QUESTION: Can linuxptp set/adjust for multiple ptp clocks in a switch?
HARDWARE: Switch with 3 Marvell chips interconnected, each exposes a /dev/ptpN
and 8 Ethernet ports.
SOFTWARE: Linuxptp 1.92 (going to 2.0) (Thanks to Richard and others!) with
gPTP.cfg and boundary_clock_jbod=1.
ISSUES: The three ptpN are not sync-ed, with Grandmaster of itself or an
external device. Tried to use "phc2sys -a" but it waits for ptp4l forever.
Then, brute-force:
"phc2sys -c /dev/ptp3 -s /dev/ptp1 -O 0 &"
"phc2sys -c /dev/ptp2 -s /dev/ptp1 -O 0 &"
where ptp1 is sync-ed by linuxptp and has the Grandmaster connected. This made
AVB audio working.
Advises are appreciated!
Liyong
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