Hi @carlos_o
we are using zephyr testusb sample in Linux for testing. when using the evk we can see the device enumeration and, we can run the usb tests. but when we try to use the custom bord we are getting enumeration error see below dmesg log from the host side.
[1115238.671144] usb 1-2: new high-speed USB device number 36 using xhci_hcd
[1115238.785192] usb 1-2: device descriptor read/64, error -71
[1115239.003075] usb 1-2: device descriptor read/64, error -71
[1115239.219143] usb 1-2: new high-speed USB device number 37 using xhci_hcd
[1115239.333176] usb 1-2: device descriptor read/64, error -71
[1115239.555205] usb 1-2: device descriptor read/64, error -71
[1115239.657153] usb usb1-port2: attempt power cycle
[1115240.037109] usb 1-2: new high-speed USB device number 38 using xhci_hcd
[1115240.037252] usb 1-2: Device not responding to setup address.
[1115240.241247] usb 1-2: Device not responding to setup address.
[1115240.449124] usb 1-2: device not accepting address 38, error -71
[1115240.562935] usb 1-2: new high-speed USB device number 39 using xhci_hcd
[1115240.563074] usb 1-2: Device not responding to setup address.
[1115240.769196] usb 1-2: Device not responding to setup address.
[1115240.977079] usb 1-2: device not accepting address 39, error -71
[1115240.977312] usb usb1-port2: unable to enumerate USB device
Indicating that device in this case custom board is not responding to setup packet from Host