path: root/Documentation/netlink/specs/dpll.yaml

# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)

name: dpll

doc: DPLL subsystem.

definitions:
  -
    type: enum
    name: mode
    doc: |
      working modes a dpll can support, differentiates if and how dpll selects
      one of its inputs to syntonize with it, valid values for DPLL_A_MODE
      attribute
    entries:
      -
        name: manual
        doc: input can be only selected by sending a request to dpll
        value: 1
      -
        name: automatic
        doc: highest prio input pin auto selected by dpll
    render-max: true
  -
    type: enum
    name: lock-status
    doc: |
      provides information of dpll device lock status, valid values for
      DPLL_A_LOCK_STATUS attribute
    entries:
      -
        name: unlocked
        doc: |
          dpll was not yet locked to any valid input (or forced by setting
          DPLL_A_MODE to DPLL_MODE_DETACHED)
        value: 1
      -
        name: locked
        doc: |
          dpll is locked to a valid signal, but no holdover available
      -
        name: locked-ho-acq
        doc: |
          dpll is locked and holdover acquired
      -
        name: holdover
        doc: |
          dpll is in holdover state - lost a valid lock or was forced
          by disconnecting all the pins (latter possible only
          when dpll lock-state was already DPLL_LOCK_STATUS_LOCKED_HO_ACQ,
          if dpll lock-state was not DPLL_LOCK_STATUS_LOCKED_HO_ACQ, the
          dpll's lock-state shall remain DPLL_LOCK_STATUS_UNLOCKED)
    render-max: true
  -
    type: enum
    name: lock-status-error
    doc: |
      if previous status change was done due to a failure, this provides
      information of dpll device lock status error.
      Valid values for DPLL_A_LOCK_STATUS_ERROR attribute
    entries:
      -
        name: none
        doc: |
          dpll device lock status was changed without any error
        value: 1
      -
        name: undefined
        doc: |
          dpll device lock status was changed due to undefined error.
          Driver fills this value up in case it is not able
          to obtain suitable exact error type.
      -
        name: media-down
        doc: |
          dpll device lock status was changed because of associated
          media got down.
          This may happen for example if dpll device was previously
          locked on an input pin of type PIN_TYPE_SYNCE_ETH_PORT.
      -
        name: fractional-frequency-offset-too-high
        doc: |
          the FFO (Fractional Frequency Offset) between the RX and TX
          symbol rate on the media got too high.
          This may happen for example if dpll device was previously
          locked on an input pin of type PIN_TYPE_SYNCE_ETH_PORT.
    render-max: true
  -
    type: const
    name: temp-divider
    value: 1000
    doc: |
      temperature divider allowing userspace to calculate the
      temperature as float with three digit decimal precision.
      Value of (DPLL_A_TEMP / DPLL_TEMP_DIVIDER) is integer part of
      temperature value.
      Value of (DPLL_A_TEMP % DPLL_TEMP_DIVIDER) is fractional part of
      temperature value.
  -
    type: enum
    name: type
    doc: type of dpll, valid values for DPLL_A_TYPE attribute
    entries:
      -
        name: pps
        doc: dpll produces Pulse-Per-Second signal
        value: 1
      -
        name: eec
        doc: dpll drives the Ethernet Equipment Clock
    render-max: true
  -
    type: enum
    name: pin-type
    doc: |
      defines possible types of a pin, valid values for DPLL_A_PIN_TYPE
      attribute
    entries:
      -
        name: mux
        doc: aggregates another layer of selectable pins
        value: 1
      -
        name: ext
        doc: external input
      -
        name: synce-eth-port
        doc: ethernet port PHY's recovered clock
      -
        name: int-oscillator
        doc: device internal oscillator
      -
        name: gnss
        doc: GNSS recovered clock
    render-max: true
  -
    type: enum
    name: pin-direction
    doc: |
      defines possible direction of a pin, valid values for
      DPLL_A_PIN_DIRECTION attribute
    entries:
      -
        name: input
        doc: pin used as a input of a signal
        value: 1
      -
        name: output
        doc: pin used to output the signal
    render-max: true
  -
    type: const
    name: pin-frequency-1-hz
    value: 1
  -
    type: const
    name: pin-frequency-10-khz
    value: 10000
  -
    type: const
    name: pin-frequency-77_5-khz
    value: 77500
  -
    type: const
    name: pin-frequency-10-mhz
    value: 10000000
  -
    type: enum
    name: pin-state
    doc: |
      defines possible states of a pin, valid values for
      DPLL_A_PIN_STATE attribute
    entries:
      -
        name: connected
        doc: pin connected, active input of phase locked loop
        value: 1
      -
        name: disconnected
        doc: pin disconnected, not considered as a valid input
      -
        name: selectable
        doc: pin enabled for automatic input selection
    render-max: true
  -
    type: flags
    name: pin-capabilities
    doc: |
      defines possible capabilities of a pin, valid flags on
      DPLL_A_PIN_CAPABILITIES attribute
    entries:
      -
        name: direction-can-change
        doc: pin direction can be changed
      -
        name: priority-can-change
        doc: pin priority can be changed
      -
        name: state-can-change
        doc: pin state can be changed
  -
    type: const
    name: phase-offset-divider
    value: 1000
    doc: |
      phase offset divider allows userspace to calculate a value of
      measured signal phase difference between a pin and dpll device
      as a fractional value with three digit decimal precision.
      Value of (DPLL_A_PHASE_OFFSET / DPLL_PHASE_OFFSET_DIVIDER) is an
      integer part of a measured phase offset value.
      Value of (DPLL_A_PHASE_OFFSET % DPLL_PHASE_OFFSET_DIVIDER) is a
      fractional part of a measured phase offset value.

attribute-sets:
  -
    name: dpll
    enum-name: dpll_a
    attributes:
      -
        name: id
        type: u32
      -
        name: module-name
        type: string
      -
        name: pad
        type: pad
      -
        name: clock-id
        type: u64
      -
        name: mode
        type: u32
        enum: mode
      -
        name: mode-supported
        type: u32
        enum: mode
        multi-attr: true
      -
        name: lock-status
        type: u32
        enum: lock-status
      -
        name: temp
        type: s32
      -
        name: type
        type: u32
        enum: type
      -
        name: lock-status-error
        type: u32
        enum: lock-status-error
  -
    name: pin
    enum-name: dpll_a_pin
    attributes:
      -
        name: id
        type: u32
      -
        name: parent-id
        type: u32
      -
        name: module-name
        type: string
      -
        name: pad
        type: pad
      -
        name: clock-id
        type: u64
      -
        name: board-label
        type: string
      -
        name: panel-label
        type: string
      -
        name: package-label
        type: string
      -
        name: type
        type: u32
        enum: pin-type
      -
        name: direction
        type: u32
        enum: pin-direction
      -
        name: frequency
        type: u64
      -
        name: frequency-supported
        type: nest
        multi-attr: true
        nested-attributes: frequency-range
      -
        name: frequency-min
        type: u64
      -
        name: frequency-max
        type: u64
      -
        name: prio
        type: u32
      -
        name: state
        type: u32
        enum: pin-state
      -
        name: capabilities
        type: u32
        enum: pin-capabilities
      -
        name: parent-device
        type: nest
        multi-attr: true
        nested-attributes: pin-parent-device
      -
        name: parent-pin
        type: nest
        multi-attr: true
        nested-attributes: pin-parent-pin
      -
        name: phase-adjust-min
        type: s32
      -
        name: phase-adjust-max
        type: s32
      -
        name: phase-adjust
        type: s32
      -
        name: phase-offset
        type: s64
      -
        name: fractional-frequency-offset
        type: sint
        doc: |
          The FFO (Fractional Frequency Offset) between the RX and TX
          symbol rate on the media associated with the pin:
          (rx_frequency-tx_frequency)/rx_frequency
          Value is in PPM (parts per million).
          This may be implemented for example for pin of type
          PIN_TYPE_SYNCE_ETH_PORT.
  -
    name: pin-parent-device
    subset-of: pin
    attributes:
      -
        name: parent-id
      -
        name: direction
      -
        name: prio
      -
        name: state
      -
        name: phase-offset
  -
    name: pin-parent-pin
    subset-of: pin
    attributes:
      -
        name: parent-id
      -
        name: state
  -
    name: frequency-range
    subset-of: pin
    attributes:
      -
        name: frequency-min
      -
        name: frequency-max

operations:
  enum-name: dpll_cmd
  list:
    -
      name: device-id-get
      doc: |
        Get id of dpll device that matches given attributes
      attribute-set: dpll
      flags: [ admin-perm ]

      do:
        pre: dpll-lock-doit
        post: dpll-unlock-doit
        request:
          attributes:
            - module-name
            - clock-id
            - type
        reply:
          attributes:
            - id

    -
      name: device-get
      doc: |
        Get list of DPLL devices (dump) or attributes of a single dpll device
      attribute-set: dpll
      flags: [ admin-perm ]

      do:
        pre: dpll-pre-doit
        post: dpll-post-doit
        request:
          attributes:
            - id
        reply: &dev-attrs
          attributes:
            - id
            - module-name
            - mode
            - mode-supported
            - lock-status
            - lock-status-error
            - temp
            - clock-id
            - type

      dump:
        reply: *dev-attrs

    -
      name: device-set
      doc: Set attributes for a DPLL device
      attribute-set: dpll
      flags: [ admin-perm ]

      do:
        pre: dpll-pre-doit
        post: dpll-post-doit
        request:
          attributes:
            - id
    -
      name: device-create-ntf
      doc: Notification about device appearing
      notify: device-get
      mcgrp: monitor
    -
      name: device-delete-ntf
      doc: Notification about device disappearing
      notify: device-get
      mcgrp: monitor
    -
      name: device-change-ntf
      doc: Notification about device configuration being changed
      notify: device-get
      mcgrp: monitor
    -
      name: pin-id-get
      doc: |
        Get id of a pin that matches given attributes
      attribute-set: pin
      flags: [ admin-perm ]

      do:
        pre: dpll-lock-doit
        post: dpll-unlock-doit
        request:
          attributes:
            - module-name
            - clock-id
            - board-label
            - panel-label
            - package-label
            - type
        reply:
          attributes:
            - id

    -
      name: pin-get
      doc: |
        Get list of pins and its attributes.

        - dump request without any attributes given - list all the pins in the
          system
        - dump request with target dpll - list all the pins registered with
          a given dpll device
        - do request with target dpll and target pin - single pin attributes
      attribute-set: pin
      flags: [ admin-perm ]

      do:
        pre: dpll-pin-pre-doit
        post: dpll-pin-post-doit
        request:
          attributes:
            - id
        reply: &pin-attrs
          attributes:
            - id
            - board-label
            - panel-label
            - package-label
            - type
            - frequency
            - frequency-supported
            - capabilities
            - parent-device
            - parent-pin
            - phase-adjust-min
            - phase-adjust-max
            - phase-adjust
            - fractional-frequency-offset

      dump:
        request:
          attributes:
            - id
        reply: *pin-attrs

    -
      name: pin-set
      doc: Set attributes of a target pin
      attribute-set: pin
      flags: [ admin-perm ]

      do:
        pre: dpll-pin-pre-doit
        post: dpll-pin-post-doit
        request:
          attributes:
            - id
            - frequency
            - direction
            - prio
            - state
            - parent-device
            - parent-pin
            - phase-adjust
    -
      name: pin-create-ntf
      doc: Notification about pin appearing
      notify: pin-get
      mcgrp: monitor
    -
      name: pin-delete-ntf
      doc: Notification about pin disappearing
      notify: pin-get
      mcgrp: monitor
    -
      name: pin-change-ntf
      doc: Notification about pin configuration being changed
      notify: pin-get
      mcgrp: monitor

mcast-groups:
  list:
    -
      name: monitor