What: /config/usb-gadget/gadget/functions/acm.name
Date: Jun 2013
KernelVersion: 3.11
Description:
This item contains just one readonly attribute: port_num.
It contains the port number of the /dev/ttyGS<n> device
associated with acm function's instance "name".
What: /config/usb-gadget/gadget/functions/acm.name/protocol
Date: Aug 2024
KernelVersion: 6.13
Description:
Reported bInterfaceProtocol for the ACM device. For legacy
reasons, this defaults to 1 (USB_CDC_ACM_PROTO_AT_V25TER).