> > > > +What: /sys/bus/i2c/.../idle_state > > > > +Date: January 2019 > > > > +KernelVersion: 5.2 > > > > +Contact: Robert Shearman <robert.shearman@xxxxxxx> > > > > +Description: > > > > + Value 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 pca954x mux on the same parent > > > > > > Nit: It doesn't need to be a PCA954x mux, it could be any mux. > > > > And maybe say that it only exists for mux devices? > > > > Maybe I'm misunderstanding you, but does the filename of > sysfs-bus-i2c-devices-pca954x not already convey that information? Unless I am overlooking something, the "What:" line above has no indication that the idle_state file only exists for muxes. So, it could be assumed it exists for every I2C device. My suggestion was to make that super clear in the "Description" that this is not the case. Does that make sense?
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