[U-Boot] MPC875 USB support?

[U-Boot] MPC875 USB support?

[Mikhail Zaturenskiy]

Hi everyone,
I was wondering, is it possible to have U-Boot access a USB flash
drive (or use any other USB device ...) on a board using an MPC875?
If it is, could somebody point me in the right direction as to how to do this?

Thanks,
Mikhail Zaturenskiy

[U-Boot] MPC875 USB support?

[Wolfgang Denk]

Dear Mikhail Zaturenskiy,

In message <97dd5fd20909241153w50823a1ch2725c66c16febf45@mail.gmail.com> you wrote:
>
> I was wondering, is it possible to have U-Boot access a USB flash
> drive (or use any other USB device ...) on a board using an MPC875?
> If it is, could somebody point me in the right direction as to how to do this?

Assuming you put a working USB controller on your board, that should
be possible.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
The perversity of nature is nowhere better demonstrated by  the  fact
that,  when  exposed to the same atmosphere, bread becomes hard while
crackers become soft.

[U-Boot] MPC875 USB support?

[Mikhail Zaturenskiy]

>> I was wondering, is it possible to have U-Boot access a USB flash
>> drive (or use any other USB device ...) on a board using an MPC875?
>> If it is, could somebody point me in the right direction as to how to do this?
>
> Assuming you put a working USB controller on your board, that should
> be possible.

I guess my question should have been: Would it be possible using the
controller that's built into the MPC875?

[U-Boot] MPC875 USB support?

[Wolfgang Denk]

Dear Mikhail Zaturenskiy,

In message <97dd5fd20909241241j789dce22u7a1948d805d6f228@mail.gmail.com> you wrote:
>
> I guess my question should have been: Would it be possible using the
> controller that's built into the MPC875?

Is there a USB host controller driver in Linux which is working
reliably?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Build a system that even a fool can use and only a fool will want  to
use it.

[U-Boot] MPC875 USB support?

[Mikhail Zaturenskiy]

>> I guess my question should have been: Would it be possible using the
>> controller that's built into the MPC875?
>
> Is there a USB host controller driver in Linux which is working
> reliably?

The short answer is: not that I know of, but I sure hope there is.
Right now I'm still looking for a driver that would work with an
MPC8xx's built-in USB HCI. So far the only mention I've seen of such a
thing was from some posts that go a few years back saying that there
was no driver for a 2.6.x kernel and the one for 2.4.x was not too
good either, and that was for pre-MPC875 CPUs.

I thought somebody would have written something, but I'm starting to
wonder if I'll have to put something together myself. I can't seem to
find much good info on how to get this working in either U-Boot or
Linux.

Ultimately, I need USB to work in Linux and not so much in U-Boot, but
for now I need whichever one I can get to work faster.

Mikhail Zaturenskiy

[U-Boot] MPC875 USB support?

[Anton Vorontsov]

On Thu, Sep 24, 2009 at 04:25:21PM -0500, Mikhail Zaturenskiy wrote:
> >> I guess my question should have been: Would it be possible using the
> >> controller that's built into the MPC875?
> >
> > Is there a USB host controller driver in Linux which is working
> > reliably?
> 
> The short answer is: not that I know of, but I sure hope there is.
> Right now I'm still looking for a driver that would work with an
> MPC8xx's built-in USB HCI. So far the only mention I've seen of such a
> thing was from some posts that go a few years back saying that there
> was no driver for a 2.6.x kernel and the one for 2.4.x was not too
> good either, and that was for pre-MPC875 CPUs.
> 
> I thought somebody would have written something, but I'm starting to
> wonder if I'll have to put something together myself. I can't seem to
> find much good info on how to get this working in either U-Boot or
> Linux.
> 
> Ultimately, I need USB to work in Linux and not so much in U-Boot, but
> for now I need whichever one I can get to work faster.

I don't know how much CPM1 differs from CPM2, but there was
somewhat successfull attempt to add CPM2 USB support to FHCI
driver (so far it supports only QE/"CPM3" USB), made by Laurent
Pinchart. I don't quite remember if he posted the patch to some
mailinglist, but I have the patch in my mailbox.

I can post it somewhere if Laurent don't mind. Cc'ing...

-- 
Anton Vorontsov
email: cbouatmailru at gmail.com
irc://irc.freenode.net/bd2