| From: |
| Ivan Vecera <ivecera-AT-redhat.com> |
| To: |
| netdev-AT-vger.kernel.org |
| Subject: |
| [PATCH net-next v2 0/5] dpll: zl3073x: add ref-sync pair support |
| Date: |
| Sat, 28 Mar 2026 09:06:19 +0100 |
| Message-ID: |
| <20260328080624.593916-1-ivecera@redhat.com> |
| Cc: |
| Arkadiusz Kubalewski <arkadiusz.kubalewski-AT-intel.com>, Jiri Pirko <jiri-AT-resnulli.us>, Michal Schmidt <mschmidt-AT-redhat.com>, Petr Oros <poros-AT-redhat.com>, Prathosh Satish <Prathosh.Satish-AT-microchip.com>, Simon Horman <horms-AT-kernel.org>, Vadim Fedorenko <vadim.fedorenko-AT-linux.dev>, linux-kernel-AT-vger.kernel.org, Conor Dooley <conor+dt-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Rob Herring <robh-AT-kernel.org>, devicetree-AT-vger.kernel.org, Pasi Vaananen <pvaanane-AT-redhat.com> |
| Archive-link: |
| Article |
This series adds Reference-Sync pair support to the ZL3073x DPLL driver.
A Ref-Sync pair consists of a clock reference and a low-frequency sync
signal (e.g. 1 PPS) where the DPLL locks to the clock reference but
phase-aligns to the sync reference.
Patches 1-3 are preparatory cleanups and helper additions:
- Clean up esync get/set callbacks with early returns and use the
zl3073x_out_is_ndiv() helper
- Convert open-coded clear-and-set bitfield patterns to FIELD_MODIFY()
- Add ref sync control and output clock type accessor helpers
Patch 4 adds the 'ref-sync-sources' phandle-array property to the
dpll-pin device tree binding schema and updates the ZL3073x binding
examples.
Patch 5 implements the driver support:
- ref_sync_get/set callbacks with frequency validation
- Automatic sync source exclusion from reference selection
- Device tree based ref-sync pair registration
Tested and verified on Microchip EDS2 (pcb8385) development board.
Changes:
v2 - added proper reviewed-by tags (requested by Kuba)
Ivan Vecera (5):
dpll: zl3073x: clean up esync get/set and use zl3073x_out_is_ndiv()
dpll: zl3073x: use FIELD_MODIFY() for clear-and-set patterns
dpll: zl3073x: add ref sync and output clock type helpers
dt-bindings: dpll: add ref-sync-sources property
dpll: zl3073x: add ref-sync pair support
.../devicetree/bindings/dpll/dpll-pin.yaml | 11 +
.../bindings/dpll/microchip,zl30731.yaml | 30 +-
drivers/dpll/zl3073x/chan.h | 17 +-
drivers/dpll/zl3073x/core.c | 3 +-
drivers/dpll/zl3073x/dpll.c | 295 ++++++++++++++----
drivers/dpll/zl3073x/flash.c | 3 +-
drivers/dpll/zl3073x/out.h | 22 ++
drivers/dpll/zl3073x/ref.h | 46 +++
drivers/dpll/zl3073x/regs.h | 2 +
9 files changed, 348 insertions(+), 81 deletions(-)
--
2.52.0
