Set fixed-link mode in Ethernet

@WayneWWW,Hello,The question I asked last time:https://forums.developer.nvidia.com/t/hope-to-get-technical-guidance-use-the-ksz9896-phy-to-replace-the-jetson-agx-xavier-phy-driver-via-the-mdio-interface/239243

when I communicated with the supplier, I encountered some new problems, this link:
https://github.com/Microchip-Ethernet/EVB-KSZ9477/issues/89

Seems to be a question about eqos_xx_clk errors.thank you.

Hi,

It looks like you filed this twice. I will delete one topic and use the rest one to track.