How to synchronise all network card PHC clocks on a device – Timebeat

Default Linux config section:

 linux_specific:

        # Enable hardware timestamping on Linux SOF_TIMESTAMPING_(R|T)X_HARDWARE
        # (setting this to false will also disable steering based on PPS)
        # hardware_timestamping: true

        # Enable external software timestamping on Linux SOF_TIMESTAMPING_(R|T)X_SOFTWARE
        # external_software_timestamping: true

        # Synchronise non-master PHC (nic) clocks on Linux
        # sync_nic_slaves: false

        # Don't synchronise these clocks on Linux
        # disable_adjustment: ['system', 'ens1', 'enp2s0']

        # Fixed PHC offset strategy (default order of preference is 1st: precise, 2nd: extended,
        # 3rd: pps, 4th: basic). List of ":"
        # phc_offset_strategy: ["ens1:pps"]

        # PHC smoothing mechanism. Defaults to "minimum". Other option is "median". List of ":"
        # phc_smoothing_strategy: ["ens1:median"]

        # Enable the internal modified lucky packet PHC outlier filter
        # phc_lp_filter_enabled: false

        # Enable the internal none-Gausian PHC outlier filter
        # phc_ng_filter_enabled: false

        # Interface specific PHC samples to determine offset from system clock (default is 15: list of ":")
        # phc_samples: ["ens5f0:5"]

        # Use 1-step on the list of interfaces below if available
        # phc_one_step: ["ens5f0", "ens1"]

        # Maintain PHC clocks in TAI
        # phc_as_tai: true

To synchronise all network card phc clocks on a device use the following config:

        # Synchronise non-master PHC (nic) clocks on Linux
        sync_nic_slaves: true