Re: USB host isochronous transfer broken

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On Tue, Aug 14, 2012 at 08:15:39AM +0200, Ruben Jenster wrote:
> Hi Greg,
> 
> thanks for your answer.
> 
> On Aug 13, 2012, at 4:42 PM, Greg KH wrote:
> 
> > 
> > After reading the code for the USB host driver for this hardware, and
> > reading the hardware data sheet, I'm amazed that any USB devices work on
> > this platform :)
> 
> You really did this? I think it would take me a few days.
> So is the hardware data sheet public available?

Parts of it are.

> If yes - where do I get it?  

Look on the raspberrypi web site, they posted it a while ago.

> > I think you are right in that isoc just doesn't work on the codebase you
> > are trying to use, but I would try asking on the raspberry-pi kernel
> > mailing list to see if there are any updates that you can try out for
> > newer versions of the kernel and drivers,
> 
> I'll do that. Actually I read in a post in the raspberry pi forum that a USB
> guru like you is required. ;) I hope there is some progress here soon.
> What part of the code would you revise first? 
> Can you give me a pointer what's the worst part of the code and
> where to start?

The whole thing is horrible, I wouldn't know where to start :(

Good luck,

greg k-h
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