dmesg

[38259.823326] Bluetooth: hci0: Device revision is 2
[38259.823327] Bluetooth: hci0: Secure boot is enabled
[38259.823327] Bluetooth: hci0: OTP lock is enabled
[38259.823328] Bluetooth: hci0: API lock is enabled
[38259.823328] Bluetooth: hci0: Debug lock is disabled
[38259.823329] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[38259.823545] Bluetooth: hci0: Found device firmware: intel/ibt-17-16-1.sfi
...
[38261.197376] Bluetooth: hci0: Waiting for firmware download to complete
[38261.198270] Bluetooth: hci0: Firmware loaded in 1344103 usecs
[38261.198314] Bluetooth: hci0: Waiting for device to boot
[38261.211305] Bluetooth: hci0: Device booted in 12693 usecs
[38261.211324] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-17-16-1.ddc
[38261.214379] Bluetooth: hci0: Applying Intel DDC parameters completed