Re: [PATCH 2/4] USB OTG: Add driver for NXP's ISP1504 transceiver

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On Tue, Aug 18, 2009 at 01:46:52PM +0400, Sergei Shtylyov wrote:
> Daniel Mack wrote:
>
>> I don't have the full ULPI specification unfortunately,
>
>   So I thought. Here it is:
>
> http://www.smsc.com/media/Downloads_Public/usb/ulpi_v1_1.zip

Thanks.

>> so I can't
>> really tell. But as far as I understand, especially these registers are
>> outside the ULPI standard and hence they are device specific.
>>   
>
>   No, they are not -- see the spec...

Ok, agreed, I wasn't aware of that. I'll rename the whole thing to ULPI
generic as you suggested earlier.

>> That made it work for many boards. What would your proposal be? Add a
>> parameter to the API to decide that?
>>   
>
>  No, probably that should be initialized in the init() method or in  
> board specific code.

If that is done from board specific code, there needs to be a function
in the API to actually do the register access. That's what I mean. So it
looks like we need some more functions to have more fine-grained control
of what the transceiver does.

Daniel

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