X4 series Ethernet adapters provide PPS connector(s) to support a 1PPS time synchronization signal if required:
- Firmware bundle version 1.4.0.113 or later is required.
- Driver version 6.4.0.1003 or later is required.
- PPS IN requires a stable signal to operate correctly.
- You can use either PPS IN or PPS OUT, but cannot use both simultaneously.
- The default configuration is to enable PPS OUT on the pin labelled for that purpose. PPS IN is therefore disabled.
- To reconfigure the PPS pin that is used and its function (IN or OUT):
- With the AMD Solarflare Enhanced PTP daemon,
use the
pinandfunctioninstance-specific configuration options for the PPS sync module. These are available from version 3.9.0 onward. - Otherwise, use any utility that implements the standard
Linux API for PPS. An example is the
testptputility available from the following URL:https://github.com/torvalds/linux/blob/master/tools/testing/selftests/ptp/testptp.c
- With the AMD Solarflare Enhanced PTP daemon,
use the