About the USB Gadget Legacy Method

Hello, Jack and Radxa team members

I have confirmed the g_ether gadget working with LINUX HOST PC.

But the other legacy methods, listed below, seem not to be working.

g_audio
g_webcam
g_mass_storage

Is it necessary to add some more configure to “usb0”?
If that’s mandatory, can you please share some reference?
Will be waiting for your reply.

Thanks!