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charset="utf-8" From: Lad Prabhakar 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 Acked-by: Conor Dooley Reviewed-by: Geert Uytterhoeven --- 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/re= nesas,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) =20 '#interrupt-cells': --=20 2.52.0 From nobody Mon Dec 1 21:33:27 2025 Received: from mail-wm1-f49.google.com (mail-wm1-f49.google.com [209.85.128.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB674328B60 for ; 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Thu, 27 Nov 2025 08:24:53 -0800 (PST) Received: from iku.example.org ([2a06:5906:61b:2d00:4f24:123b:7b7f:5ea9]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-479111565a1sm39163795e9.5.2025.11.27.08.24.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Nov 2025 08:24:52 -0800 (PST) From: Prabhakar X-Google-Original-From: Prabhakar To: Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Fabrizio Castro Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [PATCH v2 2/2] irqchip: renesas: rzv2h-icu: Add support for RZ/V2N SoC Date: Thu, 27 Nov 2025 16:24:47 +0000 Message-ID: <20251127162447.320971-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251127162447.320971-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20251127162447.320971-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Lad Prabhakar Add support for the RZ/V2N Interrupt Control Unit (ICU) by introducing a dedicated compatible string in the irqchip driver. While the RZ/V2N ICU differs from the RZ/V2H(P) version in its register layout primarily due to a reduced set of ECCRAM related registers the irqchip driver does not currently access these registers. As a result, the RZ/V2N ICU can be safely handled by rzv2h_icu_probe for now, but it still requires a distinct compatible so that future changes can differentiate the SoCs when needed. Signed-off-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven --- v1->v2: - New patch --- drivers/irqchip/irq-renesas-rzv2h.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/irqchip/irq-renesas-rzv2h.c b/drivers/irqchip/irq-rene= sas-rzv2h.c index 899a423b5da8..0c44b6109842 100644 --- a/drivers/irqchip/irq-renesas-rzv2h.c +++ b/drivers/irqchip/irq-renesas-rzv2h.c @@ -616,6 +616,7 @@ static int rzv2h_icu_probe(struct platform_device *pdev= , struct device_node *par =20 IRQCHIP_PLATFORM_DRIVER_BEGIN(rzv2h_icu) IRQCHIP_MATCH("renesas,r9a09g047-icu", rzg3e_icu_probe) +IRQCHIP_MATCH("renesas,r9a09g056-icu", rzv2h_icu_probe) IRQCHIP_MATCH("renesas,r9a09g057-icu", rzv2h_icu_probe) IRQCHIP_PLATFORM_DRIVER_END(rzv2h_icu) MODULE_AUTHOR("Fabrizio Castro "); --=20 2.52.0