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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,wcn3991-bt"
15 * "qcom,wcn3998-bt"
16
17Optional properties for compatible string qcom,qca6174-bt:
18
19 - enable-gpios: gpio specifier used to enable chip
20 - clocks: clock provided to the controller (SUSCLK_32KHZ)
21 - firmware-name: specify the name of nvm firmware to load
22
23Required properties for compatible string qcom,wcn399x-bt:
24
25 - vddio-supply: VDD_IO supply regulator handle.
26 - vddxo-supply: VDD_XO supply regulator handle.
27 - vddrf-supply: VDD_RF supply regulator handle.
28 - vddch0-supply: VDD_CH0 supply regulator handle.
29
30Optional properties for compatible string qcom,wcn399x-bt:
31
32 - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
33 - firmware-name: specify the name of nvm firmware to load
34
35Examples:
36
37serial@7570000 {
38 label = "BT-UART";
39 status = "okay";
40
41 bluetooth {
42 compatible = "qcom,qca6174-bt";
43
44 enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
45 clocks = <&divclk4>;
46 firmware-name = "nvm_00440302.bin";
47 };
48};
49
50serial@898000 {
51 bluetooth {
52 compatible = "qcom,wcn3990-bt";
53
54 vddio-supply = <&vreg_s4a_1p8>;
55 vddxo-supply = <&vreg_l7a_1p8>;
56 vddrf-supply = <&vreg_l17a_1p3>;
57 vddch0-supply = <&vreg_l25a_3p3>;
58 max-speed = <3200000>;
59 firmware-name = "crnv21.bin";
60 };
61};