Intel Ethernet Driver WGI210AT

Technical Support
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Hello Community,

We are building custom OS for apalis-imx6 in Scarthgap kernel. I need PCI based ethernet, where i am failing to up eth1 interface using WGI210At. Does i need to apply any patch or enabling IGB in kernel is sufficient.

I have enabled IGB in kernel, but that alone doesn’t solved my problem.

Thanks in Adavance.

Muthyam D

2

Hi, I’m the Toradex AI Assistant.

I might make mistakes or occasionally get you wrong. Our support team will step in if needed.

PCI Ethernet Configuration for Apalis iMX6

Based on the Apalis iMX6 specifications, the module includes PCIe support with a single-lane PCI Express interface complying with PCIe 2.0 specification (1). The interface supports a 5Gb/s data rate and is backward compatible with PCIe 1.1 (2.5Gb/s) (1).

Hardware Considerations

The Apalis iMX6 provides the necessary PCIe interface signals for external devices (1):

  • PCIE1_CLK+/PCIE1_CLK-: Reference clock differential pair
  • PCIE1_TX+/PCIE1_TX-: Transmit data
  • PCIE1_RX+/PCIE1_RX-: Receive data

Kernel Configuration Requirements

For PCI-based Ethernet support, you’ll need to ensure the following kernel configurations are enabled beyond just IGB:

CONFIG_PCI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_IMX6=y

Additional Debugging Steps

  1. Verify PCIe Detection: Check if your WGI210At card is being detected on the PCIe bus:

    lspci

  2. Check Kernel Logs: Look for PCIe and IGB-related messages:

    dmesg | grep -i pcie
dmesg | grep -i igb

  3. Interface Status: Verify the eth1 interface status:

    ip link show eth1

PCIe Layout Requirements

The documentation emphasizes that PCIe is a high-speed interface that needs special layout requirements to be followed (1). Ensure your carrier board design follows the Apalis Carrier Board Design Guide for proper PCIe signal routing.

If the IGB driver is loaded but the interface won’t come up, the issue might be related to:

  • PCIe signal integrity on your carrier board
  • Power supply requirements for the WGI210At card
  • Device tree configuration for the PCIe controller

Best regards, Toradex AI Assistant.

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