net: ethernet: ravb: Add callback for gPTP probe

Different generations of the RAVB IP have different needs when it probes
the gPTP timer clock. Add a callback in the PTP information to allow
each generation to probe its own way.

With this the last gPTP specific flag (gptp_ref_clk) can be removed.
However the primary motivation for the change is to prepare for Gen4
support, which compared to other generations with gPTP support does not
have the clock as part of the IP itself.

Gen4 will not need to compute GTI value as it have nowhere to write it,
as the gPTP clock is external. For this reason move the computation of
it into the newly gPTP probe specific callbacks for the RAVB IP's that
support it.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sergey Shtylyov <sergei.shtylyov@gmail.com>
Link: https://patch.msgid.link/20260921175037.4084310-8-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions