I have done some tests on a PCIe gen 2 based USB3380 card on an IMX6Q-based reference board using the latest mainline kernel with the associated net2280 driver. The only way, at the moment to make it work is to force gen 1 link speed. Is this common for all gen 2 cards? Are there fixes or patches available that will make it possible to reenable gen 2? I wonder if this problem might be caused by iMX6 errata ERR005184 - "PCIe: Clock pointers can lose sync during clock rate changes"? BR, Tord
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