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AM335x bare-metal USB driver

Hello,

I have a customer who has encountered an issue where the USB Core registers which are apparently undocumented in the TRM yet these registers are heavily used in Starter Ware. It almost seems as if some of the starter ware registers are overlapping over other defined TRM USB spaces. 

Originally we assumed what we need to resolve this is the AM335x specific USB0 & USB1 core register definitions (implemented by Mentor Graphics). But since this documentation is unavailable, we will need to find a work-around.

Have you heard of others working to write their own drivers in the past and encountering this issue? How do we circumnavigate it?

Thanks so much for your time,

-Amanda