Re: [PATCH net-next 0/2] dpll: add NCO pin type and zl3073x support

From: Ivan Vecera

Date: Fri May 15 2026 - 16:56:38 EST




On 5/13/26 4:56 PM, Ivan Vecera wrote:
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 the new pin type to the DPLL netlink spec and UAPI header.

Patch 2 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.

Ivan Vecera (2):
dpll: add DPLL_PIN_TYPE_INT_NCO pin type
dpll: zl3073x: add NCO virtual input pin

Documentation/netlink/specs/dpll.yaml | 12 ++
drivers/dpll/dpll_nl.c | 2 +-
drivers/dpll/zl3073x/chan.c | 14 +-
drivers/dpll/zl3073x/chan.h | 24 +++
drivers/dpll/zl3073x/core.c | 7 +
drivers/dpll/zl3073x/dpll.c | 259 ++++++++++++++++++++++----
drivers/dpll/zl3073x/dpll.h | 2 +
drivers/dpll/zl3073x/regs.h | 7 +
include/uapi/linux/dpll.h | 4 +
9 files changed, 291 insertions(+), 40 deletions(-)

Sashiko found some issues... will address them in v2.

Ivan