[PATCH 6.12.y-cip 04/38] dt-bindings: serial: renesas,rsci: Document RZ/N2H support

Lad Prabhakar
2025-12-05T14:33:11Z

commit 7dfd023dc7a9050554b28a16a31b8b06f76bb862 upstream.

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>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
.../devicetree/bindings/serial/renesas,rsci.yaml | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/renesas,rsci.yaml b/Documentation/devicetree/bindings/serial/renesas,rsci.yaml
index 548225e509e51..f50d8e02f4764 100644
--- 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
--
2.43.0