EVEN WHEN IT WORKS (AS HERE), it gives PCIe Bus Errors.
ubuntu@tegra-ubuntu:~$ more /etc/nv_tegra_release
# R24 (release), REVISION: 2.0, GCID: 7691362, BOARD: t210ref, EABI: aarch64, DATE: Thu Sep  8 20:59:21 UTC 2016
ubuntu@tegra-ubuntu:~$ lspci
[   80.780546] pcieport 0000:00:01.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=0008(Transmitter ID)
[   80.791292] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=00001000/00002000
[   80.799792] pcieport 0000:00:01.0:    [12] Replay Timer Timeout
00:01.0 PCI bridge: NVIDIA Corporation Device 0fae (rev a1)
01:00.0 PCI bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
02:01.0 Bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
02:02.0 PCI bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)

OR AFTER RESET IT WORKED OK BUT lspci broke again.

ubuntu@tegra-ubuntu:~$ lspci
[   65.870177] pcieport 0000:00:01.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=0008(Transmitter ID)
[   65.880918] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=00003040/00002000
[   65.889347] pcieport 0000:00:01.0:    [ 6] Bad TLP
[   65.895572] pcieport 0000:00:01.0:    [12] Replay Timer Timeout
[   65.903920] pcieport 0000:00:01.0: PCIe Bus Error: severity=Uncorrected (Fatal), type=Transaction Layer, id=0008(Requester ID
[   65.915419] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=00044000/00000000
[   65.923946] pcieport 0000:00:01.0:    [14] Completion Timeout     (First)
[   65.930896] pcieport 0000:00:01.0:    [18] Malformed TLP
[   65.937038] pcieport 0000:00:01.0:   TLP Header: 0a000001 0000a010 00101d70 00000000
00:01.0 PCI bridge: NVIDIA Corporation Device 0fae (rev a1)
01:00.0 PCI bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
02:01.0 Bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
02:02.0 PCI bridge: PLX Technology, Inc. PEX 8613 12-lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
ubuntu@tegra-ubuntu:~$ [   66.174070] pcieport 0000:00:01.0: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=0008(Tr
[   66.185968] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=00001081/00002000
[   66.195354] pcieport 0000:00:01.0:    [ 0] Receiver Error
[   66.201502] pcieport 0000:00:01.0:    [ 7] Bad DLLP
[   66.207656] pcieport 0000:00:01.0:    [12] Replay Timer Timeout
[   66.220365] pcieport 0000:00:01.0: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=0008(Transmitter ID)
[   66.230838] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=000011c1/00002000
[   66.239217] pcieport 0000:00:01.0:    [ 0] Receiver Error
[   66.245411] pcieport 0000:00:01.0:    [ 6] Bad TLP
[   66.251500] pcieport 0000:00:01.0:    [ 7] Bad DLLP
[   66.257625] pcieport 0000:00:01.0:    [ 8] RELAY_NUM Rollover
[   66.263745] pcieport 0000:00:01.0:    [12] Replay Timer Timeout
[   66.275851] pcieport 0000:00:01.0: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=0008(Transmitter ID)
[   66.286329] pcieport 0000:00:01.0:   device [10de:0fae] error status/mask=000011c1/00002000
[   66.294704] pcieport 0000:00:01.0:    [ 0] Receiver Error
[   66.300793] pcieport 0000:00:01.0:    [ 6] Bad TLP
[   66.306919] pcieport 0000:00:01.0:    [ 7] Bad DLLP
[   66.313075] pcieport 0000:00:01.0:    [ 8] RELAY_NUM Rollover
[   66.319165] pcieport 0000:00:01.0:    [12] Replay Timer Timeout
[   97.909096] tegra-pcie 1003000.pcie-controller: PCIE: Unknown, signature: ffffffff
[  108.436020] BUG: soft lockup - CPU#3 stuck for 29s! [swapper/3:0]