Problem with PCIe -> PCI bridge on MPC8377E-RDB

B.J. Buchalter bj at
Wed Aug 12 16:14:56 EST 2009

On Aug 12, 2009, at 1:20 AM, Kumar Gala wrote:

> On Aug 11, 2009, at 10:25 PM, B.J. Buchalter wrote:
>> I don't know the model of the board off the top of my head.
>> I do know that it uses the Texas Instruments XIO2000A/XIO2200 PCI  
>> Express-to-PCI Bridge (rev 03), with the TSB82AA2 OHCI Link behind  
>> the bridge.
>> The same board definitely works as expected in a Mac Pro.
>> In doing some Google searches about this, I have seen the TI part  
>> listed in the PCI configuration of folks running linux (though  
>> probably on Intel) and apparently having no problems with the  
>> busses behind the bridge being enumerated.
>> I am guessing that the problem is related the the PCIe root complex  
>> on the 8377, but I am just guessing.
>> Is PCIe known to work on the MPC837x?
> It is suppose to.  I would recommend updating u-boot to something  
> newer and see what you get on that side.

Ok -- I can try that; I have been using the u-boot that shipped with  
the board to avoid having to worry about wiping out the boot-load  

> Also I'll try see if we have a PCIe board w/a p2p bridge on it.  I'm  
> guessing no one has tried PCIe on 83xx w/a p2p bridge on it.

I see. A lot of the FireWire parts are based upon p2p bridges...


B.J. Buchalter

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