[PATCH net-next v2 0/2] dpll: Add support for phase adjustment granularity

From: Ivan Vecera

Date: Wed Oct 29 2025 - 11:32:25 EST


Phase-adjust values are currently limited only by a min-max range. Some
hardware requires, for certain pin types, that values be multiples of
a specific granularity, as in the zl3073x driver.

Patch 1: Adds 'phase-adjust-gran' pin attribute and an appropriate
handling
Patch 2: Adds a support for this attribute into zl3073x driver

Changes:
v2:
* changed type for the attribute to u32 and added explicit cast to s32 during
remainder computation (per Jiri's request)

Ivan Vecera (2):
dpll: add phase-adjust-gran pin attribute
dpll: zl3073x: Specify phase adjustment granularity for pins

Documentation/driver-api/dpll.rst | 36 +++++++++--------
Documentation/netlink/specs/dpll.yaml | 7 ++++
drivers/dpll/dpll_netlink.c | 12 +++++-
drivers/dpll/zl3073x/dpll.c | 58 +++++++--------------------
drivers/dpll/zl3073x/prop.c | 11 +++++
include/linux/dpll.h | 1 +
include/uapi/linux/dpll.h | 1 +
7 files changed, 65 insertions(+), 61 deletions(-)

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2.51.0