Thread (7 messages) 7 messages, 3 authors, 2026-03-24
STALE120d

[PATCH net v2 1/1] net: fec: fix the PTP periodic output sysfs interface

From: Buday Csaba <hidden>
Date: 2026-03-19 15:59:45
Also in: imx, lkml
Subsystem: freescale imx / mxc fec driver, networking drivers, the rest · Maintainers: Wei Fang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

When the PPS channel configuration was implemented, the number of
supported periodic outputs (`n_per_out`) was left at 1.

This prohibits using channels 1..3 from the sysfs interface, since
period_store() rejects channel numbers greater than `n_per_out`.

Fix by increasing `n_per_out` to the number of channels supported
by the hardware.

Fixes: 566c2d83887f ("net: fec: make PPS channel configurable")
Signed-off-by: Buday Csaba <redacted>
---
 drivers/net/ethernet/freescale/fec_ptp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index 4b7bad9a485d..1a7aa280e7f6 100644
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -756,7 +756,7 @@ void fec_ptp_init(struct platform_device *pdev, int irq_idx)
 	fep->ptp_caps.max_adj = 250000000;
 	fep->ptp_caps.n_alarm = 0;
 	fep->ptp_caps.n_ext_ts = 0;
-	fep->ptp_caps.n_per_out = 1;
+	fep->ptp_caps.n_per_out = 4;
 	fep->ptp_caps.n_pins = 0;
 	fep->ptp_caps.pps = 1;
 	fep->ptp_caps.adjfine = fec_ptp_adjfine;
base-commit: 8a63baadf08453f66eb582fdb6dd234f72024723
-- 
2.39.5

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