3531PCIE调试

最近在调试3531的PCIE，PCIE外接的是PCIE转串口芯片，但是在看官方的demo板的时候似乎硬件也没有工作，
不知是否是内核的问题？大家有没有遇到过？
[code]pci 0000:00:00.0: [19e5:3531] type 1 class 0x000604
pci 0000:00:00.0: reg 10: [mem 0x00000000-0x007fffff pref]
pci 0000:00:00.0: reg 14: [mem 0x00000000-0x0000ffff]
pci 0000:00:00.0: reg 38: [mem 0x00000000-0x0000ffff pref]
pci 0000:00:00.0: supports D1
pci 0000:00:00.0: PME# supported from D0 D1 D3hot
pci 0000:00:00.0: PME# disabled
PCI: bus0: Fast back to back transfers disabled
pcie_read_from_device->485,pcie0 not link up!
PCI: bus1: Fast back to back transfers enabled
pci 0000:02:00.0: [19e5:3531] type 1 class 0x000604
pci 0000:02:00.0: reg 10: [mem 0x00000000-0x007fffff pref]
pci 0000:02:00.0: reg 14: [mem 0x00000000-0x0000ffff]
pci 0000:02:00.0: reg 38: [mem 0x00000000-0x0000ffff pref]
pci 0000:02:00.0: supports D1
pci 0000:02:00.0: PME# supported from D0 D1 D3hot
pci 0000:02:00.0: PME# disabled
PCI: bus2: Fast back to back transfers disabled
pcie_read_from_device->485,pcie1 not link up!
PCI: bus3: Fast back to back transfers enabled
pci 0000:02:00.0: BAR 0: assigned [mem 0x60000000-0x607fffff pref]
pci 0000:02:00.0: BAR 0: set to [mem 0x60000000-0x607fffff pref] (PCI address [0x60000000-0x607fffff])
pci 0000:02:00.0: BAR 1: assigned [mem 0x60800000-0x6080ffff]
pci 0000:02:00.0: BAR 1: set to [mem 0x60800000-0x6080ffff] (PCI address [0x60800000-0x6080ffff])
pci 0000:02:00.0: BAR 6: assigned [mem 0x60810000-0x6081ffff pref]
pci 0000:02:00.0: PCI bridge to [bus 03-03]
pci 0000:02:00.0:   bridge window [io  disabled]
pci 0000:02:00.0:   bridge window [mem disabled]
pci 0000:02:00.0:   bridge window [mem pref disabled]
pci 0000:00:00.0: BAR 0: assigned [mem 0x30000000-0x307fffff pref]
pci 0000:00:00.0: BAR 0: set to [mem 0x30000000-0x307fffff pref] (PCI address [0x30000000-0x307fffff])
pci 0000:00:00.0: BAR 1: assigned [mem 0x30800000-0x3080ffff]
pci 0000:00:00.0: BAR 1: set to [mem 0x30800000-0x3080ffff] (PCI address [0x30800000-0x3080ffff])
pci 0000:00:00.0: BAR 6: assigned [mem 0x30810000-0x3081ffff pref]
pci 0000:00:00.0: PCI bridge to [bus 01-01]
pci 0000:00:00.0:   bridge window [io  disabled]
pci 0000:00:00.0:   bridge window [mem disabled]
pci 0000:00:00.0:   bridge window [mem pref disabled]
PCI: CLS 32 bytes, default 32
[/code]