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From: Kumar Gala <galak@kernel.crashing.org>
Subject: Re: 8360E - PCI / DTC Blob Setup
Date: Thu, 1 Feb 2007 08:33:00 -0600
To: rmcguire@videopresence.com
Cc: linuxppc-embedded@ozlabs.org
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On Feb 1, 2007, at 8:27 AM, Russell McGuire wrote:

> Since I am hip deep in debugging the PCI system.
>
> In the .dts files there is the section for the PCI setup.
>
> The interrupt-map = < >
>
> Does this need to include:
> 1) A mapping for every IDSEL line in the system?
> 2) Only those IDSELs that are used on the slots on the motherboard?

I'm not sure I follow the difference between 1/2. The map needs to  
cover every IDSEL that has an IRQ line wired to it.

> 3) A custom entry for every card we want to support?

See above.

> 4) How does a bridge chip and slave busses affect the entries, if  
> at all?

Uugh, I'm not sure how bridges are handled at this point.

> Looking at the mpc8360 / 8349 setups that are part of the latest  
> kernel
> trees, some are place many and some are placing just a single entry?
>
> Which should be the preferred method?

It depends on your HW setup, the 8360/49 boards have some 'odd' IDSEL  
irq mapping.

- k