PCI: Add Precision Time Measurement (PTM) support

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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>

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Jonathan Yong 2016-06-11 14:13:38 -05:00 • committed by Bjorn Helgaas

parent 29b4817d40

commit 9bb04a0c4e

7 changed files with 105 additions and 1 deletions

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include/uapi/linux/pci_regs.h

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