Re: [PATCH 1/2] MIPS: Octeon: Add USB platform device.

[David Daney <ddaney@caviumnetworks.com>]

Stefan Roese wrote:
> On Thursday 08 October 2009 23:03:37 David Daney wrote:
>> If you look at '[PATCH 2/2] USB: Add HCD for Octeon SOC', you will see
>> that it has the hcd support.  I have omitted pcd support from this set,
>> as I am working towards getting hcd mergable first.
>>
>> As for endian issues, the current Octeon support in the kernel is for
>> big-endian only, so since the usb hardware is on the same chip as the
>> CPU, endian safety is not currently an issue.  I have heard rumors that
>> some ralink and PPC variants have the same controller, but I have no way
>> of confirming this or even testing the code as I don't have that
>> hardware.
> 
> Yes, this Synopsys USB-OTG core is also integrated in some AMCC (Applied 
> Micro) PowerPC's (e.g. PPC405EX and PPC460EX). So we should try to make this 
> driver usable by those platforms as well. But this could be done in a later 
> step.

I can only refer you to '[PATCH 2/2] USB: Add HCD for Octeon SOC' 
(unfortunately eaten by linux-usb but available in the linux-mips 
archives),  The target specific code is all in dwc_otg_octeon.c.  The 
rest should be target independent.  My expectation is that, much as the 
ohci and ehci drivers have target specific code spilt out, we would do 
the same with dwc_otg.


> 
> David, on which Synopsys driver version did you base your driver? The latest 
> version available is 2.90a IIRC.
>

It has this annotation:

  "2.40a 10-APR-2006"

We have made local bug fixes though.

> Cheers,
> Stefan
> 
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