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List:       linux-arm-kernel
Subject:    RE: the problem of accessing pci config space behind pci bridge31154
From:       "Moseley, Drew" <drew.moseley () intel ! com>
Date:       2005-06-30 17:15:38
Message-ID: C863B68032DED14E8EBA9F71EB8FE4C207B90342 () azsmsx406
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>
>Here is another question about IQ31244 CRB and i31154 PCI bridge.
>I have read the schematics of IQ31244, it shown that the P_IDSEL pin
>of PCI bridge BW31154 is connected to PAD17 (on page 4 of file
>iq31244_revE.pdf).
>But I also found belown descriptions for IDSEL Lines in file "Intel(r)
>31154 133 MHz PCI Bridge Design Guide" (section 5.3, page 30):
>When the 31154 is used in an embedded application, PCI AD16 is used
>for source bridges. This line (AD16) must be connected to the P_IDSEL
>line through a 2 K? resistor.
>
...
>
>I'm not sure whether our problem is related to IDSEL lines. What do
>you think about it?
>

Sounds like you need to contact your FAE who sold you guys the parts and
work through them.  I cannot comment on design guidelines for hardware.
It may be related but if you work it through the FAE they can presumably
help you with that.

Drew

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