https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245654
--- Comment #8 from Vladimir Kondratyev <w...@freebsd.org> ---
(In reply to xspbe3ho3p5uac from comment #7)
> this machine doesn't actually seem to have any devices attached on the I2C 
> bus.

This machine have at least 3 I2C devices defined in DSDT table. You can find
them with searching of "devinfo -rv" output for 'handle=\_SB_.I2C' string. I
doubt that they can be used for something good, but it would be nice to read at
least 1 byte from any of them. BayTrail is known for sharing I2C lines with
power management unit so I would like to know if I2C works at all without
dedicated support for this unit.

Could you post output of "sudo acpidump -dt" command here too. It looks like
one of I2C devices were not recognized properly by ACPI subsystem.

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