SPRZ457I January 2021 – December 2024 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
Boot: Ethernet PHY Scan and Bring-Up Flow doesn't work with PHYs that don't support Auto Negotiation
ROM Ethernet (either RGMII or RMII) boot mode relies on PHY auto-negotiation to complete before checking for link status. Hence PHY that do not support auto-negotiation cannot work with this boot mode.
None, a PHY supporting auto-negotiation is required.