Boot Log

creating qcqmi0
++ /sbin/automount_lte.sh: qcqmi0, qcqmi0, add, 
=====================
usb device: usbdev1.2
path: 
vendor: 05c6
product: 9026
manufacturer: Askey LTE module

Log From /sys/class

# ls -la /sys/class/usb_device/
lrwxrwxrwx    1 0        0               0 usbdev2.1 -> ../../devices/platform/rt3xxx-ohci/usb2/usb_device/usbdev2.1
lrwxrwxrwx    1 0        0               0 usbdev1.1 -> ../../devices/platform/rt3xxx-ehci/usb1/usb_device/usbdev1.1
drwxr-xr-x   20 0        0               0 ..
drwxr-xr-x    2 0        0               0 .

USB ACM driver

# ls -al /sys/class/tty/*/device/driver
lrwxrwxrwx    1 0        0               0 /sys/class/tty/ttyS1/device/driver -> ../../../bus/platform/drivers/serial8250
lrwxrwxrwx    1 0        0               0 /sys/class/tty/ttyS0/device/driver -> ../../../bus/platform/drivers/serial8250
lrwxrwxrwx    1 0        0               0 /sys/class/tty/ttyACM1/device/driver -> ../../../../../../bus/usb/drivers/cdc_acm
lrwxrwxrwx    1 0        0               0 /sys/class/tty/ttyACM0/device/driver -> ../../../../../../bus/usb/drivers/cdc_acm
#