[U-Boot] USB CDC branch

[Vitaly Kuzmichev <vkuzmichev@mvista.com>]

Hi Remi,

> 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 mean that I have to work over our fork of main u-boot 2010.03.
Of course before submitting the patches I will test them on both
'master' branches of main u-boot and u-boot-usb.

> Is RNDIS working stable?

I didn't make tests yet.

> We had quite some troubles with it,
> especially with BSODs on those Windows boxes...

Looks like I have to fix this :)

> The device unplug/plug behaviour was a pain for RNDIS,

Do you mean that Windows and u-boot do not recognize cable unplug?


> But, I do not want to scare you off from this rndis work

I have no choice :)

> We use it to communicate with a CDC driver on a Windows XP-embedded
> host (http://www.thesycon.de/eng/usb_cdcecm.shtml).

Fine.

And thanks for hint.

___
WBR,
Vitaly.

On 07/13/2010 11:48 PM, Remy Bohmer 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.
> 
>>  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