Re: [PATCH v2 24/24] ARM: dts: zte: Add ZTE ZXHN H3600 board

[Andrew Lunn]

> +&gmac_port4 {
> +	label = "wan";
> +	phy-handle = <&phy8>;
> +	phy-mode = "gmii";
> +	nvmem-cells = <&macaddr_tag_1e 1>;
> +	nvmem-cell-names = "mac-address";
> +	status = "okay";
> +};
> +
> +&mdio {
> +	/* the ZX5201 WAN PHY */
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&ext_phy_pins>;
> +	status = "okay";
> +
> +	/* external Sanechips ZX5201; its SerDes answers on address 9 */
> +	phy8: ethernet-phy@8 {
> +		reg = <8>;
> +	};

You have phy-mode == gmii. Such a PHY does not need a SERDES. We need
a better understanding of what is actually used here.

	Andrew