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DP83TC813R-Q1: Give 50MHz clock first to read the register

Part Number: DP83TC813R-Q1

Tool/software:

Hi team

My customer IMOTION has a problem for PHY:

The device cannot read phy when working in RMII mode, and mdio cannot detect phy.

It is OK in RGMII mode. I suspect that 50MHz clock needs to be provided to phy immediately after reset in RMII mode, but I am not sure.

Thanks~