USB 2.0 Host controller chip for Linux

Hi,

I have some confusion over the degree of SW/HW interaction in USB Host
controllers.

I have an FPGA design which runs Windriver Linux. I would like to add
to the PCB a USB 2.0 host controller chip whose sole purpose in life
is to perform everything required to get from the PHY to EHCI. I would
then like to map the EHCI registers to the Linux kernel; so that I
should not have to write a device driver. Linux should handle the
majority of the USB protocol's signalling and the chip the majority of
the physical layer stuff.

Is the above valid?

It seems, however, that whenever I try and search for such a chip, I
either get 1) monolithic peripheral/device chip (that I do not want)
2) Host chips with a PCI interface (which are okay, but I would like
one specifically designed with a host interface), 3) Some intermediate
chip, either a USB host but without the EHCI interface, or a large and
costly microcontroller.

The question I have therefore is that, given my understanding of the
problem and assuming it is correct, what chip can I get to fit this
role?

Kind regards,

Stephen
.

Relevant Pages

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