Firmware Support for USB Hub

[Laurent Pinchart]

On Wednesday 21 November 2007 18:20, Scott Wood wrote:
> Misbah khan wrote:
> > Hi all,
> >
> > I am using a 8248 processor which has a USB controller and i need to
> > connect a USB Hub to it, iam using Montavista Linux .I need to know that
> > what are the support i need form Montavista or Open source to have an
> > interface with Usb hub. ???
> >
> > Is there any driver that we need to make if so what type ???
>
> I don't believe a driver currently exists for CPM USB.

There's an experimental out-of-tree driver available at 
http://cpm2usb.sourceforge.net/

The code is outdated and doesn't work, but that's a starting point.

If I remember correctly, CPM2 USB host support requires the host to create SOF 
packets in software. High system loads will probably mess the bus up. A 
colleague of mines was told by Freescale to use an external USB controller 
instead of the MPC8248 bundled one.

-- 
Laurent Pinchart
CSE Semaphore Belgium

Chaussée de Bruxelles, 732A
B-1410 Waterloo
Belgium

T +32 (2) 387 42 59
F +32 (2) 387 42 75
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