• Grygorii Strashko's avatar
    net: ethernet: ti: introduce am654 common platform time sync driver · f6bd5952
    Grygorii Strashko authored
    The CPTS module is used to facilitate host control of time sync operations.
    Main features of CPTS module are:
    - selection of multiple external clock sources
    - control of time sync events via interrupt or polling
    - 64-bit timestamp mode in ns with HW PPM and nudge adjustment.
    - hardware timestamp ext. inputs (HWx_TS_PUSH)
    - timestamp Generator function outputs (TS_GENFx)
    Depending on integration it enables compliance with the IEEE 1588-2008
    standard for a precision clock synchronization protocol, Ethernet Enhanced
    Scheduled Traffic Operations (CPTS_ESTFn) and PCIe Subsystem Precision Time
    Measurement (PTM).
    
    Introduced driver provides Linux PTP hardware clock for each CPTS device
    and network packets timestamping where applicable. CPTS PTP hardware clock
    supports following operations:
        - Set time
        - Get time
        - Shift the clock by a given offset atomically
        - Adjust clock frequency
        - Time stamp external events
        - Periodic output signals
    Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    f6bd5952
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