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Merge branch 'dpll-add-nco-pin-type-and-zl3073x-support'

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Ivan Vecera says:

====================
dpll: add NCO pin type and zl3073x support

Add a new DPLL_PIN_TYPE_INT_NCO pin type for virtual pins representing
the NCO mode of a DPLL and implement support for it in the zl3073x driver.

Patch 1 adds a STATE_CONNECTED_OVERRIDE pin capability for pins that
can override input selection in any DPLL mode, with a WARN_ON check
in dpll_pin_register() that STATE_CAN_CHANGE is also set.

Patch 2 adds the new INT_NCO pin type to the DPLL netlink spec and
UAPI header.

Patch 3 replaces the single 2s poll timeout with per-operation timeouts
based on Microchip proprietary source code and own measurement.

Patch 4 adds a per-DPLL serialization mutex taken by all DPLL callbacks
and the periodic worker, establishing a single lock that protects all
per-channel state. The chan_state_update() call is moved under this lock.

Patch 5 adds a virtual NCO input pin to the zl3073x driver that allows
userspace to switch a DPLL channel into NCO mode. The pin reports
connected/active state when the channel is in NCO mode and handles
the hardware-specific details of mode transitions including automatic
df_offset capture and 1PPS phase preservation.

Link: https://lore.kernel.org/netdev/20260531194423.383366-1-ivecera@redhat.com/
====================

Link: https://patch.msgid.link/20260630125536.720717-1-ivecera@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni 2026-07-06 14:45:06 +02:00
commit 474cff6868
12 changed files with 677 additions and 105 deletions
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