[U-Boot] MUSB driver vs MUSB-NEW Confusion/Questions

[Adam Ford]

It seems like we have two similar drivers for the same MUSB device.
Looking through the code, it appears as if mostly OMAP3 related boards
use the older MUSB driver, but other boards use the MUSB-NEW driver
which lead me to a few questions.

What is the differrence between them?

Is there a reason OMAP3 boards cannot or should not port to NEW-MUSB?
What is needed in order to make this migration for OMAP3 boards?

adam