root@imx8mmsk:~# dmesg | grep pci
[    0.000000] Kernel command line: console=ttymxc1,115200 earlycon=ec_imx6q,0x30890000,115200 root=/dev/mmcblk2p2 rootwait rw pci=nomsi
[    1.443803] ehci-pci: EHCI PCI platform driver
[    1.459888] ohci-pci: OHCI PCI platform driver
[    3.098171] imx6q-pcie 33800000.pcie: 33800000.pcie supply epdev_on not found, using dummy regulator
[    3.107937] OF: PCI: host bridge /pcie@0x33800000 ranges:
[    3.113368] OF: PCI:   No bus range found for /pcie@0x33800000, using [bus 00-ff]
[    3.133614] imx6q-pcie 33800000.pcie: Initialize PHY with PLL REfCLK!.
[    3.140483] imx6q-pcie 33800000.pcie: PHY Initialization End!.
[    3.146662] imx6q-pcie 33800000.pcie: pcie phy pll is locked.
[    3.185167] imx6q-pcie 33800000.pcie: Speed change timeout
[    3.190659] imx6q-pcie 33800000.pcie: Roll back to GEN1 link!
[    3.196413] imx6q-pcie 33800000.pcie: Link up, Gen1
[    3.202615] imx6q-pcie 33800000.pcie: PCI host bridge to bus 0000:00
[    3.209022] pci_bus 0000:00: root bus resource [bus 00-ff]
[    3.214532] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    3.220741] pci_bus 0000:00: root bus resource [mem 0x18000000-0x1fefffff]
[    3.227662] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
[    3.227686] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff 64bit]
[    3.227695] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff pref]
[    3.227743] pci 0000:00:00.0: supports D1
[    3.227748] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
[    3.228096] pci 0000:01:00.0: [10ec:8168] type 00 class 0x020000
[    3.228241] pci 0000:01:00.0: reg 0x10: [io  0x0000-0x00ff]
[    3.228360] pci 0000:01:00.0: reg 0x18: [mem 0x00000000-0x00000fff 64bit]
[    3.228433] pci 0000:01:00.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref]
[    3.228924] pci 0000:01:00.0: supports D1 D2
[    3.228929] pci 0000:01:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    3.241254] pci 0000:00:00.0: BAR 0: assigned [mem 0x18000000-0x180fffff 64bit]
[    3.248590] pci 0000:00:00.0: BAR 14: assigned [mem 0x18100000-0x181fffff]
[    3.255497] pci 0000:00:00.0: BAR 15: assigned [mem 0x18200000-0x182fffff pref]
[    3.262826] pci 0000:00:00.0: BAR 6: assigned [mem 0x18300000-0x1830ffff pref]
[    3.270076] pci 0000:00:00.0: BAR 13: assigned [io  0x1000-0x1fff]
[    3.276280] pci 0000:01:00.0: BAR 4: assigned [mem 0x18200000-0x18203fff 64bit pref]
[    3.284100] pci 0000:01:00.0: BAR 2: assigned [mem 0x18100000-0x18100fff 64bit]
[    3.291485] pci 0000:01:00.0: BAR 0: assigned [io  0x1000-0x10ff]
[    3.297618] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[    3.302864] pci 0000:00:00.0:   bridge window [io  0x1000-0x1fff]
[    3.308981] pci 0000:00:00.0:   bridge window [mem 0x18100000-0x181fffff]
[    3.315787] pci 0000:00:00.0:   bridge window [mem 0x18200000-0x182fffff pref]
[    3.323467] pcieport 0000:00:00.0: Signaling PME with IRQ 259
root@imx8mmsk:~#