> You are correct Guenter. We need to address both i2c- and gpio-based > multiplexers. You and Jean suggested the following solution: > > I2C Mux: i2c-N-mux-i2c-XX (chan_id M) > GPIO Mux: i2c-N-mux-gpio-XX (chan_id M) > > Where XX is the i2c address or the first GPIO pin number. This > ensures unique IDs for both technologies. I rediscovered this series: http://www.spinics.net/lists/linux-i2c/msg11542.html ("i2c-mux: expose i2c bus topology under sysfs") From a glimpse, I like this approach better. I wonder if we can maintain backward compatibility somehow. I need to play with it. But not today, this has to wait till tomorrow.
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