isp1763 usb host controller driver

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Hello,

I am a usb-newbie and trying to bring up an isp1763 (host-controller) device connected to the local bus of a
Freescale MPC8360E.  Looking at the datasheet and provided driver code for both the isp1761 and isp1763,
I am getting the feeling that the devices are similar in partnumber only. (e.g. the register map is very different).

Questions:

1. I am getting hints from the git-commit messages that at some point a similarly modified pehci driver
   from the vendor existed for isp176[0|1] and this is the basis for the isp1760-* driver in linux.
   is this correct? if so, what prompted the re-write? If someone has notes on this, I hope to follow it
   to port the pehci-style driver to an isp176e-* style driver.

2. Is there any hope of expanding isp1760-* to cover isp1763 or should one just create isp1763-* files
   using the isp1760 driver as a starting point. They look different enough to make me think so.
   will such a patch be accepted?

3. Any chance someone (from the vendor) have attempted to make a isp1760-style driver for isp1763?

Any pointers is much appreciated.

Thanks for everyone's time

- Richard Retanubun
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