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,qca9377-bt"
  14    * "qcom,wcn3990-bt"
  15    * "qcom,wcn3991-bt"
  16    * "qcom,wcn3998-bt"
  17    * "qcom,qca6390-bt"
  18
  19 Optional properties for compatible string qcom,qca6174-bt:
  20
  21  - enable-gpios: gpio specifier used to enable chip
  22  - clocks: clock provided to the controller (SUSCLK_32KHZ)
  23  - firmware-name: specify the name of nvm firmware to load
  24
  25 Optional properties for compatible string qcom,qca9377-bt:
  26
  27  - max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
  28
  29 Required properties for compatible string qcom,wcn399x-bt:
  30
  31  - vddio-supply: VDD_IO supply regulator handle.
  32  - vddxo-supply: VDD_XO supply regulator handle.
  33  - vddrf-supply: VDD_RF supply regulator handle.
  34  - vddch0-supply: VDD_CH0 supply regulator handle.
  35
  36 Optional properties for compatible string qcom,wcn399x-bt:
  37
  38  - max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
  39  - firmware-name: specify the name of nvm firmware to load
  40  - clocks: clock provided to the controller
  41
  42 Examples:
  43
  44 serial@7570000 {
  45         label = "BT-UART";
  46         status = "okay";
  47
  48         bluetooth {
  49                 compatible = "qcom,qca6174-bt";
  50
  51                 enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
  52                 clocks = <&divclk4>;
  53                 firmware-name = "nvm_00440302.bin";
  54         };
  55 };
  56
  57 serial@898000 {
  58         bluetooth {
  59                 compatible = "qcom,wcn3990-bt";
  60
  61                 vddio-supply = <&vreg_s4a_1p8>;
  62                 vddxo-supply = <&vreg_l7a_1p8>;
  63                 vddrf-supply = <&vreg_l17a_1p3>;
  64                 vddch0-supply = <&vreg_l25a_3p3>;
  65                 max-speed = <3200000>;
  66                 firmware-name = "crnv21.bin";
  67                 clocks = <&rpmhcc RPMH_RF_CLK2>;
  68         };
  69 };