[U-Boot] USB CDC branch

[Vitaly Kuzmichev <vkuzmichev@mvista.com>]

Hi,

> We also implemented the CDC and RNDIS on our board and working well.
> If you merge your usb gadget tree then we will send the patches also.
Have you shared this anywhere (public git?)?
I would like to look at your patches to sync them with mine.

___
WBR,
Vitaly.

On 07/14/2010 11:10 AM, Kyungmin Park wrote:
> On Wed, Jul 14, 2010 at 4:48 AM, Remy Bohmer <linux@bohmer.net> wrote:
>> Hi,
>>
>> 2010/7/13 Vitaly Kuzmichev <vkuzmichev@mvista.com>:
>>> FYI I'm doing some work on this branch too.
>>
>> Great!
>>
>>> Actually I have ported it to 2010.03
>>
>> What do you mean with ported to 2010.03?
>> It was already working on latest git, do you mean you backported it to
>> an older version? (I would not expect this would be a big difference
>> though)
>>
>>> added RNDIS support
>>
>> Is RNDIS working stable? We had quite some troubles with it,
>> especially with BSODs on those Windows boxes...
>> The device unplug/plug behaviour was a pain for RNDIS, hence the
>> reason why we removed that from the code.
>> But, I do not want to scare you off from this rndis work, please
>> continue. Maybe you can get it to work properly :-)
>>
>> We use it to communicate with a CDC driver on a Windows XP-embedded
>> host (http://www.thesycon.de/eng/usb_cdcecm.shtml). CDC works much
>> more stable, and much more faster compared to rndis.
> 
> We also implemented the CDC and RNDIS on our board and working well.
> If you merge your usb gadget tree then we will send the patches also.
> 
> To Minkyu,
> Can you prepare the patches and send to u-boot?
> 
> Thank you,
> Kyungmin Park
> 
>>
>>>  and made integration into 'usb' command.
>>
>> Great!
>>
>>> However these changes aren't tested yet so the work is still under progress.
>>>
>>> Probably someone knows about any possible issues with CDC/RNDIS support?
>>
>> See above.
>> and CDC is working stable, no known issues with it.
>>
>> At least one hint: First get CDC working on your hardware before you
>> start to connect rndis, that would allow you to get the udc driver and
>> all other levels of SW working properly and that you would only need
>> to focus on rndis protocol rarities after that. And to prevent that
>> you are debugging all kinds of undocumented rndis calls from the
>> Windows host you could use a Linux host instead with the
>> Linux-rndis-usb-host driver  ;-)
>>
>>> And also I would like to know the answers to Stefano's questions.
>>
>> See my other reply.
>>
>> I would suggest to merge all work in progress in the u-boot-usb/CDC
>> branch from which we push it to mainline.
>>
>>
>> Kind regards,
>>
>> Remy
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