From 0495b97e4150d2913fa0a5cbc7ab56d5e5378327 Mon Sep 17 00:00:00 2001
From: Sonic Build Admin <sonicbld@microsoft.com>
Date: Thu, 22 Jan 2026 16:24:00 +0000
Subject: [PATCH] [Mellanox] Add phcsync activation for mellanox platforms.

Activate phcsync script for Mellanox platforms in order to sync the asic clock with the system clock.
---
 syncd/scripts/syncd_init_common.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/syncd/scripts/syncd_init_common.sh b/syncd/scripts/syncd_init_common.sh
index 516a480e..c0555f3a 100644
--- a/syncd/scripts/syncd_init_common.sh
+++ b/syncd/scripts/syncd_init_common.sh
@@ -378,6 +378,10 @@ config_syncd_mlnx()
 
     # Ensure no redundant newlines
     sed -i '/^$/d' /tmp/sai.profile
+
+    # As long as sonic does not support PTP which can be enabled/disabled, Nvidia platforms enables
+    # phcsync for all systems. If HW does not support it, it will do nothing.
+    supervisorctl start phcsync
 }
 
 config_syncd_centec()