diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 89e4d58..b83ef7f 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -123,6 +123,9 @@ API Changes
 
 * The devargs union field virtual is renamed to virt for C++ compatibility.
 
+* Add new functions in ethdev to support IEEE1588: rte_eth_timesync_time_adjust()
+  rte_eth_timesync_time_get(), rte_eth_timesync_time_set()
+
 
 ABI Changes
 -----------
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index f593f6e..d7d2714 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -3284,6 +3284,42 @@ rte_eth_timesync_read_tx_timestamp(uint8_t port_id, struct timespec *timestamp)
 }
 
 int
+rte_eth_timesync_time_adjust(uint8_t port_id, int64_t delta)
+{
+	struct rte_eth_dev *dev;
+
+	VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timesync_time_adjust, -ENOTSUP);
+	return (*dev->dev_ops->timesync_time_adjust)(dev, delta);
+}
+
+int
+rte_eth_timesync_time_get(uint8_t port_id, struct timespec *timestamp)
+{
+	struct rte_eth_dev *dev;
+
+	VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timesync_time_get, -ENOTSUP);
+	return (*dev->dev_ops->timesync_time_get)(dev, timestamp);
+}
+
+int
+rte_eth_timesync_time_set(uint8_t port_id, struct timespec *timestamp)
+{
+	struct rte_eth_dev *dev;
+
+	VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timesync_time_set, -ENOTSUP);
+	return (*dev->dev_ops->timesync_time_set)(dev, timestamp);
+}
+
+int
 rte_eth_dev_get_reg_length(uint8_t port_id)
 {
 	struct rte_eth_dev *dev;
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 8a8c82b..c639064 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1129,6 +1129,17 @@ typedef int (*eth_timesync_read_tx_timestamp_t)(struct rte_eth_dev *dev,
 						struct timespec *timestamp);
 /**< @internal Function used to read a TX IEEE1588/802.1AS timestamp. */
 
+typedef int (*eth_timesync_time_adjust)(struct rte_eth_dev *dev, int64_t);
+/**< @internal Function used to adjust device clock */
+
+typedef int (*eth_timesync_time_get)(struct rte_eth_dev *dev,
+						struct timespec *timestamp);
+/**< @internal Function used to get time from device clock. */
+
+typedef int (*eth_timesync_time_set)(struct rte_eth_dev *dev,
+						struct timespec *timestamp);
+/**< @internal Function used to get time from device clock */
+
 typedef int (*eth_get_reg_length_t)(struct rte_eth_dev *dev);
 /**< @internal Retrieve device register count  */
 
@@ -1312,6 +1323,12 @@ struct eth_dev_ops {
 	eth_timesync_read_rx_timestamp_t timesync_read_rx_timestamp;
 	/** Read the IEEE1588/802.1AS TX timestamp. */
 	eth_timesync_read_tx_timestamp_t timesync_read_tx_timestamp;
+	/** Adjust the device clock */
+	eth_timesync_time_adjust timesync_time_adjust;
+	/** Get the device clock timespec */
+	eth_timesync_time_get timesync_time_get;
+	/** Set the device clock timespec */
+	eth_timesync_time_set timesync_time_set;
 };
 
 /**
@@ -3598,6 +3615,53 @@ extern int rte_eth_timesync_read_rx_timestamp(uint8_t port_id,
 extern int rte_eth_timesync_read_tx_timestamp(uint8_t port_id,
 					      struct timespec *timestamp);
 
+/**
+ * Adjust the timesync clock on an Ethernet device..
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param delta
+ *   The adjustment in nanoseconds
+ *
+ * @return
+ *   - 0: Success.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_time_adjust(uint8_t port_id, int64_t delta);
+
+/**
+ * Read the time from the timesync clock on an Ethernet device.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param time
+ *   Pointer to the timespec struct.
+ *
+ * @return
+ *   - 0: Success.
+ */
+extern int rte_eth_timesync_time_get(uint8_t port_id,
+	      struct timespec *time);
+
+
+/**
+ * Set the time of the timesync clock on an Ethernet device.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param time
+ *   Pointer to the timespec struct.
+ *
+ * @return
+ *   - 0: Success.
+ *   - -EINVAL: No timestamp is available.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_time_set(uint8_t port_id,
+	      struct timespec *time);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/librte_ether/rte_ether_version.map b/lib/librte_ether/rte_ether_version.map
index 8345a6c..78b46c1 100644
--- a/lib/librte_ether/rte_ether_version.map
+++ b/lib/librte_ether/rte_ether_version.map
@@ -127,3 +127,12 @@ DPDK_2.1 {
 	rte_eth_timesync_read_tx_timestamp;
 
 } DPDK_2.0;
+
+DPDK_2.2 {
+	global:
+
+	rte_eth_timesync_time_adjust;
+	rte_eth_timesync_time_get;
+	rte_eth_timesync_time_set;
+
+} DPDK_2.1;
