root@sync2000:/# ./chkusb.sh
chkusb.sh Version 0.2.6
Linux sync2000 4.14.67-gd315a9bb00 #38 PREEMPT Mon Jul 18 18:43:19 IST 2022 armv7l GNU/Linux
USB initialization failed
grep: /sys/kernel/debug/musb-hdrc*/regdump: No such file or directory
./chkusb.sh: line 377: warning: command substitution: ignored null byte in input
./chkusb.sh: line 378: warning: command substitution: ignored null byte in input
usb@47401000: otg, okay
./chkusb.sh: line 377: warning: command substitution: ignored null byte in input
./chkusb.sh: line 378: warning: command substitution: ignored null byte in input
usb@47401800: host, okay
./chkusb.sh: line 303: warning: command substitution: ignored null byte in input
./chkusb.sh: line 303: warning: command substitution: ignored null byte in input
./chkusb.sh: line 303: warning: command substitution: ignored null byte in input
./chkusb.sh: line 303: warning: command substitution: ignored null byte in input
./chkusb.sh: line 303: warning: command substitution: ignored null byte in input
./chkusb.sh: line 305: warning: command substitution: ignored null byte in input
dma-controller@47402000: disabled

Gadget Kernel Config: g_zero is enabled
Gadget Kernel Config: g_audio is enabled
Gadget Kernel Config: g_ether is enabled
Gadget Kernel Config: g_ncm is enabled
Gadget Kernel Config: g_mass_storage is enabled
Gadget Kernel Config: g_serial is enabled
Gadget Kernel Config: g_printer is enabled
gadget driver loaded: (none)

The list of USB gadget drivers installed:
/lib/modules/4.14.67-gd315a9bb00/kernel/drivers/usb/gadget/:
function/
legacy/
libcomposite.ko
udc/

/lib/modules/4.14.67-gd315a9bb00/kernel/drivers/usb/gadget/function:
u_audio.ko
u_ether.ko
u_serial.ko
usb_f_acm.ko
usb_f_ecm.ko
usb_f_ecm_subset.ko
usb_f_eem.ko
usb_f_fs.ko
usb_f_hid.ko
usb_f_mass_storage.ko
usb_f_midi.ko
usb_f_ncm.ko
usb_f_obex.ko
usb_f_printer.ko
usb_f_rndis.ko
usb_f_serial.ko
usb_f_ss_lb.ko
usb_f_uac1.ko
usb_f_uac2.ko
usb_f_uvc.ko

/lib/modules/4.14.67-gd315a9bb00/kernel/drivers/usb/gadget/legacy:
g_acm_ms.ko
g_audio.ko
g_cdc.ko
g_dbgp.ko
g_ether.ko
g_ffs.ko
g_hid.ko
g_mass_storage.ko
g_midi.ko
g_multi.ko
g_ncm.ko
g_printer.ko
g_serial.ko
g_webcam.ko
g_zero.ko
gadgetfs.ko

/lib/modules/4.14.67-gd315a9bb00/kernel/drivers/usb/gadget/udc:
udc-core.ko
root@sync2000:/#