[PATCH net-next v4 4/5] dt-bindings: net: dsa: add EDSA arrival-timestamp tag protocol

[Luke Howard]

Add edsa-ptp-reserved2-ts to the dsa-tag-protocol enum. This
EDSA-derived protocol lets a board select in-frame embedding of the PTP
arrival timestamp, which the switch writes over the reserved2 field of
the PTP common header, on switches that support it. Giving it its own
identifier keeps the wire format discoverable via dsa/tagging.

Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Luke Howard <lukeh@xxxxxxxx>
---
 Documentation/devicetree/bindings/net/dsa/dsa-port.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml b/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
index 4801204699534..8d12c8f1bd51e 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/dsa-port.yaml
@@ -53,6 +53,7 @@ properties:
     enum:
       - dsa
       - edsa
+      - edsa-ptp-reserved2-ts
       - ocelot
       - ocelot-8021q
       - rtl8_4

-- 
2.43.0