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Date: Tue, 31 Oct 2006 16:08:28 -0700
From: "Grant Likely" <grant.likely@secretlab.ca>
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To: "Benjamin Herrenschmidt" <benh@kernel.crashing.org>
Subject: Re: [PATCH 1/2] Add MPC52xx Interrupt controller support for
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On 10/31/06, Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>
> > This definitely needs to be removed.  It's used to figure out which
> > driver should drive a PSC (based on function).  We've got a device
> > tree to provide this information now.
>
> Which means we should define how that is presented in the devie-tree and
> Nicolas should then update his tree accordingly...

How about this:

<function> := one of [serial, spi, i2s, ac97]

<function>@<psc_offset> {
        port-number = <logical port number>;   // so /dev/ttyPSC#
connects to something sane
        compatible = "mpc5200b-psb\0mpc52xx-psc";
        ... other stuff ...
};

Function is encoded in the node name, and the compatible property
tells linux that it is an mpc52xx-psc in <function> mode.

g.

-- 
Grant Likely, B.Sc. P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195