linux-kernel - Re: [RFC v2 4/4] arm64: dts: rockchip: Add mt7531 dsa node to BPI-R2-Pro board

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Message-ID: <3557249.iIbC2pHGDl@phil>
Date:   Sat, 30 Apr 2022 16:05:06 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     linux-mediatek@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        Frank Wunderlich <linux@...web.de>
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [RFC v2 4/4] arm64: dts: rockchip: Add mt7531 dsa node to BPI-R2-Pro board

Am Samstag, 30. April 2022, 15:03:47 CEST schrieb Frank Wunderlich:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> Add Device Tree node for mt7531 switch connected to gmac0.
> 
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> ---
> v2:
> - drop status=disabled
> ---
>  .../boot/dts/rockchip/rk3568-bpi-r2-pro.dts   | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
> index ed2f2bd9a016..f0ffbe818170 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
> @@ -437,6 +437,54 @@ &i2c5 {
>  	status = "disabled";
>  };
>  
> +&mdio0 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	switch@0 {
> +		compatible = "mediatek,mt7531";
> +		reg = <0>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			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@5 {
> +				reg = <5>;
> +				label = "cpu";
> +				ethernet = <&gmac0>;
> +				phy-mode = "rgmii";
- phy-mode: String, the following values are acceptable for port labeled
	"cpu":
	If compatible mediatek,mt7530 or mediatek,mt7621 is set,
	must be either "trgmii" or "rgmii"
	If compatible mediatek,mt7531 is set,
	must be either "sgmii", "1000base-x" or "2500base-x"

So I guess the phy-mode needs to change?


Heiko

> +
> +				fixed-link {
> +					speed = <1000>;
> +					full-duplex;
> +					pause;
> +				};
> +			};
> +		};
> +	};
> +};
> +
>  &mdio1 {
>  	rgmii_phy1: ethernet-phy@0 {
>  		compatible = "ethernet-phy-ieee802.3-c22";
>