Documentation/arm64/acpi_object_usage.rst

20        -  Optional: BGRT, CPEP, CSRT, DBG2, DRTM, ECDT, FACS, FPDT, IORT,
47        Optional, not currently supported, with no real use-case for an
54        Optional, not currently supported, and not recommended until such
62        Optional, not currently supported.
68        License has changed and should be usable.  Optional if used instead
97        Optional, not currently supported.
103        Optional, not currently supported, but could be used on ARM if and
166        Optional, not currently supported.
242        Optional, not currently supported.
248        Optional, not currently supported.
254        Optional, not currently supported.
266        Optional, not currently supported.
288        Optional, not currently supported.
300        Optional, not currently supported.
319        Optional, not currently supported.
331        Optional in general, but required for NUMA systems.
343        Optional, not currently supported.
349        Optional, but if used, only the GICC Affinity structures are read.
371        Optional, but only necessary in virtualized environments in order to
378        Optional, not currently supported, and may need changes to fully
385        Optional, not currently supported, and may need changes to fully
392        Optional, not currently supported.  No known use case for arm64,
423        Optional, used only by Xen at present.