Is there any document for Configuring USB on i.MX 25 Processor. I have found a similar document for iMX6 ( "Configuring USB on i.MX 6 Series Processors"). I wonder if any such document exists for iMX 25 series or iMX257 specifically.
Section 24 of the Linux Reference Manual BSP for i.Mx25, shows the software operation for the USB driver, which implements the USB protocols, it migth be helpful for your case.
