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

[Lars-Peter Clausen]

On 09/20/2014 06:49 PM, Wolfram Sang wrote:
> 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.

They are. The current driver hard codes the other addresses, but that's not 
working when you have multiple adv7604s on the same I2C bus.

- Lars
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