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AM335X EMAC MDIO status reading

Hi,

The register MDIOUSERACCESS0 can be used to perform an MDIO access (read or write). During the auto negotiation, we read status register to determine the negotiation result. In this operation, the ‘PHYADR’ is 0, ‘REGADR’ is 1, the return status value is 0x7809.

However, in the Technical Reference Manual, the explanation of the returned status isn’t supplied. Do you know where can we find some document which can explain these status.

Thanks,