On Sun, Nov 01, 2020 at 10:35:01AM +0100, Christian Eggers wrote:

Hi Vladimir,

On Friday, 30 October 2020, 19:24:47 CET, Vladimir Oltean wrote:

quoted

On Thu, Oct 22, 2020 at 12:17:48PM +0200, Christian Eggers wrote:

quoted

I tried to study the effect of setting the ocmode bit on the KSZ either to
master or to slave. The main visible change is, that some PTP message
types
are be filtered out on RX:
- in "master" mode, "Sync" messages from other nodes will not be received
(but everything else like "Announce" seem to work)
- in "slave" mode, "Delay_Req" messages from other nodes will not be
received

Could you dump the contents of your REG_PTP_MSG_CONF2 register?

runtime register value is 0x1004 (matches default value from the data sheet).
The Linux driver doesn't touch this register. Below is a dump of all PTP
related (global) registers.

So the bit 5 ("Enable Dropping of Sync/Follow_Up and Delay_Req PTP
Messages") is not set. When the PTP messages are dropped, do you know
which error counter in ethtool -S is increasing?