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3. Ethernet

3.1. Dts Configuration​

3.1.1. Public Configuration​

kernel-6.1/arch/arm64/boot/dts/rockchip/rv1126b.dtsi

gmac: ethernet@21c70000 {
        compatible = "rockchip,rv1126b-gmac", "snps,dwmac-4.20a";
        reg = <0x21c70000 0x10000>;
        interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "macirq", "eth_wake_irq";
        rockchip,grf = <&grf>;
        rockchip,php_grf = <&ioc_grf>;
        clocks = <&cru CLK_GMAC_125M>, <&cru CLK_50M_GMAC_IOBUF_VI>,
                 <&cru PCLK_GMAC>, <&cru ACLK_GMAC>,
                 <&cru CLK_GMAC_PTP_REF>;
        clock-names = "stmmaceth", "clk_mac_ref",
                      "pclk_mac", "aclk_mac",
                      "ptp_ref";
        resets = <&cru SRST_ARESETN_GMAC>;
        reset-names = "stmmaceth";

        snps,mixed-burst;
        snps,tso;
        ...

3.1.2. Board-level configuration​

kernel-6.1/arch/arm64/boot/dts/rockchip/rv1126b-firefly-cam-1126bq38.dtsi

#ifdef FF_GMAC
&gmac &#123;
        phy-mode = "rmii";
        clock_in_out = "input";

        snps,reset-gpio = <&gpio5 RK_PB4 GPIO_ACTIVE_LOW>;
        snps,reset-active-low;
        snps,reset-delays-us = <0 20000 150000>;

        pinctrl-names = "default";
        pinctrl-0 = <&ethm1_miim_pins
                     &ethm1_tx_bus2_pins
                     &ethm1_rx_bus2_pins
                     &ethm1_mclk_pins>;

        phy-handle = <&rmii_phy>;
        status = "okay";
&#125;;

&mdio &#123;
        rmii_phy: rmii-phy@1 &#123;
                compatible = "ethernet-phy-ieee802.3-c22";
                reg = <0x1>;
        &#125;;
&#125;;
#endif

3.1.3. View IP Address​

  • Double The Ethernet port is connected to the network. You can check the IP address through the debug serial port or adb, such as

    ifconfig eth0
    eth0  Link encap:Ethernet  HWaddr 36:0a:d2:60:c9:05  Driver rk_gmac-dwmac
          inet addr:168.168.101.68  Bcast:168.168.255.255  Mask:255.255.0.0 
          inet6 addr: fe80::3290:2dc:3624:1dec/64 Scope: Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15804 errors:0 dropped:1 overruns:0 frame:0 
          TX packets:68 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:1811566 TX bytes:6748 
          Interrupt:75

3.1.4. Connectivity Test​

  • eth0

    ping -I eth0 -c 10 168.168.100.149                                        
    PING 168.168.100.149 (168.168.100.149) from 168.168.101.68 eth0: 56(84) bytes of data.
    64 bytes from 168.168.100.149: icmp_seq=1 ttl=64 time=0.424 ms
    64 bytes from 168.168.100.149: icmp_seq=2 ttl=64 time=0.561 ms
    64 bytes from 168.168.100.149: icmp_seq=3 ttl=64 time=0.538 ms
    64 bytes from 168.168.100.149: icmp_seq=4 ttl=64 time=0.507 ms
    64 bytes from 168.168.100.149: icmp_seq=5 ttl=64 time=0.755 ms
    64 bytes from 168.168.100.149: icmp_seq=6 ttl=64 time=0.657 ms
    64 bytes from 168.168.100.149: icmp_seq=7 ttl=64 time=0.696 ms
    64 bytes from 168.168.100.149: icmp_seq=8 ttl=64 time=0.784 ms
    64 bytes from 168.168.100.149: icmp_seq=9 ttl=64 time=0.544 ms
    64 bytes from 168.168.100.149: icmp_seq=10 ttl=64 time=0.750 ms

    --- 168.168.100.149 ping statistics ---
    10 packets transmitted, 10 received, 0% packet loss, time 9058ms
    rtt min/avg/max/mdev = 0.424/0.621/0.784/0.119 ms