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| author | Jonathan Yong <jonathan.yong@intel.com> | 2016-06-11 22:13:38 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-08-15 21:44:08 +0300 |
| commit | 9bb04a0c4e261187be904d05c2bcd1da0eebc20c (patch) | |
| tree | 725a72656a45640205c5d05885dc9c3fd41f01e0 /drivers/pci/pcie/Kconfig | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
| download | linux-9bb04a0c4e261187be904d05c2bcd1da0eebc20c.tar.xz | |
PCI: Add Precision Time Measurement (PTM) support
Add Precision Time Measurement (PTM) support (see PCIe r3.1, sec 6.22).
Enable PTM on PTM Root devices and switch ports. This does not enable PTM
on endpoints.
There currently are no PTM-capable devices on the market, but it is
expected to be supported by the Intel Apollo Lake platform.
[bhelgaas: complete rework]
Signed-off-by: Jonathan Yong <jonathan.yong@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie/Kconfig')
| -rw-r--r-- | drivers/pci/pcie/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 7fcea75afa4c..7ce77635e5ad 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -92,3 +92,14 @@ config PCIE_DPC will be handled by the DPC driver. If your system doesn't have this capability or you do not want to use this feature, it is safe to answer N. + +config PCIE_PTM + bool "PCIe Precision Time Measurement support" + default n + depends on PCIEPORTBUS + help + This enables PCI Express Precision Time Measurement (PTM) + support. + + This is only useful if you have devices that support PTM, but it + is safe to enable even if you don't. |