root@nanopct4:~# dmesg | grep pcie
[    2.840778] rockchip-pcie f8000000.pcie: no vpcie12v regulator found
[    3.338135] rockchip-pcie f8000000.pcie: no vpcie12v regulator found
[    3.377184] rockchip-pcie f8000000.pcie: host bridge /pcie@f8000000 ranges:
[    3.377223] rockchip-pcie f8000000.pcie:      MEM 0x00fa000000..0x00fbdfffff -> 0x00fa000000
[    3.377244] rockchip-pcie f8000000.pcie:       IO 0x00fbe00000..0x00fbefffff -> 0x00fbe00000
[    3.377563] rockchip-pcie f8000000.pcie: PCI host bridge to bus 0000:00
[    3.399966] pcieport 0000:00:00.0: enabling device (0000 -> 0002)
[    3.400271] pcieport 0000:00:00.0: PME: Signaling with IRQ 242
[    3.400622] pcieport 0000:00:00.0: AER: enabled with IRQ 242