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- What: /sys/bus/i2c/.../idle_state
- Date: January 2019
- KernelVersion: 5.2
- Contact: Robert Shearman <[email protected]>
- Description:
- Value that exists only for mux devices that can be
- written to control the behaviour of the multiplexer on
- idle. Possible values:
- =========== ===============================================
- -2 disconnect on idle, i.e. deselect the last used
- channel, which is useful when there is a device
- with an address that conflicts with another
- device on another mux on the same parent bus.
- -1 leave the mux as-is, which is the most optimal
- setting in terms of I2C operations and is the
- default mode.
- 0..<nchans> set the mux to a predetermined channel,
- which is useful if there is one channel that is
- used almost always, and you want to reduce the
- latency for normal operations after rare
- transactions on other channels
- =========== ===============================================
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