Re: Problem with PCIe -> PCI bridge on MPC8377E-RDB
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2009-08-12 09:56:21
On Tue, 2009-08-11 at 23:25 -0400, 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.
I've had problems on embedded 4xx with some of those guys. I think there's a problem with the TI bridge, either it needs more time to settle after reset or it doesn't cope with a second reset by the kernel after the FW reset ,I don't remember... but there's definitely something fishy with that bridge or something a bit too "tight" on spec we do on both FSL and 44x that doesn't please that bridge. Cheers, Ben.
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? Thanks! B.J. Buchalter _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev