Hi,   I'm trying to use bluetooth with the Mainline 4.11.9-sun8i armbian kernel (I also tried 4.11.7-sun8i).   I activated ttyS3 (uart3) in armbianEnv.txt:   verbosity=1 logo=disabled console=serial overlay_prefix=sun8i-h3 rootdev=UUID=59c35982-ddad-4bf0-8b72-a8974bfe88a6 rootfstype=ext4 overlays=uart3 spi-spidev param_uart3_rtscts=1 param_spidev_spi_bus=0 Unfortunately hciconfig -a does not find any device.   I already tried to set the baudrate but no c