From: Andrew Lunn <andrew@lunn.ch>
To: Richard Cochran <richardcochran@gmail.com>
Cc: Woojung.Huh@microchip.com, linux@armlinux.org.uk,
Horatiu.Vultur@microchip.com, Divya.Koppera@microchip.com,
netdev@vger.kernel.org, hkallweit1@gmail.com,
davem@davemloft.net, kuba@kernel.org, robh+dt@kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
UNGLinuxDriver@microchip.com, Madhuri.Sripada@microchip.com,
Manohar.Puri@microchip.com
Subject: Re: [PATCH net-next 2/3] dt-bindings: net: micrel: Configure latency values and timestamping check for LAN8814 phy
Date: Sat, 12 Mar 2022 21:04:31 +0100 [thread overview]
Message-ID: <Yiz8z3UPqNANa5zA@lunn.ch> (raw)
In-Reply-To: <20220312024828.GA15046@hoboy.vegasvil.org>
> PTP4l(8) System Manager's Manual PTP4l(8)
>
> NAME
> ptp4l - PTP Boundary/Ordinary/Transparent Clock
>
> ...
>
> egressLatency
> Specifies the difference in nanoseconds between the actual
> transmission time at the reference plane and the reported trans‐
> mit time stamp. This value will be added to egress time stamps
> obtained from the hardware. The default is 0.
>
> ingressLatency
> Specifies the difference in nanoseconds between the reported re‐
> ceive time stamp and the actual reception time at reference
> plane. This value will be subtracted from ingress time stamps
> obtained from the hardware. The default is 0.
>
Hi Richard
Do these get passed to the kernel so the hardware can act on them, or
are they used purely in userspace by ptp4l?
If they has passed to the kernel, could we provide a getter as well as
a setter, so the defaults hard coded in the driver can be read back?
Andrew
next prev parent reply other threads:[~2022-03-12 20:04 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 9:34 [PATCH net-next 0/3] Add support for 1588 in LAN8814 Divya Koppera
2022-03-04 9:34 ` [PATCH net-next 1/3] net: phy: micrel: Fix concurrent register access Divya Koppera
2022-03-04 9:34 ` [PATCH net-next 2/3] dt-bindings: net: micrel: Configure latency values and timestamping check for LAN8814 phy Divya Koppera
2022-03-04 12:50 ` Andrew Lunn
2022-03-04 13:55 ` Richard Cochran
2022-03-07 5:02 ` Divya.Koppera
2022-03-07 4:40 ` Divya.Koppera
2022-03-07 13:08 ` Andrew Lunn
2022-03-08 10:05 ` Divya.Koppera
2022-03-08 13:54 ` Andrew Lunn
2022-03-08 14:54 ` Richard Cochran
2022-03-08 15:43 ` Horatiu Vultur
2022-03-08 18:10 ` Andrew Lunn
2022-03-08 22:14 ` Horatiu Vultur
2022-03-08 23:36 ` Andrew Lunn
2022-03-09 1:46 ` Richard Cochran
2022-03-09 1:58 ` Richard Cochran
2022-03-09 13:24 ` Horatiu Vultur
2022-03-09 14:55 ` Russell King (Oracle)
2022-03-09 19:52 ` Richard Cochran
2022-03-11 14:28 ` Horatiu Vultur
2022-03-11 15:08 ` Richard Cochran
2022-03-12 19:36 ` Allan W. Nielsen
2022-03-13 2:41 ` Richard Cochran
2022-03-13 4:04 ` Richard Cochran
2022-03-11 15:21 ` Woojung.Huh
2022-03-12 2:48 ` Richard Cochran
2022-03-12 20:04 ` Andrew Lunn [this message]
2022-03-13 2:46 ` Richard Cochran
2022-03-13 15:07 ` Andrew Lunn
2022-03-13 19:37 ` Allan W. Nielsen
2022-03-13 20:03 ` Richard Cochran
2022-03-13 20:07 ` Richard Cochran
2022-03-11 14:07 ` Horatiu Vultur
2022-03-07 21:33 ` Rob Herring
2022-03-04 9:34 ` [PATCH net-next 3/3] net: phy: micrel: 1588 support " Divya Koppera
2022-03-04 13:06 ` Andrew Lunn
2022-03-07 4:58 ` Divya.Koppera
2022-03-07 13:19 ` Andrew Lunn
2022-03-04 13:46 ` Kurt Kanzenbach
2022-03-04 13:57 ` Richard Cochran
2022-03-04 12:50 ` [PATCH net-next 0/3] Add support for 1588 in LAN8814 patchwork-bot+netdevbpf
2022-03-04 13:06 ` Andrew Lunn
2022-03-04 13:21 ` David Miller
2022-03-04 13:47 ` Andrew Lunn
2022-03-04 14:37 ` David Miller
2022-03-04 14:06 ` Richard Cochran
2022-03-04 14:17 ` Andrew Lunn
2022-03-04 15:42 ` Richard Cochran
2022-03-17 12:16 ` Michael Walle
2022-03-17 14:05 ` Allan W. Nielsen
2022-03-17 14:38 ` Andrew Lunn
2022-03-17 19:30 ` Allan W. Nielsen
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