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Miller" , Donald Hunter , Eric Dumazet , Jakub Kicinski , Jiri Pirko , Michal Schmidt , Paolo Abeni , Pasi Vaananen , Petr Oros , Prathosh Satish , Simon Horman , Vadim Fedorenko , linux-kernel@vger.kernel.org Subject: [PATCH net-next v4 0/4] dpll: add NCO pin type and zl3073x support Date: Wed, 27 May 2026 18:12:37 +0200 Message-ID: <20260527161241.86655-1-ivecera@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.6 on 10.30.177.95 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 replaces the single 2s poll timeout with per-operation timeouts based on Microchip proprietary source code and own measurement. Patch 3 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 4 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. Changes: v4: - New patch 2: per-operation poll timeouts - New patch 3: per-DPLL serialization lock - See individual patches for detailed changelogs. v3: - fixed SoB position v2: - See individual patches for detailed changelogs. Ivan Vecera (4): dpll: add DPLL_PIN_TYPE_INT_NCO pin type dpll: zl3073x: use per-operation poll timeouts dpll: zl3073x: add per-DPLL serialization lock dpll: zl3073x: add NCO virtual input pin Documentation/netlink/specs/dpll.yaml | 13 + drivers/dpll/dpll_nl.c | 2 +- drivers/dpll/zl3073x/chan.c | 102 +++++- drivers/dpll/zl3073x/chan.h | 48 +++ drivers/dpll/zl3073x/core.c | 47 ++- drivers/dpll/zl3073x/core.h | 10 +- drivers/dpll/zl3073x/dpll.c | 495 ++++++++++++++++++++++---- drivers/dpll/zl3073x/dpll.h | 4 + drivers/dpll/zl3073x/regs.h | 9 + include/uapi/linux/dpll.h | 4 + 10 files changed, 628 insertions(+), 106 deletions(-) base-commit: aa064a614efcfa4c300609d1f01134e99a12ad10 -- 2.53.0