This series from Dominik Haller <d.haller@phytec.de> provides a way for TI K3 platforms to determine their boot device outside of SPL and then adds support for the PHYTEC phyCORE-AM68x/TDA4x SoM. Link: https://lore.kernel.org/r/20260116014116.767555-1-d.haller@phytec.de