Family dpll netlink specification¶
Summary¶
DPLL subsystem.
Operations¶
device-id-get¶
Get id of dpll device that matches given attributes
- attribute-set:
- flags:
[
admin-perm]- do:
- pre
dpll-lock-doit
- post
dpll-unlock-doit
- request
- attributes:
[
module-name,clock-id,type]
- reply
- attributes:
[
id]
device-get¶
Get list of DPLL devices (dump) or attributes of a single dpll device
- attribute-set:
- flags:
[
admin-perm]- do:
- pre
dpll-pre-doit
- post
dpll-post-doit
- request
- attributes:
[
id]
- reply
- attributes:
[
id,module-name,mode,mode-supported,lock-status,lock-status-error,temp,clock-id,type]
- dump:
- reply
- attributes:
[
id,module-name,mode,mode-supported,lock-status,lock-status-error,temp,clock-id,type]
device-set¶
Set attributes for a DPLL device
- attribute-set:
- flags:
[
admin-perm]- do:
- pre
dpll-pre-doit
- post
dpll-post-doit
- request
- attributes:
[
id]
device-create-ntf¶
Notification about device appearing
- notify:
device-get
- mcgrp:
monitor
device-delete-ntf¶
Notification about device disappearing
- notify:
device-get
- mcgrp:
monitor
device-change-ntf¶
Notification about device configuration being changed
- notify:
device-get
- mcgrp:
monitor
pin-id-get¶
Get id of a pin that matches given attributes
- attribute-set:
- 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]
pin-get¶
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:
- flags:
[
admin-perm]- do:
- pre
dpll-pin-pre-doit
- post
dpll-pin-post-doit
- request
- attributes:
[
id]
- reply
- 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,esync-frequency,esync-frequency-supported,esync-pulse]
- dump:
- request
- attributes:
[
id]
- reply
- 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,esync-frequency,esync-frequency-supported,esync-pulse]
pin-set¶
Set attributes of a target pin
- attribute-set:
- 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,esync-frequency]
pin-create-ntf¶
Notification about pin appearing
- notify:
pin-get
- mcgrp:
monitor
pin-delete-ntf¶
Notification about pin disappearing
- notify:
pin-get
- mcgrp:
monitor
pin-change-ntf¶
Notification about pin configuration being changed
- notify:
pin-get
- mcgrp:
monitor
Multicast groups¶
monitor
Definitions¶
mode¶
- type:
enum
- 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:
- manual:
input can be only selected by sending a request to dpll
- automatic:
highest prio input pin auto selected by dpll
lock-status¶
- type:
enum
- doc:
provides information of dpll device lock status, valid values for DPLL_A_LOCK_STATUS attribute
- entries:
- unlocked:
dpll was not yet locked to any valid input (or forced by setting DPLL_A_MODE to DPLL_MODE_DETACHED)
- locked:
dpll is locked to a valid signal, but no holdover available
- locked-ho-acq:
dpll is locked and holdover acquired
- holdover:
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)
lock-status-error¶
- type:
enum
- 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:
- none:
dpll device lock status was changed without any error
- undefined:
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.
- media-down:
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.
- fractional-frequency-offset-too-high:
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.
clock-quality-level¶
- type:
enum
- doc:
level of quality of a clock device. This mainly applies when the dpll lock-status is DPLL_LOCK_STATUS_HOLDOVER. The current list is defined according to the table 11-7 contained in ITU-T G.8264/Y.1364 document. One may extend this list freely by other ITU-T defined clock qualities, or different ones defined by another standardization body (for those, please use different prefix).
- entries:
- itu-opt1-prc:
- itu-opt1-ssu-a:
- itu-opt1-ssu-b:
- itu-opt1-eec1:
- itu-opt1-prtc:
- itu-opt1-eprtc:
- itu-opt1-eeec:
- itu-opt1-eprc:
temp-divider¶
- type:
const
- 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¶
- type:
enum
- doc:
type of dpll, valid values for DPLL_A_TYPE attribute
- entries:
- pps:
dpll produces Pulse-Per-Second signal
- eec:
dpll drives the Ethernet Equipment Clock
pin-type¶
- type:
enum
- doc:
defines possible types of a pin, valid values for DPLL_A_PIN_TYPE attribute
- entries:
- mux:
aggregates another layer of selectable pins
- ext:
external input
- synce-eth-port:
ethernet port PHY’s recovered clock
- int-oscillator:
device internal oscillator
- gnss:
GNSS recovered clock
pin-direction¶
- type:
enum
- doc:
defines possible direction of a pin, valid values for DPLL_A_PIN_DIRECTION attribute
- entries:
- input:
pin used as a input of a signal
- output:
pin used to output the signal
pin-frequency-1-hz¶
- type:
const
- value:
1
pin-frequency-10-khz¶
- type:
const
- value:
10000
pin-frequency-77_5-khz¶
- type:
const
- value:
77500
pin-frequency-10-mhz¶
- type:
const
- value:
10000000
pin-state¶
- type:
enum
- doc:
defines possible states of a pin, valid values for DPLL_A_PIN_STATE attribute
- entries:
- connected:
pin connected, active input of phase locked loop
- disconnected:
pin disconnected, not considered as a valid input
- selectable:
pin enabled for automatic input selection
pin-capabilities¶
- type:
flags
- doc:
defines possible capabilities of a pin, valid flags on DPLL_A_PIN_CAPABILITIES attribute
- entries:
- direction-can-change:
pin direction can be changed
- priority-can-change:
pin priority can be changed
- state-can-change:
pin state can be changed
phase-offset-divider¶
- type:
const
- 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¶
dpll¶
id (u32)¶
module-name (string)¶
pad (pad)¶
clock-id (u64)¶
mode (u32)¶
- enum:
mode-supported (u32)¶
- enum:
- multi-attr:
True
lock-status (u32)¶
- enum:
temp (s32)¶
type (u32)¶
- enum:
lock-status-error (u32)¶
- enum:
clock-quality-level (u32)¶
- enum:
- multi-attr:
True
- doc:
Level of quality of a clock device. This mainly applies when the dpll lock-status is DPLL_LOCK_STATUS_HOLDOVER. This could be put to message multiple times to indicate possible parallel quality levels (e.g. one specified by ITU option 1 and another one specified by option 2).
pin¶
id (u32)¶
parent-id (u32)¶
module-name (string)¶
pad (pad)¶
clock-id (u64)¶
board-label (string)¶
panel-label (string)¶
package-label (string)¶
type (u32)¶
- enum:
direction (u32)¶
- enum:
frequency (u64)¶
frequency-supported (nest)¶
- multi-attr:
True
- nested-attributes:
frequency-min (u64)¶
frequency-max (u64)¶
prio (u32)¶
state (u32)¶
- enum:
capabilities (u32)¶
- enum:
parent-device (nest)¶
- multi-attr:
True
- nested-attributes:
parent-pin (nest)¶
- multi-attr:
True
- nested-attributes:
phase-adjust-min (s32)¶
phase-adjust-max (s32)¶
phase-adjust (s32)¶
phase-offset (s64)¶
fractional-frequency-offset (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.
esync-frequency (u64)¶
- doc:
Frequency of Embedded SYNC signal. If provided, the pin is configured with a SYNC signal embedded into its base clock frequency.
esync-frequency-supported (nest)¶
- multi-attr:
True
- nested-attributes:
- doc:
If provided a pin is capable of embedding a SYNC signal (within given range) into its base frequency signal.
esync-pulse (u32)¶
- doc:
A ratio of high to low state of a SYNC signal pulse embedded into base clock frequency. Value is in percents.