From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from PA4PR04CU001.outbound.protection.outlook.com (mail-francecentralazon11013053.outbound.protection.outlook.com [40.107.162.53]) (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 374D91946AA; Wed, 1 Oct 2025 20:47:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.162.53 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759351645; cv=fail; b=O/2GAC5xzRTr79QwngPm2eL2hIdbCRcnVTVlKu+mI3UWt4bZOqk/KFr5fzj2NmqcRTY/eFc+c40651Myi70w46YcksZO+yIqEu9D7jCAPVALTeH3fxbewX4pri3aLcGT4nFbj9P1QmaNj28fCU+S6oW9oSnjwY+VvT6+uN+FhjM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759351645; c=relaxed/simple; bh=c00RlwaZ7qoVmUPUFCTp676DiiqLQdRdFDNuNFJbpvc=; h=Date:From:To:Cc:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=f0ustPgmRyRrfLP3Vo3HLr61txcvVwFHB9xtpIcpBT8QgEKKlNVy0YzPmV0KXMrgUs6dFvdQklhchi9mrsuFUUwdzJTL8wNkQBmwyWDFpwUaRIAZxj3kaxhQluvtoKY9fCROs4WJnp4iNLRCE623ft7jb2LLbX0I0ay2BCTvXYU= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=hbRBd2aZ; arc=fail smtp.client-ip=40.107.162.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="hbRBd2aZ" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=xW/N42CKHGZaay0L1pqpNzmmtsLCrGWP9P6DUHOrEUXYOE+7Fk08Fo5xHtILW+4KdHQIw790MWFHhwNA1+8d3rImu1G8JpDAOeBc+99TcoYYkfmonHqU7/ayR7oSZc3xvBUaGNI0PqYAZGlQaymhYIq7sR0aCdF7z+ekl+cDAJu2oR4NCbDiufIRIKfiKdt9dopvdsUGNaPlJlFnibmwdgZ7l+bcWWJdKO/v5QR/1Ldb2Ns6gxfVFQ9D9CE9ziwss27w2cKTzgkax+yOt5eblx9mA4CQDWzo44/xcMdAE3ujt4/IGX4B4E+5D5yq0trql/eoBD7MTUSDP6v9buPP/w== 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=Z/qgt2eGUz/Y/sS0Pt9OCDBFKLe48ccjJY8jwpfsQZs=; b=d2kD3loypWt+Iuy4xF/LvSOrvvvxvImhWpVHn1ChSQbiXrJV0o52SO8ommXCKinFOuWVzfd7N2wBIw2qhdEV36H5ocEAqNjIWm4lAsdS4p0Z9pdQJb/zK9Hzo8V4Rw+cgPj10aZgO52euvVd2Hdy3jHJQU7pfaeQNdCC187AHCrkUE/nJLPXKVk5BQEXJH+z5ZcwwL/3ckO6lxhFKwp1UJTPoqxeofX/7B3YGYTT7zWvxvJ39kUlndCjqzFVABW8F1Y6yOpUIaFMq9wf3astnD/Ss7mH6GrMu3A37pbWuIkPkoaq+d6/DM8bBF9N1652GFAg75bv5Y6LZTfvsZcHiA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Z/qgt2eGUz/Y/sS0Pt9OCDBFKLe48ccjJY8jwpfsQZs=; b=hbRBd2aZOr+nd5gG0hji0E54EIQEOEd3EIQBsPejKZ29yH1D8E0aA9inm+j6w2SIYA7hEAHUghnoxJvpFQ3B8vBh5om/HNPeKSexGlHpbioaPaRPjNqDo2wD50nGII+uz3NCT1Rl6devHwQiz11LpKaTr1VYqjO0FpUxpsdlR7U1ZgIEUwD3Spi7yse1w48qc+zLYgnFhye5srDmL6Q4IlPgqzUDZ9I1b7uKFVgHob9+0k+r8Cb1l8e6UICPScYYjXdOwuwGbn4qXK6PwPYBHsh5T4XtRH4jUGVkVH62SpGosvQHueYSoUz/bwUMeFKzl3+bdzieVAxsf9X4LJ4phQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AS4PR04MB9621.eurprd04.prod.outlook.com (2603:10a6:20b:4ff::22) by DU2PR04MB8966.eurprd04.prod.outlook.com (2603:10a6:10:2e1::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9160.17; Wed, 1 Oct 2025 20:47:18 +0000 Received: from AS4PR04MB9621.eurprd04.prod.outlook.com ([fe80::a84d:82bf:a9ff:171e]) by AS4PR04MB9621.eurprd04.prod.outlook.com ([fe80::a84d:82bf:a9ff:171e%4]) with mapi id 15.20.9160.014; Wed, 1 Oct 2025 20:47:18 +0000 Date: Wed, 1 Oct 2025 16:47:05 -0400 From: Frank Li To: Shenwei Wang Cc: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Linus Walleij , Bartosz Golaszewski , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com Subject: Re: [PATCH v2 1/4] dt-bindings: remoteproc: imx_rproc: Add "rpmsg" subnode support Message-ID: References: <20250922200413.309707-1-shenwei.wang@nxp.com> <20250922200413.309707-2-shenwei.wang@nxp.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250922200413.309707-2-shenwei.wang@nxp.com> X-ClientProxiedBy: SJ0P220CA0024.NAMP220.PROD.OUTLOOK.COM (2603:10b6:a03:41b::32) To AS4PR04MB9621.eurprd04.prod.outlook.com (2603:10a6:20b:4ff::22) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS4PR04MB9621:EE_|DU2PR04MB8966:EE_ X-MS-Office365-Filtering-Correlation-Id: 42f5610f-599b-4372-036e-08de012bb56a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|19092799006|7416014|376014|52116014|38350700014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?N6TWJHEge4YUTh5Bj2QkO5EnjD2P0PKYtDCt4IlT/MOMLLT4ngtCXAatePgn?= =?us-ascii?Q?jZOkp9n1tg0YdPg8QGwoBfcRZL4idueib5K+QHs4RCn64UYDCKfkUnTOIOEQ?= =?us-ascii?Q?L1n5bIWYsz6KhiN1s2fa7x/IHNh3fUMLAzf79cLQGAx2U1KDgMB7MWe1MgQB?= =?us-ascii?Q?b3ttP9KMZCrqKq48qE17t5G8SnLoaQBXFB+SFZ3KdicbgAkg0fye80Mi1KOs?= =?us-ascii?Q?uUZWNyf+MCqMJuBLAd6Pb1cNWavVBEyo+xBRN5j3qwGxvIPrx8cyIgpEzCh9?= =?us-ascii?Q?bBXxz6kVvU9p7vH9vF1TtHx8o16qnNpp88A0UTibqFgc1iuV3DvB38bYH3uC?= =?us-ascii?Q?Oafv3SrBL83X0g4I4bLJs3NPa6Xb2JJJ0ymVOp5HA3YWa9/4YMxxbavFTJrY?= =?us-ascii?Q?Z9otxB6sIYmsgcvo/C1vWrSKHy8v/g905I9ubUJik8pQIpOyScRgFSyL3qHg?= =?us-ascii?Q?05s9JO8mXpD5Mf7eom5ZjWXlF/2VIGFJXGSxJZLkhKixELaGaf/FeZ8mGmeo?= =?us-ascii?Q?7b0wxWHNgskLMP+qqDoiM9GxJW30n8kki18ahVay8xehBFyuIhbeA+drc8KB?= =?us-ascii?Q?z82wV0GA5C0lVEQKJBfy7CyVPj9IJKp7f+3oOAQ3Z1NpinJ49IL+e1C+/Lun?= =?us-ascii?Q?V/tptnLrn1OWJw3k+fiRPm6RRHCHpD6vX6kE5rrvpv+/YLpvwgHCIL5tNC8L?= =?us-ascii?Q?0LSYsAZS2K+z4B+fqlnTlQNdUUJsN5C4Mhn4Q656vnElFQmqIGHxVvewUmZY?= =?us-ascii?Q?FgG8zLEe1yHGhk0Ta87UCNa7L92qPcIWXsmA0mK6fuR8bLn0XiwNT2IEdRNu?= =?us-ascii?Q?hHZrh2k4ZzvqDPGwL3Q7qKVzK9DPYpLJVXqCsxQkdpj6RZ9Eks3Q6Ap3H1KC?= =?us-ascii?Q?SKTLIx4NHLIahhdxSFmNNsrWiQhe0oPoEJN6U1YPKiKRnYSEmb2c3WJlCEkG?= =?us-ascii?Q?UvUcE742vA/9X+cTBt8EIEWLI64yMEp4CjldGW+RqWe97cofabRqTXRxLnWs?= =?us-ascii?Q?33xtY9U3M5IViMZr1RGmRORP3Qzn1Yptcl91fOUKhApxtb+lebuG0yR43LIB?= =?us-ascii?Q?lUYeOnQXiCCcWed0tjRtPrNSaQeaGbSpLKnraw7dAzd36wPD7emjelIAlg/N?= =?us-ascii?Q?H491NsNmUkP4Tx6zrrMh3T8uKo+lUWGuSth2AyM98lnt4IfCxVdlWvQUo4vn?= =?us-ascii?Q?XlnlXey2z0Cq2st+wwJ7Zb7B2CWkRPRbctGgC3xYnaZcGqbrl9J14+H9T5SM?= =?us-ascii?Q?gtluF9nHZuJYWnIW5KdhMIVA8xc4dfkWce2M/Ml4DlSRlBSLvPsAcB2vCIQ2?= =?us-ascii?Q?C4AqbfJtNqrPu8tPZatgkwW/oZ7XcpW5qbkVdw2k3HhKAmGhKxbslkiCKkgf?= =?us-ascii?Q?qvRgXQNiZTWPCY8DxVa5PM3wl5TJzKjiN74IkMwRQ6ye728icvDKyHjRQW8M?= =?us-ascii?Q?UfDVs2BbjqRv+fk88UdgdmODYgAX5pKMP66FtGXd9qO463NUri4uHZm5SLzR?= =?us-ascii?Q?/MarzVwLt0Ksf3BV0ureXFe+vVtrXPG/9l4w?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS4PR04MB9621.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(19092799006)(7416014)(376014)(52116014)(38350700014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?QoXt5ZYA3iapYU9uoGYTnOx+/mK3QLixLHTimrJHnlKMcTKy4BB1FEmpZDza?= =?us-ascii?Q?2+gQ/aoj32pzbrBBZLvGgYcoflhfeL3Gw1IPtrSrmuzsjhfo6Sfy93fj+Z/X?= =?us-ascii?Q?5/UQsVyxIInNRvYoYDtD3rhKIUSEpb9JbKEDV3YJvm3Ff8SGke1/33eR39oL?= =?us-ascii?Q?/RHXUZzrhYL+34m4vDUhbhbbkrFYUyn+8Oxz06hX4ZjSc8dCQ2AHw7Hje3zZ?= =?us-ascii?Q?ohg98AOrfR1Yna+qjhIxSvi+E5u4tIQxyvwKHbF1d9z6SXmkXMwv+3HcMEbx?= =?us-ascii?Q?U+7zW5xybZ/PqE89YPXH3YuTOX3MNUPTPuyDfVXNMS+NhpUk2XfYPOZbqHD9?= =?us-ascii?Q?DIvF7c2a3uYNB3tb6uLZkj4uWT7nGNZMrwBpclsYIg89qht4rPvFWNq1H8Vq?= =?us-ascii?Q?KIQpIrVCO3qZQDodaoB4cM2CKhOsj90cRym7SderOfaCmiCPO7Jz2zliQfts?= =?us-ascii?Q?QUU9geW57QCEkn6ab/14m/MkwUOl2+feKhM7mOJLdhe/wiarbQnGBrMRnvRL?= =?us-ascii?Q?mgZ3kzqFD35Kx9oaxF61kmnNKM2mTOUtwRMX8QjStdn2uiqBuJnZkHDIDclV?= =?us-ascii?Q?QB5qFwt84DT0RQIkQE+kAJYHoC78f8/iXQFYOSJ2/Sx+qjIbmHH0VNu4IsHm?= =?us-ascii?Q?dUvQoxpkLgExcCLDolKiL88Z9EFyjr+a4U9wOapbZoAkCCgWntD7kd5BRsKO?= =?us-ascii?Q?uARgUmKDq286W5KPeDmVg6OIoOYH23fwxCbEU34cSzsWB/nY4ovAiIpysxi6?= =?us-ascii?Q?u2naViFT9CRlv43lVl6laSE75cjKm7Z40CmsF6h5fD8Crkjw1jivbWFWUnLm?= =?us-ascii?Q?ZSdorPYnSJFYgTwihyXyaz1lvMDp3r5m53O2SDjMlJLlDuExLQJuJ5+wL44E?= =?us-ascii?Q?DMCGZa6AG+WhS3itCu6O03Ei2UUH2JI6Pc40jCXk6mnY985Enxw3bVxeIES6?= =?us-ascii?Q?ijfGCQrbN1DAxJObszdl1DeT9dHg/+rT0JNJQpuVa1Ou4imIUnF5+EAeSuSi?= =?us-ascii?Q?FCqzseBvOUUf1VHC/xIPBcSSMwyNyaWFkcS5vLVhX35882FyaB3mxh+Y67aZ?= =?us-ascii?Q?JK7gSRfuOKArBHJy7viuf9/kPqUDcz5wKU/ColDVr6adLFSzqvMSuH5QzBQm?= =?us-ascii?Q?98iXOdoXn00AvqjboAe5GsJZHEpVrjlkLHZILgksvkv2kfkxen3qHG3WbiYs?= =?us-ascii?Q?CiDvgSQgeOb3jwJoDep0PoeIqqATsha9bjU47XB1KyC0I1JhvWW4w5Hrw7oi?= =?us-ascii?Q?KBeLTEn9ZW4F4THAmYQl+ongVdgVH3lNBxAyVc4qaPJmPRwHUXXCoXRPsXpn?= =?us-ascii?Q?F/t0IYHeWp3pBHDRW67y0mqodX+abBO3B87ThdWtUvdY1JzanmrgdCrlyMMr?= =?us-ascii?Q?8xisnSdRu32nEKZf3tZnXAcZvqZp+1bSAEVZh8GMo71Xi7Pt0P11p+MlO/Ub?= =?us-ascii?Q?Koa9BsBKhk+vV9sCH6Jtn3utNytSYiVHwOf2XVYDPo1oPr5ZOPswvrR+/2IP?= =?us-ascii?Q?mOHanIFIw/kL2WnPqXZwPksyQoRYu3KwTY5vhO3U8vWE2zcM2VOfAhC8s2wU?= =?us-ascii?Q?RweIqdBNfQcg94i8wWfRJmiUaIJTQxVZ1lAnaCla?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 42f5610f-599b-4372-036e-08de012bb56a X-MS-Exchange-CrossTenant-AuthSource: AS4PR04MB9621.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Oct 2025 20:47:18.2211 (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: i3fS5wBcedG+aI0uyc+eo4JdCY8qoHtuQpvJJdtOgxtJpG32cjttwBKQW5JAbPa3UN9l4DkTNvWvDkEbWJC8Pw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU2PR04MB8966 On Mon, Sep 22, 2025 at 03:04:10PM -0500, Shenwei Wang wrote: > Remote processors may announce multiple devices (e.g., I2C, GPIO) over > an RPMSG channel. These devices may require corresponding device tree > nodes, especially when acting as providers, to supply phandles for their > consumers. > > Define an RPMSG node to work as a container for a group of RPMSG channels > under the imx_rproc node. > > Each subnode within "rpmsg" represents an individual RPMSG channel. The > name of each subnode corresponds to the channel name as defined by the > remote processor. > > All remote devices associated with a given channel are defined as child > nodes under the corresponding channel node. > > Signed-off-by: Shenwei Wang > --- > .../bindings/remoteproc/fsl,imx-rproc.yaml | 129 ++++++++++++++++++ > 1 file changed, 129 insertions(+) > > diff --git a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml > index 57d75acb0b5e..16c7db4c5a79 100644 > --- a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml > +++ b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml > @@ -84,6 +84,98 @@ properties: > This property is to specify the resource id of the remote processor in SoC > which supports SCFW > > + rpmsg: > + type: object > + additionalProperties: false > + description: > + Present a group of RPMSG channel devices. > + > + properties: > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 This is reduntant. child nodes have not address. > + > + rpmsg-io-channel: > + type: object > + unevaluatedProperties: false should be additionalProperties: false if no $ref Frank > + properties: > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + patternProperties: > + "gpio@[0-9a-f]+$": > + type: object > + unevaluatedProperties: false > + properties: > + compatible: > + enum: > + - fsl,imx-rpmsg-gpio > + > + reg: > + maxItems: 1 > + > + "#gpio-cells": > + const: 2 > + > + gpio-controller: true > + > + interrupt-controller: true > + > + "#interrupt-cells": > + const: 2 > + > + required: > + - compatible > + - reg > + - "#gpio-cells" > + - "#interrupt-cells" > + > + allOf: > + - $ref: /schemas/gpio/gpio.yaml# > + - $ref: /schemas/interrupt-controller.yaml# > + > + required: > + - '#address-cells' > + - '#size-cells' > + > + rpmsg-i2c-channel: > + type: object > + unevaluatedProperties: false > + properties: > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + patternProperties: > + "i2c@[0-9a-f]+$": > + type: object > + unevaluatedProperties: false > + properties: > + compatible: > + enum: > + - fsl,imx-rpmsg-i2c > + > + reg: > + maxItems: 1 > + > + required: > + - compatible > + - reg > + > + allOf: > + - $ref: /schemas/i2c/i2c-controller.yaml# > + > + required: > + - '#address-cells' > + - '#size-cells' > + > required: > - compatible > > @@ -146,5 +238,42 @@ examples: > &mu 3 1>; > memory-region = <&vdev0buffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>; > syscon = <&src>; > + > + rpmsg { > + rpmsg-io-channel { > + #address-cells = <1>; > + #size-cells = <0>; > + > + gpio@0 { > + compatible = "fsl,imx-rpmsg-gpio"; > + reg = <0>; > + gpio-controller; > + #gpio-cells = <2>; > + #interrupt-cells = <2>; > + interrupt-controller; > + interrupt-parent = <&rpmsg_gpioa>; > + }; > + > + gpio@1 { > + compatible = "fsl,imx-rpmsg-gpio"; > + reg = <1>; > + gpio-controller; > + #gpio-cells = <2>; > + #interrupt-cells = <2>; > + interrupt-controller; > + interrupt-parent = <&rpmsg_gpiob>; > + }; > + }; > + > + rpmsg-i2c-channel { > + #address-cells = <1>; > + #size-cells = <0>; > + > + i2c@0 { > + compatible = "fsl,imx-rpmsg-i2c"; > + reg = <0>; > + }; > + }; > + }; > }; > ... > -- > 2.43.0 >