Here is sample output from the tool:
LPIT: Length=148, Revision=1, Checksum=32,
OEMID=INTEL, OEM Table ID=SKL, OEM Revision=0x0,
Creator ID=MSFT, Creator Revision=0x5f
Type=ACPI_LPIT_TYPE_NATIVE_CSTATE
Length=56
UniqueId=0x
Flags=
EntryTrigger=0x00
Author: bwidawsk
Date: Wed Jul 11 01:37:01 2018
New Revision: 336185
URL: https://svnweb.freebsd.org/changeset/base/336185
Log:
acpidump(8): Add ACPI LPIT (Low Power Idle Table)
The LPIT is the part of the "standardized" way that one can enumerate
various power state information on Intel
