[PATCH net-next 2/9] docs: ptp.rst: Add information about NVIDIA Mellanox devices
From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Date: 2023-05-10 20:56:00
Subsystem:
documentation, ptp hardware clock support, the rest · Maintainers:
Jonathan Corbet, Richard Cochran, Linus Torvalds
The mlx5_core driver has implemented ptp clock driver functionality but lacked documentation about the PTP devices. This patch adds information about the Mellanox device family. Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com> --- Documentation/driver-api/ptp.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/Documentation/driver-api/ptp.rst b/Documentation/driver-api/ptp.rst
index c6ef41cf6130..6eab5253b800 100644
--- a/Documentation/driver-api/ptp.rst
+++ b/Documentation/driver-api/ptp.rst@@ -123,3 +123,16 @@ Supported hardware - LPF settings (bandwidth, phase limiting, automatic holdover, physical layer assist (per ITU-T G.8273.2)) - Programmable output PTP clocks, any frequency up to 1GHz (to other PHY/MAC time stampers, refclk to ASSPs/SoCs/FPGAs) - Lock to GNSS input, automatic switching between GNSS and user-space PHC control (optional) + + * NVIDIA Mellanox + + - GPIO + - Certain variants of ConnectX-6 Dx and later products support one + GPIO which can time stamp external triggers and one GPIO to produce + periodic signals. + - Certain variants of ConnectX-5 and older products support one GPIO, + configured to either time stamp external triggers or produce + periodic signals. + - PHC instances + - All ConnectX devices have a free-running counter + - ConnectX-6 Dx and later devices have a UTC format counter
--
2.38.4