From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Darren Zhang" <darrentw-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: driver support for smbus mux
Date: Tue, 29 Apr 2008 16:00:29 -0700
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In my system the I2C bus is multiplexed into 4 segments using an analog
multiplexer.
When I use i2cdetect, only devices before the i2c mux can be detected.
I wonder if this kind of hardware configuration is supported in the latest
2.6 kernal
s.t. I can use i2ctools (i2cdetect/i2cdump/i2cset) to access devices behind
the i2c mux?
Any suggestion appreciated.

                         -------------- <-------->
                        | i2c mux | <-------->
   i2c-0 <------->  |             | <-------->
                        |             | <-------->
                         -------------

Thanks

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<div>In my system the I2C bus is multiplexed into 4 segments using an analog multiplexer.</div>
<div>When I use i2cdetect, only devices&nbsp;before the i2c mux can be detected.</div>
<div>I wonder if&nbsp;this kind of hardware&nbsp;configuration is supported in the latest 2.6 kernal&nbsp;</div>
<div>s.t. I can&nbsp;use i2ctools (i2cdetect/i2cdump/i2cset) to access devices behind the&nbsp;i2c mux?</div>
<div>Any suggestion appreciated.</div>
<div><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -------------- &lt;--------&gt;&nbsp; </div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | i2c mux | &lt;--------&gt;&nbsp;<br>&nbsp;&nbsp; i2c-0 &lt;-------&gt;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | &lt;--------&gt;&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | &lt;--------&gt;&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -------------<br>
<br>Thanks&nbsp;</div>

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