linux-kernel - [PATCH] dt-bindings: serial: renesas,rsci: Document RZ/N2H support

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Message-ID: <20250609192344.293317-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Mon,  9 Jun 2025 20:23:44 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] dt-bindings: serial: renesas,rsci: Document RZ/N2H support

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

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@...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 1bf255407df0..f20de85d5304 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
-- 
2.49.0