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    SubjectRe: [RFC PATCH 0/3] UART slave device bus
    > > I think there are two other valuable features provided by serio:
    > >
    > > - an existing set of drivers written to the API
    > > - the implementation of the tty_ldisc
    >
    > True, though I'd expect little of the data flow part of it to be reused.

    Then your design is broken.

    > - a child of the uart node
    > - a reg property containing the line number if the parent has multiple
    > uarts (I'd expect this to rarely be used).

    That surprises me as for current x86 platforms it would be the norm,
    except that we use ACPI.

    > - baudrate and other line configuration (though I would expect the
    > slave driver to know all this and set it w/o DT. Also, we already have
    > a way to set baudrate in the parent node at least.)
    > - other standard device properties for interrupt, gpios, regulators.
    >
    > Also to consider is whether muxing of multiple slaves is needed. It's
    > not anything I've seen come up, but it's not hard to imagine. I think
    > that can be considered later and shouldn't impact the initial binding
    > or infrastructure.

    You can describe the child of the serial device as a mux and the children
    of the mux as whatever so it comes out fine when you get to that point.

    Alan

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