PCIe ===== This guide will show you how to do a basic functional test of the PCIe interface on the phyCORE-i.MX8X development kit. .. image:: ../../images/phycore-imx8x/pcm-065_pcie.webp :width: 800px Requirements ------------- * `Intel Gigabit CT Desktop Adapter `_ - PCIe v1.1 (2.5GT/s) Hardware Setup ---------------- .. warning:: The PCIe interface is not hot swappable and the development kit must be powered off before connecting/disconnecting any PCIe device. * With the phyCORE-i.MX8X development kit **powered off** and with the power supply removed, connect the Network Adapter to the PCIe Slot at X81. .. image:: ../../images/phycore-imx8x/pcm-065_pcie-callout.webp :width: 500px * Connect one end of the included CAT5e ethernet cable to the PCIe card and the other end of the cable to your network switch. * Power on the development kit and boot into Linux. PCIe Connection ---------------- * Verify that the card was properly initialized by checking for the "eth2" interface in the boot log. .. code-block:: none :caption: Target (Linux) dmesg | grep eth2 .. code-block:: none :caption: Expected Output [ 3.023821] e1000e 0000:01:00.0 eth2: (PCI Express:2.5GT/s:Width x1) 68:05:ca:bd:46:45 [ 3.023842] e1000e 0000:01:00.0 eth2: Intel(R) PRO/1000 Network Connection [ 3.023863] e1000e 0000:01:00.0 eth2: MAC: 3, PHY: 8, PBA No: E46981-008 [ 6.950556] 8021q: adding VLAN 0 to HW filter on device eth2 [ 9.646530] e1000e: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None [ 9.654470] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready Test PCIe ---------- * Test your connection by pinging a known server. .. code-block:: none :caption: Target (Linux) ping google.com -c 5 .. code-block:: none :caption: Expected Output PING google.com (142.250.69.206) 56(84) bytes of data. 64 bytes from sea30s08-in-f14.1e100.net (142.250.69.206): icmp_seq=1 ttl=116 time=4.70 ms 64 bytes from sea30s08-in-f14.1e100.net (142.250.69.206): icmp_seq=2 ttl=116 time=4.71 ms 64 bytes from sea30s08-in-f14.1e100.net (142.250.69.206): icmp_seq=3 ttl=116 time=4.62 ms 64 bytes from sea30s08-in-f14.1e100.net (142.250.69.206): icmp_seq=4 ttl=116 time=4.60 ms 64 bytes from sea30s08-in-f14.1e100.net (142.250.69.206): icmp_seq=5 ttl=116 time=4.61 ms