[PATCH v3 3/4] net: stmmac: register parent MDIO node for sun8i-h3-emac

quoted

Just tested. Yes the MDIO/MDC lines are also muxed and controlled through
the same mux bit.

Alright then the mdio-mux seems appropriate, thanks.

Please add a comment that it muxes the MII lines as well.  That is not
normal for an mdio-mux, so we should document it in the dtsi file.

Thanks
       Andrew