[PATCH net-next v5 7/9] net: dsa: microchip: Explicitly enable detection of L2 PTP frames

From: Bastien Curutchet (Schneider Electric)

Date: Thu Feb 26 2026 - 12:07:54 EST


Detection of L2 PTP frames needs to be enabled for PTP to work at the L2
layer. The bit enabling this detection is set by default on the switches
currently supported by the driver, but it is unset by default on the
KSZ8463 for which support will be added in upcoming patches.

Explicitly enable the detection of L2 PTP frames for all switches when
PTP is enabled.

Signed-off-by: Bastien Curutchet (Schneider Electric) <bastien.curutchet@xxxxxxxxxxx>
---
drivers/net/dsa/microchip/ksz_ptp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz_ptp.c b/drivers/net/dsa/microchip/ksz_ptp.c
index 5daadf62689e6d60ab32e7a5a6c1f3fac3024b87..7eb033157f226b1169bc184d71569328e9a20a5b 100644
--- a/drivers/net/dsa/microchip/ksz_ptp.c
+++ b/drivers/net/dsa/microchip/ksz_ptp.c
@@ -947,8 +947,8 @@ int ksz_ptp_clock_register(struct dsa_switch *ds)
/* Currently only P2P mode is supported. When 802_1AS bit is set, it
* forwards all PTP packets to host port and none to other ports.
*/
- ret = ksz_rmw16(dev, regs[PTP_MSG_CONF1], PTP_TC_P2P | PTP_802_1AS,
- PTP_TC_P2P | PTP_802_1AS);
+ ret = ksz_rmw16(dev, regs[PTP_MSG_CONF1], PTP_TC_P2P | PTP_802_1AS | PTP_ETH_ENABLE,
+ PTP_TC_P2P | PTP_802_1AS | PTP_ETH_ENABLE);
if (ret)
return ret;


--
2.53.0