root@astrarp-desktop:/home/astra-rp# lspci -vvv -s 0005:01:00.0 | grep -E "LnkCap|LnkSta" LnkCap: Port #0, Speed 16GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <1us, L1 <64us LnkSta: Speed 2.5GT/s (downgraded), Width x8 (ok) LnkCap2: Supported Link Speeds: 2.5-16GT/s, Crosslink- Retimer+ 2Retimers+ DRS- LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+ root@astrarp-desktop:/home/astra-rp# dmesg | grep -i pcie [ 8.109892] tegra194-pcie 14100000.pcie: Adding to iommu group 53 [ 8.112543] tegra194-pcie 14100000.pcie: host bridge /bus@0/pcie@14100000 ranges: [ 8.112567] tegra194-pcie 14100000.pcie: MEM 0x2080000000..0x20a7ffffff -> 0x2080000000 [ 8.112577] tegra194-pcie 14100000.pcie: MEM 0x20a8000000..0x20afffffff -> 0x0040000000 [ 8.112582] tegra194-pcie 14100000.pcie: IO 0x0030100000..0x00301fffff -> 0x0030100000 [ 8.112896] tegra194-pcie 14100000.pcie: iATU unroll: enabled [ 8.112900] tegra194-pcie 14100000.pcie: Detected iATU regions: 8 outbound, 2 inbound [ 9.224234] tegra194-pcie 14100000.pcie: Phy link never came up [ 10.227466] tegra194-pcie 14100000.pcie: Phy link never came up [ 10.227608] tegra194-pcie 14100000.pcie: PCI host bridge to bus 0001:00 [ 10.234778] pcieport 0001:00:00.0: Adding to iommu group 53 [ 10.235388] pcieport 0001:00:00.0: PME: Signaling with IRQ 192 [ 10.236629] pcieport 0001:00:00.0: AER: enabled with IRQ 192 [ 10.240845] tegra194-pcie 14160000.pcie: Adding to iommu group 56 [ 10.245179] tegra194-pcie 14160000.pcie: host bridge /bus@0/pcie@14160000 ranges: [ 10.245201] tegra194-pcie 14160000.pcie: MEM 0x2140000000..0x2427ffffff -> 0x2140000000 [ 10.245207] tegra194-pcie 14160000.pcie: MEM 0x2428000000..0x242fffffff -> 0x0040000000 [ 10.245210] tegra194-pcie 14160000.pcie: IO 0x0036100000..0x00361fffff -> 0x0036100000 [ 10.245544] tegra194-pcie 14160000.pcie: iATU unroll: enabled [ 10.245546] tegra194-pcie 14160000.pcie: Detected iATU regions: 8 outbound, 2 inbound [ 10.351967] tegra194-pcie 14160000.pcie: Link up [ 10.362262] tegra194-pcie 14160000.pcie: Link up [ 10.362334] tegra194-pcie 14160000.pcie: PCI host bridge to bus 0004:00 [ 10.367266] tegra_pcie_edma: module verification failed: signature and/or required key missing - tainting kernel [ 10.371501] pcieport 0004:00:00.0: Adding to iommu group 56 [ 10.371706] pcieport 0004:00:00.0: PME: Signaling with IRQ 194 [ 10.372252] pcieport 0004:00:00.0: AER: enabled with IRQ 194 [ 10.373806] tegra194-pcie 141a0000.pcie: Adding to iommu group 57 [ 10.492749] tegra194-pcie 141a0000.pcie: host bridge /bus@0/pcie@141a0000 ranges: [ 10.492775] tegra194-pcie 141a0000.pcie: MEM 0x2800000000..0x2b27ffffff -> 0x2800000000 [ 10.492782] tegra194-pcie 141a0000.pcie: MEM 0x2b28000000..0x2b2fffffff -> 0x0040000000 [ 10.492786] tegra194-pcie 141a0000.pcie: IO 0x003a100000..0x003a1fffff -> 0x003a100000 [ 10.493128] tegra194-pcie 141a0000.pcie: iATU unroll: enabled [ 10.493130] tegra194-pcie 141a0000.pcie: Detected iATU regions: 8 outbound, 2 inbound [ 10.599804] tegra194-pcie 141a0000.pcie: Link up [ 10.601336] tegra194-pcie 141a0000.pcie: Link up [ 10.601433] tegra194-pcie 141a0000.pcie: PCI host bridge to bus 0005:00 [ 10.608476] pci 0005:01:00.0: 16.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x8 link at 0005:00:00.0 (capable of 126.024 Gb/s with 16.0 GT/s PCIe x8 link) [ 10.743494] pcieport 0005:00:00.0: Adding to iommu group 57 [ 10.743938] pcieport 0005:00:00.0: PME: Signaling with IRQ 196 [ 10.744281] pcieport 0005:00:00.0: AER: enabled with IRQ 196 [ 10.745239] pcie_dma_host 0005:01:00.0: Adding to iommu group 57 [ 10.745447] pcie_dma_host 0005:01:00.0: enabling device (0000 -> 0002) [ 11.485797] pcie_dma_host 0005:01:00.0: DMA mem, IOVA: 0xe0000000 size: 268435456 root@astrarp-desktop:/home/astra-rp#