一、SGMII+PHY

1、修改设备树

• combophy

其中属性 rockchip,sgmii-mac-sel 表示使用的是哪个 gmac：

&combphy1_usq {
     + rockchip,sgmii-mac-sel = <0>; /* Use gmac0 for sgmii */
     status = "okay";
};

• xpcs

&xpcs {
     status = "okay";
};

• gmac0

&gmac0 {
     phy-mode = "sgmii";
     rockchip,pipegrf = <&pipegrf>;
     rockchip,xpcs = <&xpcs>;
     snps,reset-gpio = <&gpio2 RK_PC2 GPIO_ACTIVE_LOW>;
     snps,reset-active-low;
     snps,reset-delays-us = <0 20000 100000>;
     assigned-clocks = <&cru SCLK_GMAC0_RX_TX>;
     assigned-clock-parents = <&gmac0_xpcsclk>;
     pinctrl-names = "default";
     pinctrl-0 = <&gmac0_miim>;
     power-domains = <&power RK3568_PD_PIPE>;
     phys = <&combphy1_usq PHY_TYPE_SGMII>;
     phy-handle = <&sgmii_phy>;
     status = "okay";
};
&mdio0 {
     sgmii_phy: phy@1 {
     compatible = "ethernet-phy-ieee802.3-c22";
     reg = <0x1>;
     };
};

• gmac1

&gmac1 {
     phy-mode = "sgmii";
     rockchip,pipegrf = <&pipegrf>;
     rockchip,xpcs = <&xpcs>;
     snps,reset-gpio = <&gpio2 RK_PC2 GPIO_ACTIVE_LOW>;
     snps,reset-active-low;
     snps,reset-delays-us = <0 20000 100000>;
     assigned-clocks = <&cru SCLK_GMAC1_RX_TX>;
     assigned-clock-parents = <&gmac1_xpcsclk>;
     pinctrl-names = "default";
     pinctrl-0 = <&gmac1_miim>;
     power-domains = <&power RK3568_PD_PIPE>;
     phys = <&combphy1_usq PHY_TYPE_SGMII>;
     phy-handle = <&sgmii_phy>;
     status = "okay";
};
&mdio1 {
    sgmii_phy: phy@1 {
        compatible = "ethernet-phy-ieee802.3-c22";
        reg = <0x1>;
    };
};

2、openwrt系统

驱动补丁：

3、其它系统

无操作

二、SGMII+非PHY

1、修改设备树

&gmac1 {
        phy-mode = "sgmii";

        rockchip,pipegrf = <&pipegrf>;
        rockchip,xpcs = <&xpcs>;

        assigned-clocks = <&cru SCLK_GMAC1_RX_TX>;
        assigned-clock-parents = <&gmac1_xpcsclk>;

        power-domains = <&power RK3568_PD_PIPE>;
        phys = <&combphy2 PHY_TYPE_SGMII>;

        status = "okay";

        fixed-link {
                speed = <1000>;
                full-duplex;
        };
};

2、驱动补丁

三、回环测试

1000baseX 走强制模式，PCS会自己link up，而SGMII 需要协商link， 这种情况一般是switch端没有固定好1000baseX模式的，之前rtl8310 switch端也是更新了很多次固件
我建议可以主控端先做一下回环，飞线要尽量短，
//driver 包产生
CONFIG_NET_PKTGEN=y
cd /proc/net/pktgen/
echo “add_device eth0” > /proc/net/pktgen/kpktgend_0
echo “pkt_size 1440” > /proc/net/pktgen/eth0
echo “count 99999999” > /proc/net/pktgen/eth0
echo “dst_mac FF:FF:FF:FF:FF:FF” > /proc/net/pktgen/eth0
echo “start” > /proc/net/pktgen/pgctrl
通过这种方式产生包，ifconfig 查看统计，确认能收到包。

本站的文章和资源来自互联网或者站长的原创，按照 CC BY -NC -SA 3.0 CN协议发布和共享，转载或引用本站文章应遵循相同协议。如果有侵犯版权的资源请尽快联系站长，我们会在24h内删除有争议的资源。欢迎大家多多交流，期待共同学习进步。