Re: Firmware Support for USB Hub

[Misbah khan <misbah_khan@engineer.com>]

Laurent Pinchart-4 wrote:
>=20
> 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.
>=20
> There's an experimental out-of-tree driver available at=20
> http://cpm2usb.sourceforge.net/
>=20
> The code is outdated and doesn't work, but that's a starting point.
>=20
> can you suggest me the problems both in terms of H/W S/W and Montavista
> ????
>=20
> If I remember correctly, CPM2 USB host support requires the host to creat=
e
> SOF=20
> packets in software. High system loads will probably mess the bus up. A=
=20
> colleague of mines was told by Freescale to use an external USB controlle=
r=20
> instead of the MPC8248 bundled one.
>=20
> I have posted this quarry to freescale. Anyway if you get more informatio=
n
> could you please share with me ??
>=20
>=20
> ---Misbah <><
> --=20
> Laurent Pinchart
> CSE Semaphore Belgium
>=20
> Chauss=C3=A9e de Bruxelles, 732A
> B-1410 Waterloo
> Belgium
>=20
> T +32 (2) 387 42 59
> F +32 (2) 387 42 75
>=20
> =20
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>=20

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