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Ivan Vecera says: ==================== dpll: add frequency monitoring feature This series adds support for monitoring the measured input frequency of DPLL input pins via the DPLL netlink interface. Some DPLL devices can measure the actual frequency being received on input pins. The approach mirrors the existing phase-offset-monitor feature: a device-level attribute (DPLL_A_FREQUENCY_MONITOR) enables or disables monitoring, and a per-pin attribute (DPLL_A_PIN_MEASURED_FREQUENCY) exposes the measured frequency in millihertz (mHz) when monitoring is enabled. Patch 1 adds the new attributes to the DPLL netlink spec (dpll.yaml), the DPLL_PIN_MEASURED_FREQUENCY_DIVIDER constant, regenerates the auto-generated UAPI header and netlink policy, and updates Documentation/driver-api/dpll.rst. Patch 2 adds the callback operations (freq_monitor_get/set for devices, measured_freq_get for pins) and the corresponding netlink GET/SET handlers in the DPLL core. The core only invokes measured_freq_get when the frequency monitor is enabled on the parent device. The freq_monitor_get callback is required when measured_freq_get is provided. Patch 3 implements the feature in the ZL3073x driver by extracting a common measurement latch helper from the existing FFO update path, adding a frequency measurement function, and wiring up the new callbacks. ==================== Link: https://patch.msgid.link/20260402184057.1890514-1-ivecera@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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