This commit adds functionality to increase the sync and pdelay request
intervals once gptp synchronization has been achieved. This is useful
while running Automotive Profile where the network is usually static.
Here, we are assuming that the gPTP synchronization is achieved whenever
the last 'n' offsets calculated using the Sync messages are below a
certain threshold. Both, the number of offsets to consider and the offset
threshold are configurable.
In order to support the interval update, a new clock servo state
CLOCK_SERVO_STABLE has been added. The clock will transition to this
state whenever the above condition is satisfied. When this transition
occurs, the slave will send an "interval request" signaling message
asking the master to change the sync interval. It will also update the
pdelay request interval locally.
Four new config options have been added to provide this functionality:
- servo_offset_threshold: All the offset values being considered should
be below this value.
- servo_num_offset_values: number of previously received offset values
to consider.
- operLogSyncInterval: slave will ask the master to switch to this
interval for sending sync messages when the offset stabilizes.
- operLogPdelayReqInterval: the slave will set this interval for pdelay
request messages when the offset stabilizes.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
This commit adds example for configuring master and slave devices that
support features from the Automotive Profile.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
Vedang Patel