From: Peter Barada <peterb@logicpd.com>
To: linux-omap <linux-omap@vger.kernel.org>
Subject: Question on how to best access a chip on init that needs VAUX1 power?
Date: Fri, 16 Jan 2009 14:31:27 -0500 [thread overview]
Message-ID: <1232134287.347.44.camel@blackhole> (raw)
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@logicpd.com>
next reply other threads:[~2009-01-16 19:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-16 19:31 Peter Barada [this message]
2009-01-16 20:17 ` Question on how to best access a chip on init that needs VAUX1 power? Woodruff, Richard
2009-01-16 21:05 ` Peter Barada
2009-01-16 21:10 ` Woodruff, Richard
2009-01-16 21:11 ` David Brownell
2009-01-16 21:10 ` David Brownell
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