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linux/drivers/pci/pcie
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Bjorn Helgaas 9ab105deb6 PCI/ASPM: Disable ASPM L1.2 Substate if we don't have LTR 
When in the ASPM L1.0 state (but not the PCI-PM L1.0 state), the most
recent LTR value and the LTR_L1.2_THRESHOLD determines whether the link
enters the L1.2 substate.

If we don't have LTR enabled, prevent the use of ASPM L1.2.

PCI-PM L1.2 may still be used because it doesn't depend on
LTR_L1.2_THRESHOLD (see PCIe r4.0, sec 5.5.1).

Tested-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-04-18 16:10:34 -05:00
..
aer Merge branch 'pci/portdrv' 2018-04-04 13:27:58 -05:00
aspm.c PCI/ASPM: Disable ASPM L1.2 Substate if we don't have LTR 2018-04-18 16:10:34 -05:00
dpc.c PCI/DPC: Rename from pcie-dpc.c to dpc.c 2018-03-31 17:48:57 -05:00
Kconfig Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00
Makefile Merge branch 'pci/portdrv' 2018-04-04 13:27:58 -05:00
pme.c PCI/portdrv: Merge pcieport_if.h into portdrv.h 2018-03-09 11:42:01 -06:00
portdrv.h Merge branch 'pci/portdrv' 2018-04-04 13:27:58 -05:00
portdrv_acpi.c PCI/DPC: Do not enable DPC if AER control is not allowed by the BIOS 2018-03-30 17:33:34 -05:00
portdrv_core.c Merge branch 'pci/portdrv' 2018-04-04 13:27:58 -05:00
portdrv_pci.c Merge branch 'pci/portdrv' 2018-04-04 13:27:58 -05:00
ptm.c Merge branch 'pci/spdx' into next 2018-02-01 11:40:07 -06:00