From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fuxbrumer, Dvora Date: Wed, 4 Aug 2021 15:57:54 +0300 Subject: [Intel-wired-lan] [PATCH next-queue v6 3/4] igc: Enable PCIe PTM In-Reply-To: <20210727033657.39885-4-vinicius.gomes@intel.com> References: <20210727033657.39885-1-vinicius.gomes@intel.com> <20210727033657.39885-4-vinicius.gomes@intel.com> Message-ID: <33b1a8ab-f1ca-dce6-57bc-d1d22569376a@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: On 7/27/2021 06:36, Vinicius Costa Gomes wrote: > Enables PCIe PTM (Precision Time Measurement) support in the igc > driver. Notifies the PCI devices that PCIe PTM should be enabled. > > PCIe PTM is similar protocol to PTP (Precision Time Protocol) running > in the PCIe fabric, it allows devices to report time measurements from > their internal clocks and the correlation with the PCIe root clock. > > The i225 NIC exposes some registers that expose those time > measurements, those registers will be used, in later patches, to > implement the PTP_SYS_OFFSET_PRECISE ioctl(). > > Signed-off-by: Vinicius Costa Gomes > --- > drivers/net/ethernet/intel/igc/igc_main.c | 6 ++++++ > 1 file changed, 6 insertions(+) > Tested-by: Dvora Fuxbrumer