linux-kernel - Re: [PATCH] i2c: Add generic support passing secondary devices addresses

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Message-ID: <20140920164858.GA2260@katana>
Date:	Sat, 20 Sep 2014 18:49:07 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	mark.rutland@....com, lars@...afoo.de
Subject: Re: [PATCH] i2c: Add generic support passing secondary devices
 addresses

On Fri, Sep 05, 2014 at 04:02:19PM +0200, Jean-Michel Hautbois wrote:
> Some I2C devices have multiple addresses assigned, for example each address
> corresponding to a different internal register map page of the device.
> So far drivers which need support for this have handled this with a driver
> specific and non-generic implementation, e.g. passing the additional address
> via platform data.

This raises the first question for me: Are the additional addresses
configurable? Sadly, I can't find good documentation for the adv7604.
Otherwise, if I know I have a adv7604 and know its addresses, this
information should go into the driver and not the DT.


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