On Wed, Nov 04, 2020 at 03:35:19PM +0800, yvonne_cyh wrote:
> Using ptp4l L2 transport we can sync to external network clock by rj45, but 
> it seems we can not get sync by eth0, the cpu port.

Correct.

> Is there any patch for this to work?

I'm sorry, but that is impossible.

> We could like to get pps  supported by eth0, since dsa driver of marvel 
> switch we are using does not support pps.

Then you need to allocate a second MAC to act as the DSA management
port.  The management port cannot participate in the PTP.

Sorry,
Richard


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