From nobody Fri Apr 3 03:00:56 2026 Received: from AM0PR83CU005.outbound.protection.outlook.com (mail-westeuropeazon11010016.outbound.protection.outlook.com [52.101.69.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D3CC43DD51F; Thu, 2 Apr 2026 12:09:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.69.16 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775131800; cv=fail; b=Vx4isdaqib7uppVNMHyEOrmNY5+LhprojRmD5C+AWD3GW0hxANDYNKBrw3grD2CRENAze465x1CzpfWt3yNt4hNRoioatnpGnpYRiVNxAkFaBrBRJzs6tTgQcSKkinIoL1Mltaqoc+6izhHf64MMgxXacNFIPia7YKbHmzPwrmw= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775131800; c=relaxed/simple; bh=9iFyenEtpOw3Fnh2yPQlQXb+QXfLXWpNkhghvpo6SDQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=YTD2oVjln+NJpalc0KEOEEnX/l1/BTnPu0VXqGMpyQTZkUrjQLeD1PKDgrZ+LedtUTgSWLJ9CuQX1NGXJ47z3dNSvNS2MNjRR89LNjhbMwyl8T0svmdQ+fiJBdM7/KYu+gyY0z8KscCztgOZKY2A4y3D92igsA1RdvDZReIJMec= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.nxp.com; spf=pass smtp.mailfrom=oss.nxp.com; dkim=pass (2048-bit key) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.b=GVun3WnU; arc=fail smtp.client-ip=52.101.69.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.b="GVun3WnU" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=NR//ddo/j80G0tMRqzFp9s4V5YCT4yknney7aLuP/EowmRiYhQwsdUvZo22FfmCxfa1qbHrFwB1u+qINNPcu68fE4AIP/1rul7IGuKG3y2buG9FGHRA1etK8+DKe0x0ps5Q0oUzSwTVSYu+IrHm47muAyKWpCRRt/OSZZeoNSUTO/FDiYeVaJiuiOS4sp9+fgnzOrHcItapKmfqZ2q3ZlembTQKa6iFK5r5HOYDSFFNqh5YuXtFgw+pDTN2VlV5sChsSuGDfgNaycNJOF7zP9ZNYpV+VkHlJQSmyNQSgm8oO9A2WlOqDbNrN8QmRTzsz9fga8i/eIdTncDW8vLRzPQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=1iN4ghA/j2Q0LVDr/jaJG1fnxy28CZRsg28y1YR0EMs=; b=JhCoF6A5bWomwM0CBFx9ZxXFrCCrGO35TI4NO2iQ/PBCkWOMjYHk7NwJCNFQ3VlCC5N1B1stWKzHZCJ9aNbFRWTyrxaNKjqWWBPh5BoK67+D3VSGDOoUSljJ3UOzI2ZCXKqpiZ1QAqMn9EHdVEIfXciH9qpObwEhuwL4/8G+jl+L/KKWGILPbDhgr1cGO0/wsuocJD4qpD+zLoettvQOgU2DyV7DbKoV8IOFtBOfUEYJA+hNngFLyqfdH9+lgSNlS6exKQkl6d6TvzySb786bZs32TO7yQecm9dM4QqCqkf9eJ4DNl1ETMDRXJBdBcsRs8rHX8L3Tx4fC0GUcsrvCA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oss.nxp.com; dmarc=pass action=none header.from=oss.nxp.com; dkim=pass header.d=oss.nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NXP1.onmicrosoft.com; s=selector1-NXP1-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1iN4ghA/j2Q0LVDr/jaJG1fnxy28CZRsg28y1YR0EMs=; b=GVun3WnUKrQ1BtdeLR1vBCNZWF/cy1XpydC8kv7UwoUnUegkAOgkkX6FKgEkqDJQKrkq+86oIr4zpqdVINaoQ3YbLQXDKZdp+eAoOR/PEFbHe6nH6e7GozEIBgR9pXlMwG+ifodCUyvYwVCd8n0jplquF4U6/Rhd8E9bpswy9TkCelBLUdAFD3u9ByYL+oRCstV1ksBy1xcMTHsM+9nf6kmY3ENVnoCeyea2zdLteFTUB5ckwvqAHxfh8awlyKddttn9X6hCbmrvn+Bhx/3hWYk6Khn1eyhp7NG/mEMVOQNvaBUoM4a4lzY54IXD2xVqzngXQ7cL8UYxLxF1f0grEw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=oss.nxp.com; Received: from DU7PR04MB11163.eurprd04.prod.outlook.com (2603:10a6:10:5b3::14) by AM8PR04MB7457.eurprd04.prod.outlook.com (2603:10a6:20b:1d9::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.17; Thu, 2 Apr 2026 12:09:54 +0000 Received: from DU7PR04MB11163.eurprd04.prod.outlook.com ([fe80::93f5:4ff3:2f4c:183a]) by DU7PR04MB11163.eurprd04.prod.outlook.com ([fe80::93f5:4ff3:2f4c:183a%5]) with mapi id 15.20.9769.018; Thu, 2 Apr 2026 12:09:54 +0000 From: florin.leotescu@oss.nxp.com To: Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Shych , linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: daniel.baluta@nxp.com, viorel.suman@nxp.com, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, festevam@gmail.com, Florin Leotescu Subject: [PATCH v6 2/3] dt-bindings: hwmon: emc2305: Add fan-shutdown-percent property Date: Thu, 2 Apr 2026 15:25:13 +0300 Message-Id: <20260402122514.1811737-3-florin.leotescu@oss.nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260402122514.1811737-1-florin.leotescu@oss.nxp.com> References: <20260402122514.1811737-1-florin.leotescu@oss.nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: FR4P281CA0312.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:f6::19) To DU7PR04MB11163.eurprd04.prod.outlook.com (2603:10a6:10:5b3::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU7PR04MB11163:EE_|AM8PR04MB7457:EE_ X-MS-Office365-Filtering-Correlation-Id: 0cef181e-f794-494b-910d-08de90b0bfea X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|7416014|376014|19092799006|56012099003|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DU7PR04MB11163.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(7416014)(376014)(19092799006)(56012099003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?iso-8859-1?Q?W1heGlYnRXDMAomOgAM6dD384snKbF868RsfaMwllvMfd3q9hB9dp6eSoa?= =?iso-8859-1?Q?S6CHX9zYnSnvnfQSqZ6m990DjL2ZOwtzvn3Q7TgwDhpcp10tsmnPo+w8ez?= =?iso-8859-1?Q?cVj/8gfTXrwAIqd1qaSDOSB9hHVbPDSVEE0z0A16OYL+KqPoMQ372JWPRz?= =?iso-8859-1?Q?oN7GjZoYZmtcPC2rpcgNRUbASQnG101pGXbuicMAECwR6DOkkv1oeD52Ey?= =?iso-8859-1?Q?KAr3pxKbN+Nb1xUGbP5Jr9Yraet5cFDLfkjZOswGUDgC56ghzwBXvpY02J?= =?iso-8859-1?Q?kHkLaMh0mXjsjlX3ctHAx0HAvzSAK3EMS5NitGAj+ob8VWH7RDwsUGVpkj?= =?iso-8859-1?Q?mgRNsqZghZX8ZUlqDfcAXEeVZg6VHke2QqlgEtlbKPakI/B6cOfjaMIUjs?= =?iso-8859-1?Q?9v7dEJip1JE23SS2hLy5hBgjUWGIqT5RN2I2J169zXn5NBvDFPiqDbVnpL?= =?iso-8859-1?Q?B4Q/1qlM+yF2dz9gF1rM9sVqQSPKgKE9hI25UzMtOVXv35yFbNFwUjbTA8?= =?iso-8859-1?Q?s/25uR4SNww92CTgu9kba91RJrVE80HcWIDPjTl8WIEp8MAy80E2VaHbku?= =?iso-8859-1?Q?oaYNkYikdAkftCuw0UcDNegjI7hredL5Ok8ElXH2p7Ot5CldYPR9M1VoTX?= =?iso-8859-1?Q?H4rj4PohkXn1V7TjAztnb6Hm2kzPIXf+SnMYPe/A3ENM6loglfPY4u02pS?= =?iso-8859-1?Q?vWh0yj7aCsTVrJV+IiA1qs1aSZ8IyX8mHtXEEkJYMMwWZygxc53KVeRAGl?= =?iso-8859-1?Q?9pvBSLzeDvoJr/6O/yA9VcvKQrZ1Ud+uDK8/m7OrhIxEg+MArsW8XQI1mF?= =?iso-8859-1?Q?KIrJkX05++MJ1AyWdjEBd/0pcv+ZqmdP6qrpcYWPu5NxWsWlNNH2AqPQ2R?= =?iso-8859-1?Q?tyVQObDNZlAAcQ/jOUlAni4poKZ/Q/6ajBP7V2arybzHF/i9Qp2mtwHzoS?= =?iso-8859-1?Q?vEWyMXbW7smbCnwGYqHlvBOb/oxw0We0yrP1Q4btxXFogwAan4oMnsyBnX?= =?iso-8859-1?Q?Hj5IV+QXdqWEqx/ghGpecVSiee4VX4w1Ti6GhZdz5OmHXF7x+CcCJ8VVHM?= =?iso-8859-1?Q?vXTibWsO5yHeP/53zK0CuRIG5e43toQSfvjgB7apKXiEWWM3ZHzhJVitVw?= =?iso-8859-1?Q?kSfhh1Q6CxrTdygIGYgoUuxv2M4L/IsjBnzy6qb9oLRPidXFqVCO4pUQPt?= =?iso-8859-1?Q?bFRni7oYwSSV+z//Z8mgHfS31Z0Vm1xln3pYHdknoQEm+zuIbiFapRtGUB?= =?iso-8859-1?Q?Pmu+HpnvFdBBW8dlIQS0BiNWe7S2FlJTu8mIQehXQsZVfJHMN/Sj9M8yJk?= =?iso-8859-1?Q?cpbPgZV+hvsW5gZorvZ6SqJAFG9DD64GHjZCktjXD+r9bNnX892e9x8fTb?= =?iso-8859-1?Q?eOjeZSedqw4f8pArBTdRvrhRG8v0r0oddW+OSn1IkuF5/49itUEqn91mG2?= =?iso-8859-1?Q?7MxJJrQgXhAC9RcIp6S9msAvZwujwixZ+EA/hCcK9lTb5ehR56QrZBrlP8?= =?iso-8859-1?Q?Gj2KwCUlIkBZozZwnagHDGwl04lwqd1cZ5kcqWF+0TIhq2UQp+1QtzWb05?= =?iso-8859-1?Q?ClQBnP/bx65hBHk4Kxli73GfKBdwsaWVkj/vardWSiDowOorO8MBCAmE4I?= =?iso-8859-1?Q?V2969XfsjrXXqYTCx8XAKDsAw9ITkR8HxV6yTzoprwqvlnMTEk/GdVwTCh?= =?iso-8859-1?Q?S8eE9EhHnGclO8ZExv0d2Fj7hSU1d0PmtCHD6Ye5iwvOhNXghYPozO9AAb?= =?iso-8859-1?Q?hKSnVG06YvrIXMlA3sGgHtt8EcV49oUYidus9snQG0Px4HW+wlJVDCXlI/?= =?iso-8859-1?Q?ZQTJumR5sg=3D=3D?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0cef181e-f794-494b-910d-08de90b0bfea X-MS-Exchange-CrossTenant-AuthSource: DU7PR04MB11163.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Apr 2026 12:09:54.3468 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 0DPOKZd3bXw8VthK0ll6JY8AxLTrkTzKDBSttguBYGTGFEcqVrPk43JiCxnyWC/HPT4SqscpOxae0zaov5fb0Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR04MB7457 Content-Type: text/plain; charset="utf-8" From: Florin Leotescu The EMC2305 fan controller supports multiple independent PWM fan outputs. Some systems require fans to enter a defined safe state during system shutdown or reboot handoff, until firmware or the next boot stage reconfigures the controller. Add an optional "fan-shutdown-percent" property to fan child nodes allowing the PWM duty cycle applied during shutdown to be configured per fan output. Signed-off-by: Florin Leotescu --- .../devicetree/bindings/hwmon/microchip,emc2305.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml= b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml index d3f06ebc19fa..8c2548539d7f 100644 --- a/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml +++ b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml @@ -54,6 +54,12 @@ patternProperties: The fan number used to determine the associated PWM channel. maxItems: 1 =20 + fan-shutdown-percent: + description: + PWM duty cycle in percent applied to the fan during shutdown. + minimum: 0 + maximum: 100 + required: - reg =20 @@ -80,12 +86,14 @@ examples: fan@0 { reg =3D <0x0>; pwms =3D <&fan_controller 26000 PWM_POLARITY_INVERTED 1>; + fan-shutdown-percent =3D <100>; #cooling-cells =3D <2>; }; =20 fan@1 { reg =3D <0x1>; pwms =3D <&fan_controller 26000 0 1>; + fan-shutdown-percent =3D <50>; #cooling-cells =3D <2>; }; =20 --=20 2.34.1