[Bug 195253] New: disabling PCIEASPM makes link speed drop from 5 GT/s to 2.5 GT/s

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

https://bugzilla.kernel.org/show_bug.cgi?id=195253

            Bug ID: 195253
           Summary: disabling PCIEASPM makes link speed drop from 5 GT/s
                    to 2.5 GT/s
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.9
          Hardware: ARM
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PCI
          Assignee: drivers_pci@xxxxxxxxxxxxxxxxxxxx
          Reporter: uwe+kernel@xxxxxxxxxxxxxxxxx
        Regression: No

Created attachment 255759
  --> https://bugzilla.kernel.org/attachment.cgi?id=255759&action=edit
lspci -vv with PCIEASPM=n

Hello,

on an Armada XP (i.e. arm) system disabling PCIEASPM results in different link
speed. See attachments for lspci with and without PCIEASPM.

Best regards
Uwe

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