[i.MX8M Plus] device tree config of ethernet switch icplus IP175G

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[i.MX8M Plus] device tree config of ethernet switch icplus IP175G

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sophiehu
Contributor III

Hi NXP,

We have a custom imx8mp borad and connect two ethernet to ethernet transceiver RTL8211F. One of them (&fec) connects to ethernet switch icplus IP175G to expand to 4 ports. We config dts like below. Function is OK but it shows only one port ethernet interface (eth0).

&fec {
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_fec>;
    phy-mode = "rgmii-id";
    phy-handle = <&ethphy1>;
    fsl,magic-packet;
    status = "okay";

    mdio {
        #address-cells = <1>;
        #size-cells = <0>;

        ethphy1: ethernet-phy@3 {
            compatible = "ethernet-phy-ieee802.3-c22";
            reg = <3>;
            eee-broken-1000t;
            reset-gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
            reset-assert-us = <10000>;
            reset-deassert-us = <80000>;
            realtek,aldps-enable;
            realtek,clkout-disable;
        };
    };
};

Now we want to expand IP175G to 4 port ethernet interfaces and try to modify dts like below, but it still shows only one (eth0).

&fec {
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_fec>;
    phy-mode = "rgmii-id";
    phy-reset-gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
    status = "okay";

    ports {
        #address-cells = <1>;
        #size-cells = <0>;

        port@2 {
            reg = <2>;
            phy-handle = <&ethphy1>;
            phy_id = <0x02430318>;
            label = "lan1";
        };
        port@3 {
            reg = <3>;
            phy-handle = <&ethphy2>;
            phy_id = <0x02430318>;
            label = "lan2";
        };
        port@4 {
            reg = <4>;
            phy-handle = <&ethphy3>;
            phy_id = <0x02430318>;
            label = "lan3";
        };
        port@6 {
            reg = <6>;
            phy-handle = <&ethphy4>;
            phy_id = <0x02430318>;
            label = "lan4";
        };
    };

    mdio {
        #address-cells = <1>;
        #size-cells = <0>;

        ethphy1: ethernet-phy@2 {
            reg = <2>;
            phy-mode = "rgmii-id";
        };
        ethphy2: ethernet-phy@3 {
            reg = <3>;
            phy-mode = "rgmii-id";
        };
        ethphy3: ethernet-phy@4 {
            reg = <4>;
            phy-mode = "rgmii-id";
        };
        ethphy4: ethernet-phy@6 {
            reg = <6>;
            phy-mode = "rgmii-id";
        };
    };
};

Would you suggest me how to config dts to create 4 port ethernet interfaces?

Best Regards,
Sophie

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670 次查看
jimmychan
NXP TechSupport
NXP TechSupport

It is better to ask ICPLUS to provide you the example device tree setting for their switch.

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