Ethernet

Dts Configuration

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;
           ...

Board-level configuration

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

   #ifdef FF_GMAC
   &gmac {
           phy-mode = "rgmii";
           clock_in_out = "output";

           snps,reset-gpio = <&gpio5 RK_PB4 GPIO_ACTIVE_LOW>;
           snps,reset-active-low;
           /* Reset time is 20ms, 100ms for rtl8211f */
           snps,reset-delays-us = <0 20000 100000>;

           assigned-clocks = <&cru CLK_MAC_OUT2IO>;
           assigned-clock-rates = <25000000>;

           pinctrl-names = "default";
           pinctrl-0 = <&ethm1_miim_pins
                        &ethm1_tx_bus2_pins
                        &ethm1_rx_bus2_pins
                        &ethm1_rgmii_clk_pins
                        &ethm1_rgmii_bus_pins
                        &eth_clk_25mm1_out_pins>;

           tx_delay = <0x29>;
           rx_delay = <0x16>;

           phy-handle = <&rgmii_phy>;
           status = "okay";
   };

   &mdio {
           rgmii_phy: rgmii-phy@0 {
                   compatible = "ethernet-phy-ieee802.3-c22";
                   reg = <0x0>;
                   clocks = <&cru CLK_MAC_OUT2IO>;
           };
   };
   #endif

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

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