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Mon, 15 Dec 2025 13:21:20 -0800 Date: Mon, 15 Dec 2025 13:21:19 -0800 From: Nicolin Chen To: Ashish Mhetre CC: , , , , , , , , , , , , , , Subject: Re: [PATCH V7 4/4] arm64: dts: nvidia: Add nodes for CMDQV Message-ID: References: <20251215064819.3345361-1-amhetre@nvidia.com> <20251215064819.3345361-5-amhetre@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251215064819.3345361-5-amhetre@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002321:EE_|DS0PR12MB8199:EE_ X-MS-Office365-Filtering-Correlation-Id: 9419cf90-fa46-4267-e2fa-08de3c1fee84 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?NqjuavN4p+gVb8JxCL6+JbRF2plF9XWnM0XqAD3MS5kYVl5sH2s0sfAqG7+7?= =?us-ascii?Q?gL14SR9QCERh4WrkSlv0MGzthe3CWacgNnqX4GmR0+y1t1LfEx4oNCw4D/Q1?= =?us-ascii?Q?ttBKpix8+jdcmK4Adp3Xu2d+VMN0KkC3rzSZaP/4L9Iq/84/BVpmLUv2lAJ4?= =?us-ascii?Q?subRnTR+RPsPlHN/nm1RFWaNkPOjL+PcneeWJax3gZhUsHorHYxRGqGtWioL?= =?us-ascii?Q?8FNVMcffn1JsEBtv30tZ9BoBT11FDza5F13CPqlxbCXUdrRCNFhB8erZv7yd?= =?us-ascii?Q?sGV+UlL6zW73BNToKHHMOhaw5GwJYeGW6UEImv4U/f7LTM7zbYRWp4r9KEMV?= =?us-ascii?Q?cwJsTljW/GbIW8dLFUc4k8m4RIi6L4+1K/zNFND8E8t7b5VhP0gePxirveym?= =?us-ascii?Q?5l01n4TACilARkXy9Vkn+c+jzVr817EDtJt6PEq3P/htP/PbPd9siDhBgCY3?= =?us-ascii?Q?QlW8be42cusw0WMfeObwjFpvhJ+ydTnInNKlTtSxK6P7FR0lCpCwzPg+8udv?= =?us-ascii?Q?9kF6bJYeTBGx8zM687eQ04gSdHzoL2fr/2NuYbeX3I+cQC+sosZJ4+5PHVbI?= =?us-ascii?Q?ye73wKnNS+bdjI0vgS2Jl5qUxE97wp+9UICmQebdsGRui/mjcEmA69PbZdKo?= =?us-ascii?Q?5z7t3hdjZEm88h7sm8vyz0wTe4Jax7kDhn8Ayh+Of7llmrL7+4Fpyr6k+BSO?= =?us-ascii?Q?tVhXPKiP+iyM6UyqmUorXLOzsDC67ISKPy8MMZwYJsT3tAygsxd0+tBjOiRp?= =?us-ascii?Q?6Bkf6cyTbgPykxZURm8qfMpg+Bn9Cf9gYlReyu6oND3XpndXcx2nS/QmZnRK?= =?us-ascii?Q?3ePpsY4lYJJ3vh4BUCzBD7Q0yrDorSfkTHWjm8AdfzeiJaOZahA5BYfg89q7?= =?us-ascii?Q?Z9DvJKZYPOUmfNhHNHyYSpQblCc/0q/ixmU4LY6vLhUu3tMmhfkMXpfycBPW?= =?us-ascii?Q?ecugOmugnKVXA4JdW8w/XNoar+uUJhXFsnCSOj28BM85bCUHygSl1/SEBv/G?= =?us-ascii?Q?Kw/Ld+LMEDHxAJfAodHi3/+zWwIDnLhvEYDlsFQf8c/3yslPORZj6Gn2IHVG?= =?us-ascii?Q?4S7w1sqxzZGCLkRWcHAXNQqgupfX9loIB3MxbMkkcGYFZYbPb1JIdBr58gk3?= =?us-ascii?Q?xn/+f7G3B/oUHnPCK4CZTcQ0UTlOB5lvyScdekIEtnBgn+l8iIs69EEYQAnI?= =?us-ascii?Q?OueFQ4OqI1MxeylDTJzirs+FWtk62iMsXxQ5V3TwTqq6SMR2uDqANyhhAUIY?= =?us-ascii?Q?AcsYhTcYK2+kE1UmRLkbA3fWlmGuUpTldT6q+oRnq3DE/Q/D/UDW+wK8AzCs?= =?us-ascii?Q?LjL6EgJG7vOKE68MTgcYY5wWUGcAEurcM+XLE6PvmkAs1NRN+93rM9Odb+eA?= =?us-ascii?Q?XkdrkTgoTluRlkKzHvzbbvJQVo+MQ4FJR0ZE0icPn4pXjb4mI+c2u8pZ3zi6?= =?us-ascii?Q?nUyh5JeoVYdN+ZGARgdjnqxgVFEdTya7wiT5ACsCHA7kpDnupolIN6ITqwc6?= =?us-ascii?Q?5bEk41IWgU43OFroNgcrQYWRDRQNTe3lMptC778mZBm+XS4i/TappZuti4X0?= =?us-ascii?Q?3eZIm0Vf+xdhUjBRoDw=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 21:21:37.6233 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9419cf90-fa46-4267-e2fa-08de3c1fee84 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: SJ1PEPF00002321.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8199 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251215_132146_571069_67850DFE X-CRM114-Status: UNSURE ( 9.95 ) X-CRM114-Notice: Please train this message. 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 06:48:19AM +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. > > Update SMMU compatible strings to use nvidia,tegra264-smmu to enable > CMDQV support. Add device tree nodes for the CMDQV hardware and enable > them on the tegra264-p3834 platform where SMMUs are enabled. Each SMMU > instance is paired with its corresponding CMDQV instance via the > nvidia,cmdqv property. > > Signed-off-by: Ashish Mhetre Acked-by: Nicolin Chen