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PTP/1588 using linuxptp and CPTS on EVMK2H 4.0

xin li3
Intellectual 520 points

hi,

I want to implement PTP/1588 using linuxptp and Common Platform Time Sync (CPTS) on EVMK2H 4.0 with MCSDK 3.0.4.

MCSDK UG says "It's the application's responsibility to modify the (physical) rftclk frequency.", so could you tell me about: 

(1) When using App ptp4l to test cpts/ptp, is it necessary for me to add additional code for modifying rftclk frequency? Or ptp4l takes care of it?
(2) If it is my responsibility, what code should I add and where to insert it so that ptp4l can work together with my added code? 
Thank you for any responce.