Nino

Hi Igor Thanks for stepping in. I followed the path out of curiosity. My RockPro64 usually runs 2.5" SMR SATA disks, so pcie x1 is not a real bottleneck I tried tinkering some more, but I cannot reproduce the original pcie probing failure (the patch is of course disabled). I rebooted many times, then set bus scan delay to 0ms (same as in andrewz1 PR) rebooted some more. But never got the training timeout error. Do I need a specific configuration or a specific hardware to reproduce the issue?

Narrowed the issue down by testing older Armbian builds - Armbian 23.02 with 5.15.96 Kernel -> x4 link working - Armbian 23.8 with 6.1.50 Kernel -> x4 link working Comparing the patches between 6.1 and 6.6 shows a new patch related to PCIe: https://github.com/armbian/build/blob/main/patch/kernel/archive/rockchip64-6.6/rk3399-fix-pci-phy.patch Building an image without this patch indeed fixes the issue: Linux rockpro64 6.6.30-current-rockchip64 LnkSta: Speed 2.5GT/s (downgraded), Width x4 (ok) So this patch does not work as expected but simply removing it is probably not an acceptable solution. Can anyone with more understanding of PCI have a look into it? Edit: I also commented on the pull request that introduced the patch: https://github.com/armbian/build/pull/6057

Hi I installed a nvme SSD to my rockpro64 (with a generic PCIe adapter card). Somehow it only uses a x1 link instead of x4. I also observed the same behaviour with a x2 SATA card (only x1 link established). Output of lspci: LnkSta: Speed 2.5GT/s (downgraded), Width x1 (downgraded) To rule out hardware issues, I also tried the same setup with Manjaro-ARM which correctly negotiates a x4 link. LnkSta: Speed 2.5GT/s (downgraded), Width x4 dmesg for Armbian [ 2.221206] rockchip-pcie f8000000.pcie: host bridge /pcie@f8000000 ranges: [ 2.221296] rockchip-pcie f8000000.pcie: MEM 0x00fa000000..0x00fbdfffff -> 0x00fa000000 [ 2.221334] rockchip-pcie f8000000.pcie: IO 0x00fbe00000..0x00fbefffff -> 0x00fbe00000 [ 2.222953] rockchip-pcie f8000000.pcie: supply vpcie1v8 not found, using dummy regulator [ 2.223187] rockchip-pcie f8000000.pcie: supply vpcie0v9 not found, using dummy regulator [ 2.286376] rockchip-pcie f8000000.pcie: wait 1000 ms (from device tree) before bus scan [ 3.298661] rockchip-pcie f8000000.pcie: PCI host bridge to bus 0000:00 [ 3.309542] pcieport 0000:00:00.0: enabling device (0000 -> 0002) [ 3.310052] pcieport 0000:00:00.0: PME: Signaling with IRQ 58 [ 3.310984] pcieport 0000:00:00.0: AER: enabled with IRQ 58 virtually identical for Manjaro-ARM [ 1.114557] rockchip-pcie f8000000.pcie: host bridge /pcie@f8000000 ranges: [ 1.114626] rockchip-pcie f8000000.pcie: MEM 0x00fa000000..0x00fbdfffff -> 0x00fa000000 [ 1.114655] rockchip-pcie f8000000.pcie: IO 0x00fbe00000..0x00fbefffff -> 0x00fbe00000 [ 1.115937] rockchip-pcie f8000000.pcie: supply vpcie1v8 not found, using dummy regulator [ 1.116100] rockchip-pcie f8000000.pcie: supply vpcie0v9 not found, using dummy regulator [ 1.176874] rockchip-pcie f8000000.pcie: wait 1000 ms (from device tree) before bus scan [ 2.234398] rockchip-pcie f8000000.pcie: PCI host bridge to bus 0000:00 [ 2.274272] pcieport 0000:00:00.0: enabling device (0000 -> 0002) [ 2.274780] pcieport 0000:00:00.0: PME: Signaling with IRQ 58 [ 2.275722] pcieport 0000:00:00.0: AER: enabled with IRQ 58 I also compared the device trees for Armbian and Manjaro. There are no differences as well. Has anyone a hint for me what I could try to get the x4 link established?