Question on how to best access a chip on init that needs VAUX1 power?

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On the OMAP board I have, I want to access production information
(model, serial number, MAC addresses, etc), and the part requires 3v
which is powered off of VAUX1.

I need to pull this out at initialization time, but I have to wait until
the twl4030 driver is running or I get "twl4030: client 3 is not
initialized" when I try to turn on the power.   Looking at the
twl4030-core.c code, I see its invoked via initcall_subsys().  I'd like
to have my code invoked before the other devices come up (so I can
provide a MAC address to the ethernet, etc).  I'm trying
initcall_sysbys_sync() to have my code called after the twl4040
initializes, but before the devices come up.

Is the the right way to approach this?

-- 
Peter Barada <peterb@xxxxxxxxxxx>
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