I have a SC589 EZLITE board running the linux add on and I am trying to use the USB_OTG port as a host and the USB_HS port as a device. The host port seems to be working fine. I connect a hub to it and it recognizes the hub and loads its driver. I have the host port connected to the upstream port of the hub and the device port connected to the downstream port and I am trying to run testusb.c code to test the device port with the gadget zero driver. But when I connect the device port the host doesn't seem to recognize any usb device was connected. When I run modprobe g_zero, I get no response. Could anyone explain what I need to do to get the USB_HS port working with the gadget zero driver in this setup?