TX2 NX pcie M.2 storage disk

When I use tx2 nx pcie M.2 storage disk, it sometimes can’t find M.2 storage disk when power on start. What does it have to do with？
log_tx2_nx.txt (58.5 KB)
log_lspci.txt (13.1 KB)
tegra186-p3636-0001-common.dtsi (5.8 KB)