DESK-MX8M-L/Peripherals/Ethernet
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| Version | Issue Date | Notes | |
| Jan 2022 | First DESK-MX8M release | ||
| 1.0.1 | Jun 2022 | Added MAC address info page | |
Contents
Peripheral Ethernet[edit | edit source]
The ethernet interface is made available through the i.MX8M fec interface which should be initialized on the device tree.
Device tree configuration[edit | edit source]
Here below an example of device tree configuration used on standard DAVE's kit for the ORCA SOM:
From imx8mp-mito8mplus-cb1001.dts :
&fec {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fec>;
phy-mode = "rgmii-id";
phy-handle = <ðphy1>;
fsl,magic-packet;
status = "okay";
mdio {
#address-cells = <1>;
#size-cells = <0>;
ethphy1: ethernet-phy@8 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <8>;
eee-broken-1000t;
eee-broken-100tx;
};
};
};
From imx8mp-mito8mplus.dtsi :
&eqos {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_eqos>;
phy-mode = "rgmii-id";
phy-handle = <ðphy0>;
status = "okay";
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
#size-cells = <0>;
ethphy0: ethernet-phy@7 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <7>;
eee-broken-1000t;
eee-broken-100tx;
};
};
};
...
...
&iomuxc {
...
...
pinctrl_eqos: eqosgrp {
fsl,pins = <
MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC 0x3
MX8MP_IOMUXC_ENET_MDIO__ENET_QOS_MDIO 0x3
MX8MP_IOMUXC_ENET_RD0__ENET_QOS_RGMII_RD0 0x91
MX8MP_IOMUXC_ENET_RD1__ENET_QOS_RGMII_RD1 0x91
MX8MP_IOMUXC_ENET_RD2__ENET_QOS_RGMII_RD2 0x91
MX8MP_IOMUXC_ENET_RD3__ENET_QOS_RGMII_RD3 0x91
MX8MP_IOMUXC_ENET_RXC__CCM_ENET_QOS_CLOCK_GENERATE_RX_CLK 0x91
MX8MP_IOMUXC_ENET_RX_CTL__ENET_QOS_RGMII_RX_CTL 0x91
MX8MP_IOMUXC_ENET_TD0__ENET_QOS_RGMII_TD0 0x1f
MX8MP_IOMUXC_ENET_TD1__ENET_QOS_RGMII_TD1 0x1f
MX8MP_IOMUXC_ENET_TD2__ENET_QOS_RGMII_TD2 0x1f
MX8MP_IOMUXC_ENET_TD3__ENET_QOS_RGMII_TD3 0x1f
MX8MP_IOMUXC_ENET_TX_CTL__ENET_QOS_RGMII_TX_CTL 0x1f
MX8MP_IOMUXC_ENET_TXC__CCM_ENET_QOS_CLOCK_GENERATE_TX_CLK 0x1f
MX8MP_IOMUXC_GPIO1_IO10__GPIO1_IO10 0x19
>;
};
pinctrl_fec: fecgrp {
fsl,pins = <
MX8MP_IOMUXC_SAI1_RXD2__ENET1_MDC 0x3
MX8MP_IOMUXC_SAI1_RXD3__ENET1_MDIO 0x3
MX8MP_IOMUXC_SAI1_RXD4__ENET1_RGMII_RD0 0x91
MX8MP_IOMUXC_SAI1_RXD5__ENET1_RGMII_RD1 0x91
MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2 0x91
MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3 0x91
MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC 0x91
MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL 0x91
MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0 0x1f
MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1 0x1f
MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2 0x1f
MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3 0x1f
MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL 0x1f
MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC 0x1f
MX8MP_IOMUXC_SAI1_RXD0__GPIO4_IO02 0x19
>;
};
...
...
};
Accessing the peripheral[edit | edit source]
ORCA SOM provides the network interface mapped as eth0 and eth1.
Linux messages at boot time[edit | edit source]
eth0
... ... [ 2.253084] fec 30be0000.ethernet eth0: registered PHC device 0 ... [ 6.211939] Generic PHY 30be0000.ethernet-1:08: attached PHY driver [Generic PHY] (mii_bus:phy_addr=30be0000.ethernet-1:08, irq=POLL)
eth1
[ 6.139981] imx-dwmac 30bf0000.ethernet eth1: PHY [stmmac-1:07] driver [Microchip KSZ9131 Gigabit PHY] [ 6.162868] imx-dwmac 30bf0000.ethernet eth1: No Safety Features support found [ 6.170459] imx-dwmac 30bf0000.ethernet eth1: IEEE 1588-2008 Advanced Timestamp supported [ 6.181622] imx-dwmac 30bf0000.ethernet eth1: registered PTP clock [ 6.187870] imx-dwmac 30bf0000.ethernet eth1: configuring for phy/rgmii-id link mode
Cable connection:
... ... [ 10.422034] fec 30be0000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off [ 10.429651] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Check the interface with ifconfig[edit | edit source]
root@desk-mx8mp:~# ifconfig eth0
eth0 Link encap:Ethernet HWaddr f2:b3:2f:ee:0c:69
inet6 addr: fe80::f0b3:2fff:feee:c69/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:16657 errors:0 dropped:0 overruns:0 frame:0
TX packets:109 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1806277 (1.7 MiB) TX bytes:19191 (18.7 KiB)
root@desk-mx8mp:~# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 2e:89:64:91:78:a6
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:45
root@desk-mx8mp:~#
Test with iperf3[edit | edit source]
root@desk-mx8mp:~# iperf3 -t 5 -c 192.168.0.125 Connecting to host 192.168.0.125, port 5201 [ 5] local 192.168.0.146 port 56130 connected to 192.168.0.131 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 114 MBytes 954 Mbits/sec 0 385 KBytes [ 5] 1.00-2.00 sec 113 MBytes 945 Mbits/sec 0 385 KBytes [ 5] 2.00-3.00 sec 112 MBytes 938 Mbits/sec 0 403 KBytes [ 5] 3.00-4.00 sec 112 MBytes 940 Mbits/sec 0 423 KBytes [ 5] 4.00-5.00 sec 112 MBytes 941 Mbits/sec 0 423 KBytes [ 5] 5.00-6.00 sec 113 MBytes 945 Mbits/sec 0 423 KBytes [ 5] 6.00-7.00 sec 112 MBytes 940 Mbits/sec 0 423 KBytes [ 5] 7.00-8.00 sec 112 MBytes 941 Mbits/sec 0 465 KBytes [ 5] 8.00-9.00 sec 112 MBytes 943 Mbits/sec 0 465 KBytes [ 5] 9.00-10.00 sec 112 MBytes 938 Mbits/sec 0 465 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.10 GBytes 943 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 1.10 GBytes 941 Mbits/sec receiver iperf Done. root@desk-mx8mp:~#
MAC Address[edit | edit source]
For the MAC Address programming, refers to the following wiki page
