Linux/AM5728: USB Interface

Part Number:AM5728

Tool/software: Linux

Hi 

Can some one please help me how to use USB interface in AM5728 EVM as device mode to communicate with the other end processor(4G module sierra wireless) which is in USB host mode.

I have gone through the USB training series in TI website. There it is something to use DWC3 as dual role device

Now my doubt is what are the API's to be called for USB configuration as in device mode to communicate (write files from SD Card)  with other end processor(4G module sierra wireless).

Do we need any hardware/software modifications?

Thanks,

Jahnavi