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PCIe Link not up on a Custom IMX6Q Board

Question asked by Raj Nikumbh on Oct 21, 2014
Latest reply on Oct 28, 2014 by igorpadykov



I have a custom IMX6Q board in which I am not able to get PCIe up. I am using LTIB environment.


I have looked into other posts regarding the clock enable in RC mode, which seems to be enabled linux-3.0.35. I am trying to connect a dual port NIC card from Intel (0G174P) which is supported by the igb driver in kernel.


I always get this error during the kernel boot.


iMX6 PCIe PCIe RC mode imx_pcie_pltfm_probe entering.

PCIE: imx_pcie_pltfm_probe start link up.

link up failed, DB_R0:0x00d5f700, DB_R1:0x08200000!

IMX PCIe port: link down!


I had initially only connected  PCIe RX, TX and CLK (driven by IMX6). I tried connecting a GPIO for PCI_Reset but that didn't help my cause.


Can you please suggest me what should I do next in order to get PCIe interface checked out?