root@am57xx-evm:~# ./chkusb.sh 
chkusb.sh Version 0.2.4
Linux am57xx-evm 4.14.40-rt29-gd5443cbd3b #1 SMP PREEMPT RT Wed Oct 24 12:46:39 CEST 2018 armv7l GNU/Linux
USB initialization failed
Warning: CONFIG_USB_OTG undefined, which is required for DRD mode.
Error: /lib/modules/4.14.40-rt29-gd5443cbd3b/modules.dep seems to be valid,
       but xhci-plat-hcd.ko is not loaded.
       Please provide /proc/config.gz and /lib/module/4.14.40-rt29-gd5443cbd3b/*
       for further investigation.
Error: /lib/modules/4.14.40-rt29-gd5443cbd3b/modules.dep seems to be valid,
       but xhci-hcd.ko is not loaded.
       Please provide /proc/config.gz and /lib/module/4.14.40-rt29-gd5443cbd3b/*
       for further investigation.
./chkusb.sh: line 320: warning: command substitution: ignored null byte in input
./chkusb.sh: line 321: warning: command substitution: ignored null byte in input
usb@48890000: otg, disabled
./chkusb.sh: line 320: warning: command substitution: ignored null byte in input
./chkusb.sh: line 321: warning: command substitution: ignored null byte in input
usb@488d0000: peripheral, okay

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/4.14.40-rt29-gd5443cbd3b/kernel/drivers/usb/gadget/:
function/
legacy/
libcomposite.ko
udc/

/lib/modules/4.14.40-rt29-gd5443cbd3b/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/4.14.40-rt29-gd5443cbd3b/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/4.14.40-rt29-gd5443cbd3b/kernel/drivers/usb/gadget/udc:
udc-core.ko
root@am57xx-evm:~#  
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# modprobe g_ether
[  104.674081] udc-core: couldn't find an available UDC - added [g_ether] to list of pending drivers
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# 
root@am57xx-evm:~# ./chkusb.sh 
chkusb.sh Version 0.2.4
Linux am57xx-evm 4.14.40-rt29-gd5443cbd3b #1 SMP PREEMPT RT Wed Oct 24 12:46:39 CEST 2018 armv7l GNU/Linux
USB initialization failed
Warning: CONFIG_USB_OTG undefined, which is required for DRD mode.
Error: /lib/modules/4.14.40-rt29-gd5443cbd3b/modules.dep seems to be valid,
       but xhci-plat-hcd.ko is not loaded.
       Please provide /proc/config.gz and /lib/module/4.14.40-rt29-gd5443cbd3b/*
       for further investigation.
Error: /lib/modules/4.14.40-rt29-gd5443cbd3b/modules.dep seems to be valid,
       but xhci-hcd.ko is not loaded.
       Please provide /proc/config.gz and /lib/module/4.14.40-rt29-gd5443cbd3b/*
       for further investigation.
./chkusb.sh: line 320: warning: command substitution: ignored null byte in input
./chkusb.sh: line 321: warning: command substitution: ignored null byte in input
usb@48890000: otg, disabled
./chkusb.sh: line 320: warning: command substitution: ignored null byte in input
./chkusb.sh: line 321: warning: command substitution: ignored null byte in input
usb@488d0000: peripheral, okay

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/4.14.40-rt29-gd5443cbd3b/kernel/drivers/usb/gadget/:
function/
legacy/
libcomposite.ko
udc/

/lib/modules/4.14.40-rt29-gd5443cbd3b/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/4.14.40-rt29-gd5443cbd3b/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/4.14.40-rt29-gd5443cbd3b/kernel/drivers/usb/gadget/udc:
udc-core.ko
root@am57xx-evm:~#