netdev - Re: [Intel-wired-lan] [PATCH next-queue v6 3/4] igc: Enable PCIe PTM

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Message-ID: <33b1a8ab-f1ca-dce6-57bc-d1d22569376a@linux.intel.com>
Date:   Wed, 4 Aug 2021 15:57:54 +0300
From:   "Fuxbrumer, Dvora" <dvorax.fuxbrumer@...ux.intel.com>
To:     Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        intel-wired-lan@...ts.osuosl.org
Cc:     pmenzel@...gen.mpg.de, linux-pci@...r.kernel.org,
        richardcochran@...il.com, hch@...radead.org,
        netdev@...r.kernel.org, bhelgaas@...gle.com, helgaas@...nel.org
Subject: Re: [Intel-wired-lan] [PATCH next-queue v6 3/4] igc: Enable PCIe PTM

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 <vinicius.gomes@...el.com>
> ---
>   drivers/net/ethernet/intel/igc/igc_main.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@...ux.intel.com>