patch 'net/txgbe: fix Amber-Lite temperature tracking' has been queued to stable release 25.11.3

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 25.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/04/26. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/cc0635c67ae5a0518db017e3630b42b48d2a98df

Thanks.

Kevin

---
>From cc0635c67ae5a0518db017e3630b42b48d2a98df Mon Sep 17 00:00:00 2001
From: Zaiyu Wang <zaiyuwang at trustnetic.com>
Date: Wed, 24 Jun 2026 19:52:53 +0800
Subject: [PATCH] net/txgbe: fix Amber-Lite temperature tracking
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ upstream commit baefc6aec85f64495acefde4bb30143e14e83255 ]

Previously, temperature tracking for the amlite NIC was handled by
firmware together with the hardware setup. However, the firmware-based
PHY configuration has proven to be unstable.

Re-add the temperature tracking function directly in the driver and
invoke it periodically to ensure the PHY remains calibrated. According
to the hardware recommendation, the tracking sequence should be run at
least every 100 ms to keep temperature drift within 5 °C. Considering
the software and hardware overhead, a 2-second interval is used as a
practical trade-off that still meets stability requirements while
minimizing performance impact.

The periodic tracking is implemented using a timer in the driver, and
the sequence itself is the same as the one originally performed during
link setup.

Fixes: fb6eb170dfa2 ("net/txgbe: add basic link configuration for Amber-Lite")

Signed-off-by: Zaiyu Wang <zaiyuwang at trustnetic.com>
---
 drivers/net/txgbe/txgbe_ethdev.c | 44 +++++++++++++++++++++++++++++++-
 drivers/net/txgbe/txgbe_ethdev.h |  1 +
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
index f57f94130f..719583135b 100644
--- a/drivers/net/txgbe/txgbe_ethdev.c
+++ b/drivers/net/txgbe/txgbe_ethdev.c
@@ -2012,6 +2012,8 @@ skip_link_setup:
 
 	hw->bp_event_interval = 100 * 1000;
-	if (hw->mac.type == txgbe_mac_aml || hw->mac.type == txgbe_mac_aml40)
+	if (hw->mac.type == txgbe_mac_aml || hw->mac.type == txgbe_mac_aml40) {
 		rte_eal_alarm_set(hw->bp_event_interval, txgbe_dev_e56_check_bp_event, dev);
+		rte_eal_alarm_set(1000 * 1000 * 2, txgbe_dev_check_aml_temp_event, dev);
+	}
 
 	if (tm_conf->root && !tm_conf->committed)
@@ -2061,4 +2063,5 @@ txgbe_dev_stop(struct rte_eth_dev *dev)
 	if (hw->mac.type == txgbe_mac_aml || hw->mac.type == txgbe_mac_aml40) {
 		rte_eal_alarm_cancel(txgbe_dev_e56_check_bp_event, dev);
+		rte_eal_alarm_cancel(txgbe_dev_check_aml_temp_event, dev);
 		rte_eal_alarm_cancel(txgbe_dev_setup_link_alarm_handler_aml, hw);
 	}
@@ -2933,4 +2936,43 @@ txgbe_dev_supported_ptypes_get(struct rte_eth_dev *dev, size_t *no_of_elements)
 }
 
+void txgbe_dev_check_aml_temp_event(void *param)
+{
+	struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
+	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+	uint32_t link_speed = 0, val = 0;
+	s32 status = 0;
+	int temp;
+
+	if (hw == NULL)
+		return;
+
+	status = txgbe_e56_get_temp(hw, &temp);
+	if (status)
+		temp = DEFAULT_TEMP;
+
+	if (!(temp - hw->temperature > 4 ||
+		hw->temperature - temp > 4))
+		goto out;
+
+	hw->temperature = temp;
+	val = rd32(hw, TXGBE_PORT);
+	if (val & TXGBE_AMLITE_LED_LINK_40G)
+		link_speed = TXGBE_LINK_SPEED_40GB_FULL;
+	else if (val & TXGBE_AMLITE_LED_LINK_25G)
+		link_speed = TXGBE_LINK_SPEED_25GB_FULL;
+	else
+		link_speed = TXGBE_LINK_SPEED_10GB_FULL;
+
+	rte_spinlock_lock(&hw->phy_lock);
+	if (hw->mac.type == txgbe_mac_aml)
+		txgbe_temp_track_seq(hw, link_speed);
+	else if (hw->mac.type == txgbe_mac_aml40)
+		txgbe_temp_track_seq_40g(hw, link_speed);
+	rte_spinlock_unlock(&hw->phy_lock);
+
+out:
+	rte_eal_alarm_set(1000 * 1000 * 2, txgbe_dev_check_aml_temp_event, dev);
+}
+
 void txgbe_dev_e56_check_bp_event(void *param)
 {
diff --git a/drivers/net/txgbe/txgbe_ethdev.h b/drivers/net/txgbe/txgbe_ethdev.h
index 309db3bfe9..c32c61d8bf 100644
--- a/drivers/net/txgbe/txgbe_ethdev.h
+++ b/drivers/net/txgbe/txgbe_ethdev.h
@@ -748,4 +748,5 @@ void txgbe_vlan_hw_strip_bitmap_set(struct rte_eth_dev *dev,
 void txgbe_config_vlan_strip_on_all_queues(struct rte_eth_dev *dev,
 						  int mask);
+void txgbe_dev_check_aml_temp_event(void *param);
 void txgbe_dev_e56_check_bp_event(void *param);
 #endif /* _TXGBE_ETHDEV_H_ */
-- 
2.55.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-07-30 10:16:02.107037718 +0100
+++ 0020-net-txgbe-fix-Amber-Lite-temperature-tracking.patch	2026-07-30 10:16:01.459990794 +0100
@@ -1 +1 @@
-From baefc6aec85f64495acefde4bb30143e14e83255 Mon Sep 17 00:00:00 2001
+From cc0635c67ae5a0518db017e3630b42b48d2a98df Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit baefc6aec85f64495acefde4bb30143e14e83255 ]
+
@@ -26 +27,0 @@
-Cc: stable at dpdk.org
@@ -35 +36 @@
-index 1dd849f578..5626527d75 100644
+index f57f94130f..719583135b 100644