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Step 30: type "peek 0x60000144" in on the 7045 linux prompt, get 000008B0 as result PCIe link status L0 all ready to go!

Step 31: scroll back in bootlog: "ehci-pci: EHCI PCI platform driver" wau! I did not do it.. I did not fix anything in device tree, it was pulled in from Vivado HDF file.

Easy uh?

I plug in PCIe SSD M2 card into slot on the Zynq motherboard, changing GTX location, starting external PCIe PLL and we have again L0 link up!

Step 31: But why isn't the Xilinx PCIe driver loading? Yes, petalinux device tree generator has messed up again, applying post fixes in top.dts

Step 32: lspci

00:00.0 Non-VGA unclassified device: Xilinx Corporation Device 0782
01:00.0 SATA controller: Device 1c28:0122 (rev 14)

Easy uh?

Image Added

Things that work: Xilinx PCIe root complex with standard IP and drivers.

Attached to PCIe root is M2 PCIe SSD.