> * What I understand from reading i2c-demux-pinctrl.c, a slave device > will only ever be observable from one master at a time, when you > switch over, all children get removed on one master and added to > the other one, to be probed again by their respective drivers. Yes. The very first versions of the demuxer tried to do it in a hot-swapping like fashion but then I switched over because of... > it definitely opens up questions in what happens to e.g. the sysfs > representation, lock order, and power management that I'd rather > not have to think about. ... this! There are dragons, I can tell you :) > * The other thing we definitely have to support for i3c is to deal with > handing over control of the bus between the i3c master owned > by Linux, and other masters that are /not/ owned by the same > Linux instance. This is the part that the spec discusses in much > detail, with the intention of temporarily giving up control of the > bus to let another master do its thing on a shared slave without > user interaction. I can't comment about this one.
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