The jq-bt Bluetooth driver is one of several Bluetooth drivers available. Here's a brief comparison:
Example device tree overlay for Raspberry Pi ( jq-bt-overlay.dts ): jq-bt bluetooth driver
Most of these devices utilize standard from manufacturers like CSR (Cambridge Silicon Radio) , Broadcom , or Realtek . They generally do not require a specific, proprietary driver CD to function. The jq-bt Bluetooth driver is one of several
Then, at 2:17 AM, a whisper.
Application → BlueZ (libbluetooth) → HCI Socket → hci_uart.ko → UART driver → JQ-BT hardware proprietary driver CD to function. Then