linux-kernel - [PATCH v2 1/2] dt-bindings: interrupt-controller: renesas,rzv2h-icu: Document RZ/V2N SoC

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Message-ID: <20251127162447.320971-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Thu, 27 Nov 2025 16:24:46 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	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>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>
Cc: linux-kernel@...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>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v2 1/2] dt-bindings: interrupt-controller: renesas,rzv2h-icu: Document RZ/V2N SoC

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

Document the Interrupt Control Unit (ICU) used on the Renesas RZ/V2N SoC.
Although the ICU closely matches the design found on the RZ/V2H(P) family,
it differs in its register layout, particularly in the reduced set of
ECCRAM related registers. These variations require a distinct compatible
string so that software can correctly match and handle the RZ/V2N
implementation.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v1->v2:
- Dropped using RZ/V2H compatible as a fallback.
---
 .../bindings/interrupt-controller/renesas,rzv2h-icu.yaml         | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml
index 3f99c8645767..cb244b8f5e1c 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml
@@ -22,6 +22,7 @@ properties:
   compatible:
     enum:
       - renesas,r9a09g047-icu # RZ/G3E
+      - renesas,r9a09g056-icu # RZ/V2N
       - renesas,r9a09g057-icu # RZ/V2H(P)
 
   '#interrupt-cells':
-- 
2.52.0