dt-bindings: serial: renesas,rsci: Document RZ/N2H support

Add documentation for the serial communication interface (RSCI) found on
the Renesas RZ/N2H (R9A09G087) SoC. The RSCI IP on this SoC is identical
to that on the RZ/T2H (R9A09G077) SoC. Therefore, "renesas,r9a09g077-rsci"
is used as a fallback compatible string for RZ/N2H.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250609192344.293317-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/serial/renesas,rsci.yaml b/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
index ea879db5f48502a2251855ccd6ea21182362c67c..4aacc44bb50989df97a3184d4e9f875134499ad6 100644 (file)
--- a/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
@@ -15,7 +15,13 @@ allOf:
 
 properties:
   compatible:
-    const: renesas,r9a09g077-rsci      # RZ/T2H
+    oneOf:
+      - items:
+          - const: renesas,r9a09g087-rsci # RZ/N2H
+          - const: renesas,r9a09g077-rsci # RZ/T2H
+
+      - items:
+          - const: renesas,r9a09g077-rsci # RZ/T2H
 
   reg:
     maxItems: 1