[PATCH v5 4/4] doc: add PTP IDPF documentation

Soumyadeep Hore
2026-01-22T11:28:08Z

Updates the IDPF Documentation with PTP feature.

Signed-off-by: Soumyadeep Hore <soumyadeep.hore@intel.com>
---
doc/guides/nics/features/idpf.ini | 1 +
doc/guides/nics/idpf.rst | 15 +++++++++++++++
doc/guides/rel_notes/release_26_03.rst | 4 ++++
3 files changed, 20 insertions(+)

diff --git a/doc/guides/nics/features/idpf.ini b/doc/guides/nics/features/idpf.ini
index 63b799289a..f546648924 100644
--- a/doc/guides/nics/features/idpf.ini
+++ b/doc/guides/nics/features/idpf.ini
@@ -19,6 +19,7 @@ RSS reta update = Y
L3 checksum offload = P
L4 checksum offload = P
Timestamp offload = P
+Timesync = Y
Packet type parsing = Y
Basic stats = Y
Linux = Y
diff --git a/doc/guides/nics/idpf.rst b/doc/guides/nics/idpf.rst
index b99cc18188..1435cb78ca 100644
--- a/doc/guides/nics/idpf.rst
+++ b/doc/guides/nics/idpf.rst
@@ -109,3 +109,18 @@ The paths are chosen based on 2 conditions:
A value "P" means the offload feature is not supported by vector path.
If any not supported features are used, idpf vector PMD is disabled
and the scalar paths are chosen.
+
+Time Synchronization
+~~~~~~~~~~~~~~~~~~~~
+
+The system operator can run a PTP (Precision Time Protocol) client application
+to synchronize the time on the network card in ACC
+(and optionally the time on the system) to the PTP primary.
+
+IDPF PMD supports PTP client applications that use the DPDK IEEE 1588 API
+to communicate with the PTP primary clock.
+Note that PTP client application needs to run on PF in ACC.
+
+.. code-block:: console
+
+ examples/dpdk-ptpclient -l 0-3 -n 3 -a 0000:ec:00.1 -- -T 1 -p 0x1
diff --git a/doc/guides/rel_notes/release_26_03.rst b/doc/guides/rel_notes/release_26_03.rst
index 15dabee7a1..597147f789 100644
--- a/doc/guides/rel_notes/release_26_03.rst
+++ b/doc/guides/rel_notes/release_26_03.rst
@@ -55,6 +55,10 @@ New Features
Also, make sure to start the actual text at the margin.
=======================================================

+* **Updated Intel idpf ethernet driver.**
+
+ * Added support for Timesync features.
+

Removed Items
-------------
--
2.47.1