Re: [PATCH net-next v13 10/11] net: mdio: realtek-rtl9300: Add support for RTL839x

> As per the SDK the PHYs on a RTl83xx bus are mainly C22 driven. The
> polling unit works in C22 mode and the devicetree usually does not
> make use of the ethernet-phy-ieee802.3-c45 flag. Nevertheless there are
> some PHY MMD registers (e.g. EEE) that might be of interest for the
> future development of the hardware. Until that is really needed keep
> the C45 read/write helpers out of the driver.

Actually, since C45 over C22 is FUBAR, you probably do want C45 bus
transactions so you can access the EEE registers.

    Andrew