diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
index 4497e3c0456d..ac2b873dcf8e 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
@@ -78,6 +78,7 @@ static const struct ptp_clock_info dpaa2_ptp_caps = {
 	.n_per_out	= 3,
 	.n_pins		= 0,
 	.pps		= 1,
+	.supported_extts_flags = PTP_RISING_EDGE | PTP_STRICT_FLAGS,
 	.adjfine	= ptp_qoriq_adjfine,
 	.adjtime	= ptp_qoriq_adjtime,
 	.gettime64	= ptp_qoriq_gettime,