MPC5200Lite and PCI issues...

MPC5200Lite and PCI issues...

[Gerhard Jaeger]

Hi list,

while playing around with a Lite5200 eval-board, I noticed that
there seems to be some problems with the PCI bus. Some cards
are detected without any problems and also can be accessed
some cards not. Apart for the 5V/3.3V issues, I think there are
some problems with this board.
Are there any experiences? Explanations? Solutions, or workarounds?

Thanks in advance,
  Gerhard


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Re: MPC5200Lite and PCI issues...

[Wolfgang Denk]

In message <200402270935.06816.g.jaeger@sysgo.com> you wrote:
>
> while playing around with a Lite5200 eval-board, I noticed that
> there seems to be some problems with the PCI bus. Some cards
> are detected without any problems and also can be accessed
> some cards not. Apart for the 5V/3.3V issues, I think there are
> some problems with this board.
> Are there any experiences? Explanations? Solutions, or workarounds?

Remember that there is just one PCI interrupt on the LITE5200;  cards
that require another one will not work.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Every time history repeats itself the price goes up.

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Re: MPC5200Lite and PCI issues...

[Gerhard Jaeger]

On Friday 27 February 2004 09:56, Wolfgang Denk wrote:
> In message <200402270935.06816.g.jaeger@sysgo.com> you wrote:
> > while playing around with a Lite5200 eval-board, I noticed that
> > there seems to be some problems with the PCI bus. Some cards
> > are detected without any problems and also can be accessed
> > some cards not. Apart for the 5V/3.3V issues, I think there are
> > some problems with this board.
> > Are there any experiences? Explanations? Solutions, or workarounds?
>
> Remember that there is just one PCI interrupt on the LITE5200;  cards
> that require another one will not work.

Ah I see, thanks for this hint. My major problem seems, that some PCI
cards esp. grafic adapter simply did not appear in the PCI list of i.e.
u-boot. The cards work fine in a EBONY EVA board.
Are there any known problems with PCI timings or is the power supply
the problem?

Regards,
  Gerhard


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Re: MPC5200Lite and PCI issues...

[Wolfgang Denk]

In message <200403010920.12424.g.jaeger@sysgo.com> you wrote:
>
> Ah I see, thanks for this hint. My major problem seems, that some PCI
> cards esp. grafic adapter simply did not appear in the PCI list of i.e.
> u-boot. The cards work fine in a EBONY EVA board.

Are these really 3.3V cards? (sorry, I don't  know  the  ebony  board
that well)

> Are there any known problems with PCI timings or is the power supply
> the problem?

There is a known issue with SDRAM  timings  which  probably  explains
most  of  the  problems  people  experience,  but I don't think it is
related to your PCI troubles.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"More software projects have gone awry for lack of calendar time than
for all other causes combined."
                         - Fred Brooks, Jr., _The Mythical Man Month_

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Re: MPC5200Lite and PCI issues...

[Gerhard Jaeger]

On Monday 01 March 2004 10:12, Wolfgang Denk wrote:
> In message <200403010920.12424.g.jaeger@sysgo.com> you wrote:
> > Ah I see, thanks for this hint. My major problem seems, that some PCI
> > cards esp. grafic adapter simply did not appear in the PCI list of i.e.
> > u-boot. The cards work fine in a EBONY EVA board.
>
> Are these really 3.3V cards? (sorry, I don't  know  the  ebony  board
> that well)

Yes.

> > Are there any known problems with PCI timings or is the power supply
> > the problem?
>
> There is a known issue with SDRAM  timings  which  probably  explains
> most  of  the  problems  people  experience,  but I don't think it is
> related to your PCI troubles.

Probably not, but can you be more specific on that SDRAM problems, any known
workarounds?

Regards,
  Gerhard


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