> This sounds like a specific issue of a generic problem that has come > up recently on this list. That is, i2c bus MUX's and additional > busses. > > This GPIO pin is probably controlling a MUX that chooses between two > different busses. For the sake of information exactitude, Alex analyzed the MPX2's behavior as a *diode* switching, not SMBus switching. This is something different, so it may or may not fit into the discussion about muxing I2C busses (and at first sight, I would think it doesn't). -- Jean "Khali" Delvare http://khali.linux-fr.org/
