Messages in this thread | | | Date | Tue, 13 Feb 2007 10:47:28 -0500 | Subject | Re: [PATCH] Add PCI device ID for IT8152 RISC-to-PCI chip | From | (Lennart Sorensen) |
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On Tue, Feb 13, 2007 at 03:30:29PM +0000, Russell King wrote: > On Tue, Feb 13, 2007 at 10:16:33AM -0500, Lennart Sorensen wrote: > > There doesn't seem to be very many > > arm systems with PCI, so it's hard to tell. > > NetWinder, EBSA285 (which the NetWinder is a derivative of), the N2100, > etc are PCI based and are all well proven in the field.
Which PCI controller do they use?
> However, I have come across issues with what I suspect are buggy > bridges - some southbridges require out of band cache control > signalling and don't behave properly if you don't provide this (despite > having modes to disable such signalling) and some PCMCIA bridges which > don't like delayed read responses from host bridges.
Well certainly on the cpu board we were trying out, it didn't work, whether it was a buggy PCI bridge, or a bad design I am not sure. I suspect the chip.
> That said, I've an EBSA285 with Promise UDMA, 3com NIC, S3 VGA and a > plug-in southbridge card which has been running since about 1999 or so > and the only real data corruption problem I've heard of was when a track > on my Promise UDMA card was eaten by the sticky label resulting in silent > corruption of writes to the disks.
Ouch.
> (I did consider replacing the Promise UDMA card, but the IT821x card > I bought to replace it didn't have all the pins on the chip soldered > down - to the extent that even a PC couldn't recognise the PCI card. > So I'm running on the assumption that the self-repaired Promise UDMA > card is all round going to be more reliable than the as yet unproven > IT821x card.)
And they shipped a card in that state?
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