linux-kernel - Re: [PATCH] mfd/da903x: initialize PMIC core early

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Date:	Mon, 15 Jun 2009 16:44:36 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Mike Rapoport <mike@...pulab.co.il>,
	eric miao <eric.y.miao@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mfd/da903x: initialize PMIC core early

On Mon, Jun 15, 2009 at 03:34:11PM +0100, Mark Brown wrote:
> On Mon, Jun 15, 2009 at 05:08:28PM +0300, Mike Rapoport wrote:
> > Samuel Ortiz wrote:
> 
> > > Sure. Care to explain why this needs to be called earlier ?
> 
> > We want to have da903x regulators available early during boot, and since they
> > are subdevices of mfd/da903x they cannot be enabled until the da903x core is
> > initialized.
> > I just saw Liam Girdwood pull request with "regulator: Move regulator drivers to
> > subsys_initcall()" commit and jumped in :)
> 
> Any MFD core with regulators on it ought to be pulled forward to
> subsys_initcall().  Doing this makes it easier to get a sensible
> ordering during boot without having a song and dance in consumer
> drivers waiting for the regulators that supply them to instantiate.
Yep, I'm preparing a patch for that.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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