Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt

   1 Qualcomm Bluetooth Chips
   2 ---------------------
   3
   4 This documents the binding structure and common properties for serial
   5 attached Qualcomm devices.
   6
   7 Serial attached Qualcomm devices shall be a child node of the host UART
   8 device the slave device is attached to.
   9
  10 Required 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
  17 Optional 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
  23 Required 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
  30 Optional properties for compatible string qcom,wcn399x-bt:
  31
  32  - max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
  33  - firmware-name: specify the name of nvm firmware to load
  34  - clocks: clock provided to the controller
  35
  36 Examples:
  37
  38 serial@7570000 {
  39         label = "BT-UART";
  40         status = "okay";
  41
  42         bluetooth {
  43                 compatible = "qcom,qca6174-bt";
  44
  45                 enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
  46                 clocks = <&divclk4>;
  47                 firmware-name = "nvm_00440302.bin";
  48         };
  49 };
  50
  51 serial@898000 {
  52         bluetooth {
  53                 compatible = "qcom,wcn3990-bt";
  54
  55                 vddio-supply = <&vreg_s4a_1p8>;
  56                 vddxo-supply = <&vreg_l7a_1p8>;
  57                 vddrf-supply = <&vreg_l17a_1p3>;
  58                 vddch0-supply = <&vreg_l25a_3p3>;
  59                 max-speed = <3200000>;
  60                 firmware-name = "crnv21.bin";
  61                 clocks = <&rpmhcc RPMH_RF_CLK2>;
  62         };
  63 };