DESK-MX6UL-L/Peripherals/Ethernet
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Contents
Peripheral Ethernet[edit | edit source]
The ethernet interface is made available through the i.MX6UL 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 AXEL ULite SOM:
From imx6ul-lynx-som0013.dtsi:
&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet1>;
phy-mode = "rmii";
phy-handle = <ðphy0>;
phy-reset-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
phy-reset-post-delay = <500>;
status = "okay";
fsl,dev_id = <0>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
ethphy0: ethernet-phy@3 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0x03>;
};
};
};
&iomuxc {
...
...
pinctrl_enet1: enet1grp {
fsl,pins = <
MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN 0x1b0b0
MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER 0x1b0b0
MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN 0x1b0b0
MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 0x4001b0a8
MX6UL_PAD_GPIO1_IO07__ENET1_MDC 0x1b0b0
MX6UL_PAD_GPIO1_IO06__ENET1_MDIO 0x1b0b0
MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01 0x1b0b0 /* ETH_PHY_RST */
MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02 0x1b0b0 /* ETH_INT */
>;
};
...
...
};
Accessing the peripheral[edit | edit source]
AXEL ULite SOM provides the network interface mapped at eth0.
Linux messages at boot time[edit | edit source]
... ... [ 2.758105] fec 2188000.ethernet: 2188000.ethernet supply phy not found, using dummy regulator [ 3.284051] pps pps0: new PPS source ptp0 [ 3.289349] libphy: fec_enet_mii_bus: probed [ 3.306604] fec 2188000.ethernet eth0: registered PHC device 0... ... ... [ 5.364364] Micrel KSZ8081 or KSZ8091 2188000.ethernet-1:03: attached PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=2188000.ethernet-1:03, irq=POLL) [ 5.379786] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Cable connection:
... ... [ 8.484123] fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx [ 8.503416] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 8.533451] IP-Config: Complete: [ 8.536868] device=eth0, hwaddr=7a:f5:7c:86:e3:ac, ipaddr=192.168.0.90, mask=255.255.255.0, gw=255.255.255.255
Check the interface with ifconfig[edit | edit source]
ifconfroot@desk-mx6ul-axelulite:~# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 7a:f5:7c:86:e3:ac
inet addr:192.168.0.90 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::78f5:7cff:fe86:e3ac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17910 errors:0 dropped:0 overruns:0 frame:0
TX packets:7633 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18948844 (18.0 MiB) TX bytes:1515852 (1.4 MiB)
root@desk-mx6ul-axelulite:~#
Test with iperf[edit | edit source]
root@desk-mx6ul-axelulite:~# iperf3 -c 192.168.0.125 Connecting to host 192.168.0.125, port 5201 [ 5] local 192.168.0.120 port 41332 connected to 192.168.0.125 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 10.7 MBytes 90.0 Mbits/sec 0 127 KBytes [ 5] 1.00-2.00 sec 10.8 MBytes 90.2 Mbits/sec 0 154 KBytes [ 5] 2.00-3.00 sec 11.2 MBytes 93.5 Mbits/sec 0 175 KBytes [ 5] 3.00-4.00 sec 11.0 MBytes 92.6 Mbits/sec 0 185 KBytes [ 5] 4.00-5.00 sec 11.1 MBytes 93.1 Mbits/sec 0 195 KBytes [ 5] 5.00-6.00 sec 11.1 MBytes 93.2 Mbits/sec 0 195 KBytes [ 5] 6.00-7.00 sec 11.1 MBytes 93.4 Mbits/sec 0 212 KBytes [ 5] 7.00-8.00 sec 10.9 MBytes 91.4 Mbits/sec 0 212 KBytes [ 5] 8.00-9.00 sec 11.2 MBytes 94.3 Mbits/sec 0 212 KBytes [ 5] 9.00-10.00 sec 11.1 MBytes 92.8 Mbits/sec 0 212 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 110 MBytes 92.5 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 110 MBytes 92.1 Mbits/sec receiver iperf Done. root@desk-mx6ul-axelulite:~#
