Documentation/devicetree/bindings/bluetooth/btfm_slim.txt

* BTFM Slimbus Slave Driver
BTFM Slimbus Slave driver configure and initialize slimbus slave device.
Bluetooth SCO and FM Audio data is transferred over slimbus interface.

Required properties:
  - compatible: Should be set to one of the following:
     btfmslim_slave
  - qcom,btfm-slim-ifd: BTFM slimbus slave device entry name

Optional properties:
  - qcom,btfm-slim-ifd-elemental-addr: BTFM slimbus slave device enumeration
  address

Example:
  btfmslim_codec: wcn3990 {
    compatible = "qcom,btfmslim_slave";
    elemental-addr = [00 01 20 02 17 02];
    qcom,btfm-slim-ifd = "btfmslim_slave_ifd";
    qcom,btfm-slim-ifd-elemental-addr = [00 00 20 02 17 02];
  };