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器件型号：AM625工具/软件：
您好：
我正在尝试将以太网交换机连接到 AM625 上的 RGMII2 接口。 相关开关是 Microchip LAN8374。
我面临的问题是能够将开关 RGMII 端口连接到 AM625 的 RGMII2 接口 — 具体而言，我无法将端口节点的`以太网`属性链接到 cpsw_port2 节点、因为它会导致开关初始化失败（最终因为它找不到主节点）。 如果我将交换机连接到 cpsw3g 节点、我可以成功初始化交换机、但这似乎是将其连接到 RGMII1 接口而不是 RGMII2。
CPSW 外设的器件树配置如下：
&cpsw3g {
bootph-all;
pinctrl-names = "default";
status = "okay";
pinctrl-0 = <ðernettx_pins_default>, <ðernett1internalswitch_pins_default>;
fixed-link {
speed = <1000>;
full-duplex;
};
};
/* TX Ethernet */
&cpsw_port1 {
bootph-all;
phy-mode = "rmii";
phy-handle = <&cpsw3g_phy0>;
//ti,dual-emac-pvid = <1>;
status = "okay";
};
/* T1 Ethernet Switch */
&cpsw_port2 {
//phy-mode = "rgmii-id";
phy-mode = "rgmii";
#address-cells = <1>;
#size-cells = <0>;
//ti,dual-emac-pvid = <2>;
status = "okay";
fixed-link {
speed = <1000>;
full-duplex;
};
};
/* Ethernet MDIO */
&cpsw3g_mdio {
bootph-all;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <ðernetmdio_pins_default>;
cpsw3g_phy0: ethernet-phy@7 {
bootph-all;
reg = <7>;
rx-internal-delay-ps = <1>;
tx-internal-delay-ps = <1>;
};
};
我的开关配置为：
lan9374: switch@0 {
compatible = "microchip,lan9374";
reg = <0>;
spi-max-frequency = <44000000>;
power-supply = <&p1v1>;
phy-mode = "rgmii-id";
status = "okay";
mdio {
#address-cells = <1>;
#size-cells = <0>;
t1phy2a: ethernet-phy@0{
reg = <0x0>;
};
t1phy2b: ethernet-phy@1{
reg = <0x1>;
};
t1phy2d: ethernet-phy@2{
reg = <0x2>;
};
t1phy2f: ethernet-phy@3{
reg = <0x3>;
};
t1phy2e: ethernet-phy@6{
reg = <0x6>;
};
t1phy2c: ethernet-phy@7{
reg = <0x7>;
};
};
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
label = "t1port2a";
phy-mode = "internal";
phy-handle = <&t1phy2a>;
};
port@1 {
reg = <1>;
label = "t1port2b";
phy-mode = "internal";
phy-handle = <&t1phy2b>;
};
port@2 {
reg = <2>;
label = "t1port2d";
phy-mode = "internal";
phy-handle = <&t1phy2d>;
};
port@3 {
reg = <3>;
label = "t1port2f";
phy-mode = "internal";
phy-handle = <&t1phy2f>;
};
port@4 {
reg = <4>;
label = "othermicro";
phy-mode = "rmii";
tx-internal-delay-ps = <2000>;
rx-internal-delay-ps = <2000>;
fixed-link {
speed = <100>;
full-duplex;
};
};
/* Link to AM625 */
port@5 {
reg = <5>;
label = "cpu";
phy-mode = "rgmii-id";
tx-internal-delay-ps = <2000>;
rx-internal-delay-ps = <2000>;
//ethernet = <&cpsw_port2>;
ethernet = <&cpsw3g>;
fixed-link {
speed = <1000>;
full-duplex;
};
};
port@6 {
reg = <6>;
label = "t1port2e";
phy-mode = "internal";
phy-handle = <&t1phy2e>;
};
port@7 {
reg = <7>;
label = "t1port2c";
phy-mode = "internal";
phy-handle = <&t1phy2c>;
};
};
};
您能否告知 DSA 交换机应如何连接到 RGMII2？
谢谢、
Ben
