On Mon, Jun 13, 2016 at 02:05:26PM -0500, Bjorn Helgaas wrote: > This is a slightly different proposal for the PTM support Jonathan > proposed here: > > > http://lkml.kernel.org/r/1462956446-27361-2-git-send-email-jonathan.y...@intel.com > > I split this into three pieces mostly for ease in reviewing. They > could all be squashed: > > - Enable PTM in root ports and switches automatically at boot > - Enable PTM in endpoints when requested by driver > - Add clock granularity information > > I have some open questions about how PTM works on Root Complex > Integrated Endpoints and whether we should enable it automatically > even without a driver request. And I probably left out some details > of the clock granularity computation, so treat this as more of an RFC > than anything. > > Bjorn > > --- > > Bjorn Helgaas (2): > PCI: Add pci_enable_ptm() for drivers to enable PTM on endpoints > PCI: Add PTM clock granularity information > > Jonathan Yong (1): > PCI: Add Precision Time Measurement (PTM) support > > > drivers/pci/pci.h | 6 ++ > drivers/pci/pcie/Kconfig | 12 ++++ > drivers/pci/pcie/Makefile | 1 > drivers/pci/pcie/ptm.c | 140 > +++++++++++++++++++++++++++++++++++++++++ > drivers/pci/probe.c | 3 + > include/linux/pci.h | 13 ++++ > include/uapi/linux/pci_regs.h | 12 +++- > 7 files changed, 186 insertions(+), 1 deletion(-) > create mode 100644 drivers/pci/pcie/ptm.c
These are on pci/ptm and queued for v4.9.
