From: David Hawkins <dwh@ovro•caltech.edu>
To: Wolfgang Denk <wd@denx•de>
Cc: linuxppc-embedded@ozlabs•org
Subject: Re: Yosemite/440EP 'issues' as a PCI target
Date: Fri, 10 Feb 2006 22:03:10 -0800 [thread overview]
Message-ID: <43ED7E1E.2030700@ovro.caltech.edu> (raw)
In-Reply-To: <20060210173133.964B53525CC@atlas.denx.de>
Hi Wolfgang,
>>Of course there is also the option of finding another
>>PowerPC that matches my requirements;
> ...
> MPC834x comes to mind. But I have to admit that we never tried using
> this as a PCI device yet...
Indeed you were correct. The MPC834x series meets my requirements.
It is also a 3.3V PCI device, so I'm checking into whether
the Trenton CPUs I can use as host CPUs use a 3.3V PCI interface.
If that is the case, then I'll move the Force CPUs into another
system, and I'll just define the cPCI bus in the correlator
system as 3.3V-only.
The potential advantages of the MPC834x over the 440EP are;
- it has doorbell registers and mailboxes for PCI
host-to-host comms (though does not have an I2O interface)
- its DDR-SDRAM controller can run faster than the 440EP
- its external local bus is wider and faster than
the 440EP
- but I think the MPC834x internal buses are slower than
the 440EP CoreConnect buses, so I'll need to benchmark
to compare the two.
- it exists! I can find them on distributors web sites
(can't say the same for the 440EP yet!)
So, I'll continue with my evalation of the 440EP, and then
I'll want to evaluate the MPC834x devices.
What MPC834x development kit are you using? What would you recommend?
- I'd like to get a board in a PCI or cPCI-form factor, since
I could use it as a PCI agent/peripheral
- I'd really like to get access to the external bus
too.
Embedded Planet has a PrPMC module with an 8343E, but I doubt
I can get to the local bus on that board. I found news releases
of an MPC8349E QUICCstart board, but couldn't find anything
on Freescale's web site. Wind River appears to have an eval
board; SBC8347E/49E, which looks to be a cPCI board, but their
web site didn't have much in the way of details (or pictures).
Freescale do have the MPC8349EMDS 'MPC8349E Modular Development
System', but its not clear how much of that system I would
need to purchase just to test the board in a PCI system.
Looks like its aimed toward AdvancedTCA development.
Anyway, thanks for the pointer to the MPC834x series!
Dave
next prev parent reply other threads:[~2006-02-11 6:05 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-02 9:35 Yosemite/440EP why are readl()/ioread32() setup to readlittle-endian? Jenkins, Clive
2006-02-02 9:46 ` Eugene Surovegin
2006-02-02 14:37 ` Matt Porter
2006-02-02 17:45 ` Eugene Surovegin
2006-02-02 18:16 ` Matt Porter
2006-02-05 4:41 ` Yosemite/440EP PLB4 vs PLB3 DMA to PCI issue David Hawkins
2006-02-05 10:39 ` Wolfgang Denk
2006-02-05 23:47 ` David Hawkins
2006-02-06 18:31 ` Stefan Roese
2006-02-06 19:09 ` David Hawkins
2006-02-08 15:38 ` Stefan Roese
2006-02-08 18:43 ` David Hawkins
2006-02-09 0:34 ` Wolfgang Denk
2006-02-09 13:25 ` Mark Chambers
2006-02-09 23:58 ` Yosemite/440EP 'issues' as a PCI target David Hawkins
2006-02-10 7:47 ` Stefan Roese
2006-02-10 17:05 ` David Hawkins
2006-02-10 17:20 ` Andrew Armitage
2006-02-10 17:26 ` David Hawkins
2006-02-10 17:31 ` Wolfgang Denk
2006-02-10 17:38 ` David Hawkins
2006-02-10 17:58 ` David Hawkins
2006-02-11 6:03 ` David Hawkins [this message]
2006-02-11 8:21 ` Stefan Roese
2006-02-11 18:15 ` David Hawkins
2006-02-11 13:03 ` Wolfgang Denk
2006-02-10 17:59 ` Stefan Roese
2006-02-10 18:11 ` David Hawkins
2006-02-11 8:06 ` Stefan Roese
2006-02-11 18:06 ` David Hawkins
2006-02-11 19:00 ` David Hawkins
[not found] ` <43ECCCA2.1070007@sandburst.com>
[not found] ` <43ECCE7A.4090507@ovro.caltech.edu>
[not found] ` <43ECD19E.8010604@sandburst.com>
2006-02-10 19:13 ` David Hawkins
[not found] ` <001701c62e6c$09c48ea0$6401a8c0@CHUCK2>
2006-02-10 18:19 ` David Hawkins
2006-02-11 6:06 ` David Hawkins
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=43ED7E1E.2030700@ovro.caltech.edu \
--to=dwh@ovro$(echo .)caltech.edu \
--cc=linuxppc-embedded@ozlabs$(echo .)org \
--cc=wd@denx$(echo .)de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox