[850534.033893] usb 2-2.2: new full-speed USB device number 5 using uhci_hcd
[850534.359950] usb 2-2.2: New USB device found, idVendor=0a5c, idProduct=21ec
[850534.359954] usb 2-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[850534.359955] usb 2-2.2: Product: BCM20702A0
[850534.359956] usb 2-2.2: Manufacturer: Broadcom Corp
[850534.359957] usb 2-2.2: SerialNumber: 001986003A34
[850534.752681] Bluetooth: Core ver 2.19
[850534.752707] NET: Registered protocol family 31
[850534.752708] Bluetooth: HCI device and connection manager initialized
[850534.752717] Bluetooth: HCI socket layer initialized
[850534.752718] Bluetooth: L2CAP socket layer initialized
[850534.752730] Bluetooth: SCO socket layer initialized
[850534.995079] usbcore: registered new interface driver btusb
[850534.996150] bluetooth hci0: firmware: failed to load brcm/BCM20702A0-0a5c-21ec.hcd (-2)
[850534.997107] bluetooth hci0: Direct firmware load failed with error -2
[850534.997108] bluetooth hci0: Falling back to user helper
[850534.997670] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-21ec.hcd not found