linux-kernel - Re: [PATCH, RFC] Earlier I2C initialization

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Message-ID: <Pine.LNX.4.55.0806112226060.14077@cliff.in.clinika.pl>
Date:	Wed, 11 Jun 2008 22:31:27 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Jean Delvare <khali@...ux-fr.org>
cc:	David Brownell <david-b@...bell.net>,
	Ryan Mallon <ryan@...ewatersys.com>,
	Uli Luckas <u.luckas@...d.de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	i2c@...sensors.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH, RFC] Earlier I2C initialization

On Wed, 11 Jun 2008, Jean Delvare wrote:

> That being said, I'm not sure if the comparison with the PCI subsystem
> holds... I am under the impression that PCI bus handling doesn't
> require dedicated drivers? At least I can't see any under drivers/pci.

 Of course it does require them.  It is just due to their very nature they
tend to be placed under arch/, although there are some cases where the
same system controller can be used for a range of processors (e.g. some
Marvell chips can be used either with MIPS or PowerPC CPUs) and they might
be arguably put in a place more suitable for sharing between
architectures.  See arch/mips/pci/ for an example of a generous bunch of
PCI host drivers.

  Maciej
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