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

sophiehu — Thu, 31 Aug 2023 07:05:52 GMT

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

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

jimmychan — Fri, 01 Sep 2023 07:39:30 GMT

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

topic [i.MX8M Plus] device tree config of ethernet switch icplus IP175G in i.MX Processors

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

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