From nobody Mon Feb 9 16:02:54 2026 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8158A346777; Tue, 3 Feb 2026 12:43:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770122589; cv=none; b=tF18QfJM+KsqZ8AJW/3s5v0CTPTD4yVn/AOO+CM56FlQMFPW35yzlw8ea+5Ij0nuLAISlUeBSfcYpgKab4yxsCiRcOjT7l0LvG1Ttmj4jVhjCpuwhoriBEfFoxm6PLFbDhncN/pngiMQo57iVymhFqY7fn4zi2eVUpzzuRlZpZw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770122589; c=relaxed/simple; bh=5bX7wrIWf/xJkRhW09duvPVbKy38n0Uz8+BAuS02c5k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dVYiYtfv2xhvFAwDdT2lOIB+1nB8uMViaLVcxzmA7rQ6ufEFPJfeXL7NHS3RrirRXg+yFUNKDzhOPOYhByYtONNUqPM73+zAEPDCIojVrKnqe/pZZ18qo2wSuM17uUusCIuerl7Fh5HaysDkNza0BY9T6pUJisV3jPpzwaIz5w0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-CSE-ConnectionGUID: n4Y1FAuJRLeAtyEOjm157A== X-CSE-MsgGUID: 0idDbr/tQzeND+6zcKfbXA== Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 03 Feb 2026 21:43:03 +0900 Received: from mind-2s.example.org (unknown [10.226.36.118]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 1B203400F78B; Tue, 3 Feb 2026 21:42:58 +0900 (JST) From: Fabrizio Castro To: Rob Herring , Guenter Roeck , Michael Turquette , Stephen Boyd , Wim Van Sebroeck , Krzysztof Kozlowski , Geert Uytterhoeven , Conor Dooley , Magnus Damm Cc: Lad Prabhakar , linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Biju Das Subject: [PATCH v2 2/3] arm64: dts: renesas: r9a09g057: Remove wdt{0,2,3} nodes Date: Tue, 3 Feb 2026 12:42:46 +0000 Message-ID: <20260203124247.7320-3-fabrizio.castro.jz@renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260203124247.7320-1-fabrizio.castro.jz@renesas.com> References: <20260203124247.7320-1-fabrizio.castro.jz@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" The HW user manual for the Renesas RZ/V2H(P) SoC (a.k.a r9a09g057) states that only WDT1 is supposed to be accessed by the CA55 cores. WDT0 is supposed to be used by the CM33 core, WDT2 is supposed to be used by the CR8 core 0, and WDT3 is supposed to be used by the CR8 core 1. Remove wdt{0,2,3} from the SoC specific device tree to make it compliant with the specification from the HW manual. This change is harmless as there are currently no users of the wdt{0,2,3} device tree nodes, only the wdt1 node is actually used. Fixes: 095105496e7d ("arm64: dts: renesas: r9a09g057: Add WDT0-WDT3 nodes") Signed-off-by: Fabrizio Castro --- v1->v2: * No change. arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 30 ---------------------- 1 file changed, 30 deletions(-) diff --git a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi b/arch/arm64/boot/d= ts/renesas/r9a09g057.dtsi index 80cba9fcfe7b..504c28386622 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi @@ -581,16 +581,6 @@ ostm7: timer@12c03000 { status =3D "disabled"; }; =20 - wdt0: watchdog@11c00400 { - compatible =3D "renesas,r9a09g057-wdt"; - reg =3D <0 0x11c00400 0 0x400>; - clocks =3D <&cpg CPG_MOD 0x4b>, <&cpg CPG_MOD 0x4c>; - clock-names =3D "pclk", "oscclk"; - resets =3D <&cpg 0x75>; - power-domains =3D <&cpg>; - status =3D "disabled"; - }; - wdt1: watchdog@14400000 { compatible =3D "renesas,r9a09g057-wdt"; reg =3D <0 0x14400000 0 0x400>; @@ -601,26 +591,6 @@ wdt1: watchdog@14400000 { status =3D "disabled"; }; =20 - wdt2: watchdog@13000000 { - compatible =3D "renesas,r9a09g057-wdt"; - reg =3D <0 0x13000000 0 0x400>; - clocks =3D <&cpg CPG_MOD 0x4f>, <&cpg CPG_MOD 0x50>; - clock-names =3D "pclk", "oscclk"; - resets =3D <&cpg 0x77>; - power-domains =3D <&cpg>; - status =3D "disabled"; - }; - - wdt3: watchdog@13000400 { - compatible =3D "renesas,r9a09g057-wdt"; - reg =3D <0 0x13000400 0 0x400>; - clocks =3D <&cpg CPG_MOD 0x51>, <&cpg CPG_MOD 0x52>; - clock-names =3D "pclk", "oscclk"; - resets =3D <&cpg 0x78>; - power-domains =3D <&cpg>; - status =3D "disabled"; - }; - rtc: rtc@11c00800 { compatible =3D "renesas,r9a09g057-rtca3", "renesas,rz-rtca3"; reg =3D <0 0x11c00800 0 0x400>; --=20 2.34.1