1What: /sys/bus/i2c/.../idle_state 2Date: January 2019 3KernelVersion: 5.2 4Contact: Robert Shearman <robert.shearman@att.com> 5Description: 6 Value that exists only for mux devices that can be 7 written to control the behaviour of the multiplexer on 8 idle. Possible values: 9 -2 - disconnect on idle, i.e. deselect the last used 10 channel, which is useful when there is a device 11 with an address that conflicts with another 12 device on another mux on the same parent bus. 13 -1 - leave the mux as-is, which is the most optimal 14 setting in terms of I2C operations and is the 15 default mode. 16 0..<nchans> - set the mux to a predetermined channel, 17 which is useful if there is one channel that is 18 used almost always, and you want to reduce the 19 latency for normal operations after rare 20 transactions on other channels 21