net: ethernet: ravb: Add gPTP support for Gen4

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While driver advertises gPTP support on Gen4 platforms it is in fact
completely broken. On R-Car Gen4 devices the RAVB module have no
internal gPTP clock as generations before it. Instead it utilizes a
system-wide gPTP clock.

This change utilizes the refactoring of the RAVB gPTP code to add
support for a system-wide clock and stops the Gen4 devices trying to use
the non-existing internal gPTP clock.

To remain backward compatible the ptp-timer property is optional.If not
present, or not enabled, the RAVB driver will no longer advertise gPTP
support to user-space.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sergey Shtylyov <sergei.shtylyov@gmail.com>
Link: https://patch.msgid.link/20260921175037.4084310-11-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Niklas Söderlund 2026-09-21 19:50:37 +02:00 • committed by Jakub Kicinski

parent ef488a9da6

commit 2b240cfc6d

2 changed files with 56 additions and 1 deletions

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3

drivers/net/ethernet/renesas/ravb.h

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54

drivers/net/ethernet/renesas/ravb_main.c

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