1 What: /sys/bus/i2c/.../idle_state 1 What: /sys/bus/i2c/.../idle_state
2 Date: January 2019 2 Date: January 2019
3 KernelVersion: 5.2 3 KernelVersion: 5.2
4 Contact: Robert Shearman <robert.shearma 4 Contact: Robert Shearman <robert.shearman@att.com>
5 Description: 5 Description:
6 Value that exists only for mux 6 Value that exists only for mux devices that can be
7 written to control the behavio 7 written to control the behaviour of the multiplexer on
8 idle. Possible values: 8 idle. Possible values:
9 !! 9 -2 - disconnect on idle, i.e. deselect the last used
10 =========== ================= !! 10 channel, which is useful when there is a device
11 -2 disconnect on idl !! 11 with an address that conflicts with another
12 channel, which is !! 12 device on another mux on the same parent bus.
13 with an address t !! 13 -1 - leave the mux as-is, which is the most optimal
14 device on another !! 14 setting in terms of I2C operations and is the
15 -1 leave the mux as- !! 15 default mode.
16 setting in terms !! 16 0..<nchans> - set the mux to a predetermined channel,
17 default mode. !! 17 which is useful if there is one channel that is
18 0..<nchans> set the mux to a !! 18 used almost always, and you want to reduce the
19 which is useful i !! 19 latency for normal operations after rare
20 used almost alway !! 20 transactions on other channels
21 latency for norma <<
22 transactions on o <<
23 =========== ================= <<
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