[PATCH net v2 0/3] net: freescale: fix PTP_EXTTS_REQUEST2 for QorIQ 1588

[Vincent Jardin via B4 Relay]

Since commit 7c571ac57d9d ("net: ptp: introduce .supported_extts_flags
to ptp_clock_info"), the PTP core rejects every PTP_EXTTS_REQUEST2
request for a driver that does not set .supported_extts_flags. The three
users of the QorIQ 1588 timer (dpaa2-ptp, enetc, ptp_qoriq) do not set
it, so linuxptp ts2phc cannot arm their external timestamp inputs.

The timer timestamps the rising edge only, since ptp_qoriq_init() clears
ETEP1 and ETEP2. Each patch declares PTP_RISING_EDGE | PTP_STRICT_FLAGS
for one driver.

With PTP_STRICT_FLAGS declared, the core checks the edge flags of the
legacy PTP_EXTTS_REQUEST ioctl too: a legacy request for the falling
edge, or for both edges, now fails with -EOPNOTSUPP instead of being
timestamped on the rising edge. Each commit message says so.

Patch 1 fixes the failure seen on an LX2160A board.
Patches 2 and 3 are build-tested/code review only.

Signed-off-by: Vincent Jardin <vjardin@xxxxxxx>
---
Changes in v2:
- add comments about PTP_EXTTS_REQUEST (Sashiko)
- Name other users of ptp_qoriq_init() in each commit message (Sashiko)
- Add Reviewed-by tags of Jacob and Kory, the code is unchanged, only
  commit log improvements.
- Link to v1: https://lore.kernel.org/r/20261006-for-upstream-qoriq-ptp-extts-flags-v1-0-b4a161b92832@xxxxxxx

---
Vincent Jardin (3):
      dpaa2-ptp: fix support for PTP_EXTTS_REQUEST2 ioctl
      net: enetc: fix support for PTP_EXTTS_REQUEST2 ioctl
      ptp: qoriq: fix support for PTP_EXTTS_REQUEST2 ioctl

 drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c | 1 +
 drivers/net/ethernet/freescale/enetc/enetc_ptp.c | 1 +
 drivers/ptp/ptp_qoriq.c                          | 1 +
 3 files changed, 3 insertions(+)
---
base-commit: d5a007b9b457c915ab1a53227e8939e4018aa97a
change-id: 20261006-for-upstream-qoriq-ptp-extts-flags-1c6fd731d66f

Best regards,
-- 
Vincent Jardin <vjardin@xxxxxxx>