From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from SA9PR02CU001.outbound.protection.outlook.com (mail-southcentralusazon11013009.outbound.protection.outlook.com [40.93.196.9]) (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 7E42236D9F6; Mon, 2 Mar 2026 12:34:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.196.9 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772454864; cv=fail; b=pcXoEXHutuaSsyHN5DG71Z70P7Xq9NSKLz5pX5RLgM0gTrRv1AlFIIm1eRDP2Sau35/0HFDLemnFWkAgo4sPJngMkP4REfSmh9echu5dCwl8H/Do0LLMI81xxxDIbUOIw4zVmHPKb4I6w7Qvl5BXmW+pL3qsYwl2iQuDsT/pFj0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772454864; c=relaxed/simple; bh=6v6kQwLbAHYBa0zmg9OARVaR1eHoYZzgacgAzEzrhAs=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=b5gyTgeVM2REFLrHepSGCGmHAR7P0ic52XFG32WYU9kARFkZxD864JTeGiZ74e8OtzjSxeC9EVEJuxWaQiNcocHJfAsVQ/MNtgNtgO3V2rKpRGHJ+5N0+nZyRPySlLyxfy6PCDC7MOyZQckYQFgqv3DLPovURcBLixzZklK5kps= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=LXjPtupE; arc=fail smtp.client-ip=40.93.196.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="LXjPtupE" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=SA+/R3FGYNkKu3igiiSwJbAMpE4+AgtwvySZwYCj/A6yQhPlLcuzS4xgzFzdMEUF/JF2cpMaanP7obMZyNBwDqh2sF/5LH13MGH2AJ0Qwuzbyd+mfL42hoPt1/cJnGrXYRPi0kgVEv0Leg2nuaJAYjLvIkJXl51PKZCDMG9q2+HBWfVAfcy+XjrNaA3+YFCM5P9gft0dFxnqW6QT5jqRY9xqRrgRVU4b/TSBar8K9Dc0xqIkdrchVGPOFJFjrf+raa/d5iDuK4isAYz7qUnK1IuHbmCAOH5RemcdzHMQ4Q/CtfaD/8JzLul0mi/TOYAJy9KTtor/BE92QyJLilDP9w== 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=4z1pCqp83cs4H0Q8WNc2ltQyna8n9AQia0inmNPpeGk=; b=Bxup6Qqg5V+fodrFc319B2ockAZSeiNHebD4cG5r9B1b+Mn4UuTQEAZSwoH6akXc7V/Gt5jJUIBS4djJ4DpZjz/KQmNnGx0bMVbGVhwj5kJOUB0fPDMZYgDfaVODtlmJZyHrHMZY7Ozqjgo5qGCBaEz7Z/TJxyNoSrN44GwG2fDu4IfgDVsSRuicYkE99jpdd/eopWpCVMG8nJsQR+lXAZLN/kOPaVKxXKUALQg3fGsKEOTA4ZXZovDa9zqQ1MRm75JTItUVfNMHM5vkiRYUzhFNLTWhuLnNZL6CBIhZ9Dq8CMTXYqimBKO+RMEqAk+znsT3r17xNu9qZS4C3rBX3A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=4z1pCqp83cs4H0Q8WNc2ltQyna8n9AQia0inmNPpeGk=; b=LXjPtupElDMQiEux1SERmH8O6b/D3HXbrol/V14YflUchjIizMi57DRcCuJwbwHPIoe1G1eFcviubjTv3zsOSQEU5F+ZmfT5AXfRpUvw7RbteHvDEnt5rwYPsM4DzCZtxUShVZwrHElmPzvrwToYz0PMxukqNyFqXnX5WPxK6T9JDoWm/wGZ6GnbsdfIOiHhNLUmn5hVPPyiDkwPps+9jLm4Rrlb68m5ra4UuKY6wN4HCSok1wgQV7h69zci165f2NK3dKYahLOKYdmrqOm/bqXI2B4e3vAaUfuAyExG4gAeQ0AEAAoibXE6GsrBb8pxwYFSv/cBl9CNWzBbEteV1w== Received: from BN0PR02CA0002.namprd02.prod.outlook.com (2603:10b6:408:e4::7) by IA0PR12MB8981.namprd12.prod.outlook.com (2603:10b6:208:484::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9654.16; Mon, 2 Mar 2026 12:34:19 +0000 Received: from BN2PEPF000044A1.namprd02.prod.outlook.com (2603:10b6:408:e4:cafe::6a) by BN0PR02CA0002.outlook.office365.com (2603:10b6:408:e4::7) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9654.21 via Frontend Transport; Mon, 2 Mar 2026 12:34:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by BN2PEPF000044A1.mail.protection.outlook.com (10.167.243.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9654.16 via Frontend Transport; Mon, 2 Mar 2026 12:34:19 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 2 Mar 2026 04:34:03 -0800 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 2 Mar 2026 04:34:02 -0800 Received: from BUILDSERVER-IO-L4T.nvidia.com (10.127.8.9) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server id 15.2.2562.20 via Frontend Transport; Mon, 2 Mar 2026 04:33:58 -0800 From: Akhil R To: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , "Jonathan Hunter" , Laxman Dewangan , Philipp Zabel , , , , CC: Akhil R Subject: [PATCH v2 1/9] dt-bindings: dma: nvidia,tegra186-gpc-dma: Add iommu-map property Date: Mon, 2 Mar 2026 18:02:31 +0530 Message-ID: <20260302123239.68441-2-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260302123239.68441-1-akhilrajeev@nvidia.com> References: <20260302123239.68441-1-akhilrajeev@nvidia.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A1:EE_|IA0PR12MB8981:EE_ X-MS-Office365-Filtering-Correlation-Id: 8ee150cf-7da2-41d6-37c7-08de785806ab X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|376014|7416014|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014)(7416014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: hgrM/YHGxE5euxo7GEWYNhQ23WEZc16LA+ePbBdXIFrfsGvdLg8UBBj1pyIWaoj/x1LnzEscyGIrwYt0DL9dkqJaR+2SxapkLsXyzeTkjYdRU/QZdF4nlO4+dDn0w7dbnvqng7TDSBfO5wR5Vw5PB0uIHTG/IilzfnglbiAQY4GjjGhXA7n/AcRA07xAhh1aBKE00mxQL1aQTvE2JbGtZkSd3t9cm0zDbOAH1vZXNBNFY8R6NIVoMXejW0CVLyhZdKmY85WAbdblr3I/1tlSK9nKAVw4EW9o2bUxgmW71rxlWzFOktRUupw1iI1SJQwbw16hWAwOTkToAOwhjJO6TYSa2LPpc17QnBYunQbCyTuHVQwAihbUx0T665kDnT0noz6s8PDAcmb9FaQdJMhOSs8PeiOOcNYrfZEo6cJILsss98pn/Kdri9nmE+j0l5SU X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Mar 2026 12:34:19.5749 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8ee150cf-7da2-41d6-37c7-08de785806ab X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000044A1.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8981 Add iommu-map property to specify separate stream IDs for each DMA channel. This enables each channel to be in its own IOMMU domain, keeping memory isolated from other devices sharing the same DMA controller. Signed-off-by: Akhil R --- .../devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml index 0dabe9bbb219..1e7b5ddd4658 100644 --- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml @@ -14,6 +14,7 @@ description: | maintainers: - Jon Hunter - Rajesh Gumasta + - Akhil R allOf: - $ref: dma-controller.yaml# @@ -51,6 +52,10 @@ properties: iommus: maxItems: 1 + iommu-map: + minItems: 1 + maxItems: 32 + dma-coherent: true dma-channel-mask: -- 2.50.1