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Mon, 15 Dec 2025 13:19:30 -0800 Date: Mon, 15 Dec 2025 13:19:28 -0800 From: Nicolin Chen To: Ashish Mhetre CC: , , , , , , , , , , , , , , Subject: Re: [PATCH V7 3/4] dt-bindings: iommu: Add NVIDIA Tegra CMDQV support Message-ID: References: <20251215064819.3345361-1-amhetre@nvidia.com> <20251215064819.3345361-4-amhetre@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251215064819.3345361-4-amhetre@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002327:EE_|DM4PR12MB5962:EE_ X-MS-Office365-Filtering-Correlation-Id: a1c10b0e-1b8c-42d1-9d2b-08de3c1fac0a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|376014|1800799024|7416014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ClPmm+HEyKioTa1umTUSzxdKMQY9JBHzlLrZ1HybnV6q8NVidGeyiKNaX9HU?= =?us-ascii?Q?hicPT7Y+uqLhW4lmeURVm+MMycEVBd80TRD95vpzH7tFAyF+R5/rWsgexhv0?= =?us-ascii?Q?O2YGe3hCBeBdy6irUm5I5p1JfJZPRLbb3ZBYs+nZge17nKVPmNv+56nu7yZ6?= =?us-ascii?Q?hchbMPCj5/pXawMSl+FqlT32uV9dmVNB+CiD8zxuacTVa7F3N28wtCVwEoJ6?= =?us-ascii?Q?QdpASf7y4rxPb2jd9Axnz8ooR1rSLxrjHsUQyhTvH8zYIWzVJAcBS1kV4i3L?= =?us-ascii?Q?5Dx/rXl9bi0UWiCVgtskGcL7yq8ATd3YyFQjayEN0PFN9fFU12FxrGfqlLhC?= =?us-ascii?Q?JukjfVnu/fsBTZ8+ejuTCPcTfKVpr1VunX++dpCorzXNiAy/HsZGokPZuPsh?= =?us-ascii?Q?I+Dj02FZ3YZn6E3BiifBw1ysdoQjIqrScbobY2ZhXDwWP52Inm9189JK0LWc?= =?us-ascii?Q?VsM1JoUeXJsXz954ORh4iDcx5Xgg/R29TU4Ff/rEUYunlVNT4liZuz8tkAJA?= =?us-ascii?Q?qGxyB993kyxX8nfS+bwWttDKAQkZ4tP0fElQFo8y/NXXDLSuztXao/Rjx1CA?= =?us-ascii?Q?nns2sB1rT/Vz0e5BLnnGpx313iPHjbwhiXC7VrVVaIIIrRKWVIgBObJsk6MB?= =?us-ascii?Q?UyKvetqeYHOULzbw7di/etMYhmDBpDfVu+MlsUxwvpj2ANmGDdKdPaxOqGPI?= =?us-ascii?Q?tk47ex8lY/5okvAvPIud4xoOnY31qnqCF89P75S32tdOzZpFRDVesf9gBbVp?= =?us-ascii?Q?h/pyEEXnR4A3NwIWo+c+AGuPWWfO2d43gpfGEiCM8EUwsMiNB+16r+nbrP2q?= =?us-ascii?Q?0hDw4jZCdX0jZ1XX2mcHKzzC/Sw9n9qCZUHLAtAPOl2HDCQeyXycUKTQru7v?= =?us-ascii?Q?sOUYVc9y7OoYyEgSxAO+XWsOkXgF0zoUttQZrFv/hnKpzB7pWdYO6oZxP6pv?= =?us-ascii?Q?cBy2fA+3KZxdisDH8nJk5WS8qTgSILjuTgC2dY3LtnS660+z2iG7mmmvmuSq?= =?us-ascii?Q?UljalDZI2qeZWCQ3w9gtP6uMTA/cEY5UDOAE7BvEyUPFehg9MxzrzRSeVp2i?= =?us-ascii?Q?/LOAdpaksYGrtj6A2WFtQ+hA95GpN+tOMnKtohJS2vJNuJITD+1QWC2lXnrU?= =?us-ascii?Q?dIfjYO+7Tx5iDalruXxWD6dy1ZGbKgl022MJxDIFE8AqS0KvkIHYBmD8XB7g?= =?us-ascii?Q?TmIajQCagChtBXwk5RbIWGIm9lwe0F3jT08nLd4vlsvncp0DPTiOMIXcpjE/?= =?us-ascii?Q?OT1CAvfaqovufnfao9EFMzD1r/Gx/pgBMNeWratWZu0y95SRiObkJktnMrDj?= =?us-ascii?Q?TIyZhMOKT2JDCt38VjOPf5TGUtD5m9h+PJeCUbQZOj9HSXhS7CJxig7/7blA?= =?us-ascii?Q?C43oSdsGM/R6iDJXhQBMeiglmlRTcCi5lDlKYC796kiuMV5CsF+dMDMG7uu6?= =?us-ascii?Q?zIzNjhaf7e7WaI95VU9B1v0oGuCs9Ji6d0IeCjaVSz1xOBMIfyUXUGF5cBW3?= =?us-ascii?Q?FVpAdpXJ9xJOQl3vXTIzIg6kc+Y4/Mpzt6Vx3qcTbGAOY0Ku19f8Z0iTrSip?= =?us-ascii?Q?VOky4bqIeZ8RWcVVuUw=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(376014)(1800799024)(7416014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Dec 2025 21:19:46.0942 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a1c10b0e-1b8c-42d1-9d2b-08de3c1fac0a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF00002327.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5962 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251215_131959_939403_CA5145CB X-CRM114-Status: GOOD ( 10.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Dec 15, 2025 at 06:48:18AM +0000, Ashish Mhetre wrote: > The Command Queue Virtualization (CMDQV) hardware is part of the > SMMUv3 implementation on NVIDIA Tegra SoCs. It assists in > virtualizing the command queue for the SMMU. > > Add a new device tree binding document for nvidia,tegra264-cmdqv. > > Also update the arm,smmu-v3 binding to include an optional nvidia,cmdqv > property. This property is a phandle to the CMDQV device node, allowing > the SMMU driver to associate with its corresponding CMDQV instance. > Restrict this property usage to Nvidia Tegra264 only. > > Reviewed-by: Rob Herring (Arm) > Signed-off-by: Ashish Mhetre Acked-by: Nicolin Chen