Re: [PATCH net-next] net: dsa: microchip: ksz9477: follow errata sheet when applying fixups

[Andrew Lunn]

>  static void ksz9477_phy_errata_setup(struct ksz_device *dev, int port)
>  {
> +	u16 cr;
> +
> +	/* Errata document says the PHY must be configured to 100Mbps
> +	 * with auto-neg disabled before configuring the PHY MMD
> +	 * registers.
> +	 */
> +	ksz_pread16(dev, port, REG_PORT_PHY_CTRL, &cr);
> +	ksz_pwrite16(dev, port, REG_PORT_PHY_CTRL,
> +		     PORT_SPEED_100MBIT | PORT_FULL_DUPLEX);
> +

For this fix, these are fine.

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

Looking at the values of PORT_SPEED_100MBIT and PORT_FULL_DUPLEX, they
are identical to BMCR_SPEED100 and BMCR_FULLDPLX. In fact, it looks
like for 9477 this is a standard BMCR. Please could you add a follow
up patch which replaces these #defines with the standard ones in
include/uapi/linux/mii.h. The code is then more understandable by
people who know the standard defines.

Thanks
	Andrew