Support new MDIO hierarchy in ThunderX DTB
Some firmware revisions provide different DTB tree that include odd MDIO placement in the tree. This commit adds support for 2 new buses: - MRML bridge (PCIB subordinate) - MDIO nexus (MRML subordinate) This allows for the correct MDIO attachment with both - new and old firmware.
Obtained from: Semihalf Sponsored by: Cavium Differential Revision: https://reviews.freebsd.org/D5070
|