Is your base address and offset address set correctly on software?
Also please refer to sessions 9.4 & 9.2.4. from below link
Check knowledge-base solutions from below link
Base address and offset address is correct, because i am able to access(read) PHY Registers.
this sessions 9.4 & 9.2.4. is related to Ethernet MDIO but in my design i am using MDIO Slave. This is the different IP and he is acting as a slave to CPU.
on processor side we have only MDIO MDC lines. so we cannot use Ethernet MDIO .
Apologies, We can't provide any information or help in debugging the third party IP.
For further support on third-party IP's,We recommend you to contact the IP vendor.