - firmware-name: specify the name of nvm firmware to load
21
22Required properties for compatible string qcom,wcn399x-bt:
23
24 - vddio-supply: VDD_IO supply regulator handle.
25 - vddxo-supply: VDD_XO supply regulator handle.
26 - vddrf-supply: VDD_RF supply regulator handle.
27 - vddch0-supply: VDD_CH0 supply regulator handle.
28
29Optional properties for compatible string qcom,wcn399x-bt:
30
31 - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
32 - firmware-name: specify the name of nvm firmware to load
33
34Examples:
35
36serial@7570000 {
37	label = "BT-UART";
38	status = "okay";
39
40	bluetooth {
41		compatible = "qcom,qca6174-bt";
42
43		enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
44		clocks = <&divclk4>;
45		firmware-name = "nvm_00440302.bin";
46	};
47};
48
49serial@898000 {
50	bluetooth {
51		compatible = "qcom,wcn3990-bt";
52
53		vddio-supply = <&vreg_s4a_1p8>;
54		vddxo-supply = <&vreg_l7a_1p8>;
55		vddrf-supply = <&vreg_l17a_1p3>;
56		vddch0-supply = <&vreg_l25a_3p3>;
57		max-speed = <3200000>;
58		firmware-name = "crnv21.bin";
59	};
60};
61