[PATCH net 09/15] ice: E825: perform a soft reset when starting the PHY timer
From: Tony Nguyen <anthony.l.nguyen@intel.com>
Date: 2026-09-11 00:34:51
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jacob Keller <jacob.e.keller@intel.com>
To ensure that the E825 PHY timer begins in a clean state, initiate a PHY
soft reset prior to programming the PHY. This ensures that we clear any
outstanding Tx timestamp memory, and ensures that the PHY internal state
has been completely reset.
Fixes: 7cab44f1c35f ("ice: Introduce ETH56G PHY model for E825C products")
Reviewed-by: Maciek Machnikowski <redacted>
Tested-by: Alexander Nowlin <redacted>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index a3a9f7ce04d2..64e18fe1176b 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c@@ -2120,9 +2120,11 @@ int ice_stop_phy_timer_eth56g(struct ice_hw *hw, u8 port, bool soft_reset) * @hw: pointer to the HW struct * @port: the PHY port to start * - * Start the clock of a PHY port. This must be done as part of the flow to - * re-calibrate Tx and Rx timestamping offsets whenever the clock time is - * initialized or when link speed changes. + * Perform a PHY soft reset and then start the clock for the PHY port. + * + * This must be done as part of the flow to re-calibrate Tx and Rx + * timestamping offsets whenever the clock time is initialized or when link + * speed changes. * * Return: * * %0 - success
@@ -2138,6 +2140,10 @@ int ice_start_phy_timer_eth56g(struct ice_hw *hw, u8 port) tmr_idx = ice_get_ptp_src_clock_index(hw); + err = ice_ptp_phy_soft_reset_eth56g(hw, port); + if (err) + return err; + err = ice_stop_phy_timer_eth56g(hw, port, false); if (err) return err;
--
2.47.1