linux-kernel - Re: [PATCH v3 0/2] i2c/of: Populate multiplexed i2c busses from the device tree.

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Date:	Fri, 13 Apr 2012 13:09:20 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	David Daney <ddaney.cavm@...il.com>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	devicetree-discuss@...ts.ozlabs.org,
	"Jean Delvare (PC drivers core)" <khali@...ux-fr.org>,
	"Ben Dooks (embedded platforms)" <ben-linux@...ff.org>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Peter Korsgaard <peter.korsgaard@...co.com>,
	Guenter Roeck <guenter.roeck@...csson.com>,
	linux-i2c@...r.kernel.org, Rob Herring <rob.herring@...xeda.com>,
	linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: Re: [PATCH v3 0/2] i2c/of: Populate multiplexed i2c busses from the
 device tree.

On 04/12/2012 11:14 PM, David Daney wrote:
> From: David Daney <david.daney@...ium.com>
> 
> v3: Integrate changes from Lars-Peter Clausen to make better use of
>     the of_*() infrastructure.  Get rid of ugly #ifdefs.
> 
> v2: Update bindings to use "reg" insutead of "cell-index"
> 
> v1: Unchanged from the original RFC where I said:
> 
>   We need to populate our I2C devices from the device tree, but some
>   of our systems have multiplexers which currently break this process.
> 
>   The basic idea is to have the generic i2c-mux framework propagate
>   the device_node for the child bus into the corresponding
>   i2c_adapter, and then call of_i2c_register_devices().  This means
>   that the device tree bindings for *all* i2c muxes must have some
>   common properties.  I try to document these in mux.txt.
> 
> This is now tested against 3.4-rc2 and is still working well.
> 

I've been using these patches with a pca9548 and a pca9546 for a while now.
Both:

Tested-by: Lars-Peter Clausen <lars@...afoo.de>

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