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Re: Embedded NetBSD USB

Of course it is a non-ehci version. I need to be an audio device sitting across 
a cable from a pc that would be the host. Sounds like I am on my own on this 

Thanks for your response

----- Original Message -----
From: Matt Thomas []
Sent: Friday, January 13, 2012 12:36 PM
To: Denis Brockus
Cc: <>
Subject: Re: Embedded NetBSD USB

On Jan 12, 2012, at 9:48 AM, Denis Brockus wrote:

> I have a development board with a Synopsys USB 2.0 OTG core attached to it.

Is that Synopsys EHCI compliant core or the non-EHCI one?  If its the latter, I 
feel your pain.

> I want to use the USB in an embedded manner for audio etc. (mostly in 
> peripheral mode) and not as part of a host computer.  Can someone point me in 
> the right direction to either finding some documentation on doing this or 
> sample drivers... Anything would be helpful.

So you want to "act" as a USB audio device?  Plug your device into a USB host 
and have it attach as a USB audio deivce?  

Or do you want to attach a USB audio device and have it discovered and used?

The NetBSD USB stack is a host-only stack.  Why there are several systems that 
could act in USB device mode, they do their own things when it comes to device 

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