What does this warning mean?
I also have this message in all the firmware that I used.
# dmesg | grep pcie
[ 1.164613] pcie30_avdd0v9: 900 mV
[ 1.164817] reg-fixed-voltage pcie30-avdd0v9: Looking up vin-supply from device tree
[ 1.164830] pcie30_avdd0v9: supplied by vcc3v3_sys
[ 1.164978] reg-fixed-voltage pcie30-avdd0v9: pcie30_avdd0v9 supplying 900000uV
[ 1.165116] pcie30_avdd1v8: 1800 mV
[ 1.165307] reg-fixed-voltage pcie30-avdd1v8: Looking up vin-supply from device tree
[ 1.165320] pcie30_avdd1v8: supplied by vcc3v3_sys
[ 1.165486] reg-fixed-voltage pcie30-avdd1v8: pcie30_avdd1v8 supplying 1800000uV
[ 1.166586] pcie30_3v3: 100 <--> 3300 mV at 3300 mV
[ 1.805381] rk-pcie 3c0000000.pcie: Looking up vpcie3v3-supply from device tree
[ 1.805493] rk-pcie 3c0000000.pcie: Linked as a consumer to regulator.10
[ 1.805848] rk-pcie 3c0800000.pcie: Looking up vpcie3v3-supply from device tree
[ 1.805909] rk-pcie 3c0000000.pcie: missing legacy IRQ resource
[ 1.805957] rk-pcie 3c0800000.pcie: Linked as a consumer to regulator.10
[ 1.805972] rk-pcie 3c0000000.pcie: Missing *config* reg space
[ 1.806044] rk-pcie 3c0000000.pcie: host bridge /pcie@fe260000 ranges:
[ 1.806103] rk-pcie 3c0000000.pcie: err 0x300000000..0x3007fffff -> 0x00000000
[ 1.806156] rk-pcie 3c0000000.pcie: IO 0x300800000..0x3008fffff -> 0x00800000
[ 1.806207] rk-pcie 3c0000000.pcie: MEM 0x300900000..0x33fffffff -> 0x00900000
[ 1.818283] rk-pcie 3c0800000.pcie: missing legacy IRQ resource
[ 1.818338] rk-pcie 3c0800000.pcie: Missing *config* reg space
[ 1.818384] rk-pcie 3c0800000.pcie: host bridge /pcie@fe280000 ranges:
[ 1.818443] rk-pcie 3c0800000.pcie: err 0x380000000..0x3807fffff -> 0x80000000
[ 1.818507] rk-pcie 3c0800000.pcie: IO 0x380800000..0x3808fffff -> 0x80800000
[ 1.818574] rk-pcie 3c0800000.pcie: MEM 0x380900000..0x3bfffffff -> 0x80900000
[ 2.836282] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 2.839583] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[ 3.849613] rk-pcie 3c0800000.pcie: PCIe Link up, LTSSM is 0x230011
[ 3.859673] rk-pcie 3c0800000.pcie: PCI host bridge to bus 0002:20
[ 3.877677] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 4.427675] pcieport 0002:20:00.0: Signaling PME with IRQ 113
[ 4.445359] pcieport 0002:20:00.0: AER enabled with IRQ 114
[ 4.916254] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 5.929781] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 6.943174] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 7.956376] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 8.969702] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 9.983006] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 10.999649] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 12.012973] rk-pcie 3c0000000.pcie: PCIe Linking... LTSSM is 0x0
[ 13.023308] rk-pcie 3c0000000.pcie: PCIe Link Fail
[ 13.023327] rk-pcie 3c0000000.pcie: failed to initialize host