netdev - Re: [PATCH net-next v2 7/7] arm64: dts: mt7622: add mt7531 dsa to bananapi-bpi-r64 board

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Date:   Tue, 18 Aug 2020 19:24:33 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Landen Chao <landen.chao@...iatek.com>
Cc:     andrew@...n.ch, f.fainelli@...il.com,
        vivien.didelot@...oirfairelinux.com, matthias.bgg@...il.com,
        robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        davem@...emloft.net, sean.wang@...iatek.com, opensource@...rst.com,
        frank-w@...lic-files.de, dqfext@...il.com
Subject: Re: [PATCH net-next v2 7/7] arm64: dts: mt7622: add mt7531 dsa to
 bananapi-bpi-r64 board

On Tue, Aug 18, 2020 at 03:14:12PM +0800, Landen Chao wrote:
> Add mt7531 dsa to bananapi-bpi-r64 board for 5 giga Ethernet ports support.
> 
> Signed-off-by: Landen Chao <landen.chao@...iatek.com>
> ---
>  .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> index d174ad214857..c57b2571165f 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> @@ -143,6 +143,50 @@
>  	mdio: mdio-bus {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
> +
> +		switch@0 {
> +			compatible = "mediatek,mt7531";
> +			reg = <0>;
> +			reset-gpios = <&pio 54 0>;
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					label = "wan";
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					label = "lan0";
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +					label = "lan1";
> +				};
> +
> +				port@3 {
> +					reg = <3>;
> +					label = "lan2";
> +				};
> +
> +				port@4 {
> +					reg = <4>;
> +					label = "lan3";
> +				};
> +
> +				port@6 {
> +					reg = <6>;
> +					label = "cpu";
> +					ethernet = <&gmac0>;
> +					phy-mode = "2500base-x";
> +				};

Is there any reason why you're not specifying a fixed-link node here?

> +			};
> +		};
> +
>  	};
>  };
>  
> -- 
> 2.17.1

Thanks,
-Vladimir