On 10/21/25 1:53 AM, Jakub Kicinski wrote:

On Fri, 17 Oct 2025 08:48:19 +0200 Horatiu Vultur wrote:

quoted

For VSC8574 and VSC8572, the PTP initialization is incomplete. It is
missing the first part but it makes the second part. Meaning that the
ptp_clock_register() is never called.

There is no crash without the first part when enabling PTP but this is
unexpected because some PHys have PTP functionality exposed by the
driver and some don't even though they share the same PTP clock PTP.

I'm tempted to queue this to net-next, sounds like a "never worked 
in an obvious way" case.  I'd appreciate a second opinion.. Andrew?

FTR, I agree with the above, as (out of sheer ignorance) I think/fear
the first patch can potentially cause regressions.

/P