This is a note to let you know that I've just added the patch titled
ice: Fix ETH56G FC-FEC Rx offset value
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ice-fix-eth56g-fc-fec-rx-offset-value.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3b4066672e0b53c25af72680e200f8f4964ce868
Author: Karol Kolacinski <karol.kolacinski@xxxxxxxxx>
Date: Tue Nov 5 13:29:15 2024 +0100
ice: Fix ETH56G FC-FEC Rx offset value
[ Upstream commit 2e60560f1ec9b722f9c6699ec5d966f1732d14dd ]
Fix ETH56G FC-FEC incorrect Rx offset value by changing it from -255.96
to -469.26 ns.
Those values are derived from HW spec and reflect internal delays.
Hex value is a fixed point representation in Q23.9 format.
Fixes: 7cab44f1c35f ("ice: Introduce ETH56G PHY model for E825C products")
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx>
Signed-off-by: Karol Kolacinski <karol.kolacinski@xxxxxxxxx>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@xxxxxxxxx> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_consts.h b/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
index 3005dd252a102..bdb1020147d1c 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
@@ -131,7 +131,7 @@ struct ice_eth56g_mac_reg_cfg eth56g_mac_cfg[NUM_ICE_ETH56G_LNK_SPD] = {
.rx_offset = {
.serdes = 0xffffeb27, /* -10.42424 */
.no_fec = 0xffffcccd, /* -25.6 */
- .fc = 0xfffe0014, /* -255.96 */
+ .fc = 0xfffc557b, /* -469.26 */
.sfd = 0x4a4, /* 2.32 */
.bs_ds = 0x32 /* 0.0969697 */
}
