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Date:   Tue, 10 Dec 2019 17:51:49 +0100
From:   Andrew Lunn <andrew@lunn.ch>
To:     Landen Chao <landen.chao@mediatek.com>
Cc:     f.fainelli@gmail.com, vivien.didelot@savoirfairelinux.com,
        matthias.bgg@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com,
        devicetree@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        davem@davemloft.net, sean.wang@mediatek.com, opensource@vdorst.com,
        frank-w@public-files.de
Subject: Re: [PATCH net-next 5/6] arm64: dts: mt7622: add mt7531 dsa to
 mt7622-rfb1 board
Message-ID: <20191210165149.GF27714@lunn.ch>
References: <cover.1575914275.git.landen.chao@mediatek.com>
 <7f5a690281664a0fe47cfe7726f26d7f6211d015.1575914275.git.landen.chao@mediatek.com>
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> +				port@6 {
> +					reg = <6>;
> +					label = "cpu";
> +					ethernet = <&gmac0>;
> +					phy-mode = "2500base-x";
> +
> +					fixed-link {
> +						speed = <2500>;
> +						full-duplex;
> +						pause;
> +					};

This fixed-link should not be needed. The DSA driver is supposed to
configure the CPU port to its fastest speed by default. 2500 is
the fastest speed a 2500Base-X link can do...

    Andrew