KSZ9897RTXI Clock Control Register (vc_zsy1)

I am using the KSZ9897RTXI chip on the freescale i.mx6 (A9) and connecting with miim(mdio) interface.now have a question about the register CLKO_25_125. The mdio(miim) interface cannot access CLKO_25_125, but A9 needs a 125MHz reference clock. The default..