debian/imx-firmware.btfw_loader.service

[Unit]
Description=Bluetooth firmware loader
After=sysinit.target local-fs.target
DefaultDependencies=no

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/bin/hciattach /dev/ttymxc1 qca 3000000 flow -b -t 120

[Install]
WantedBy=basic.target