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Wed, 20 May 2026 07:00:37 -0500 From: Rishikesh Donadkar To: , , CC: , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v13 02/17] dt-bindings: media: ti,j721e-csi2rx-shim: Support 32 dma chans Date: Wed, 20 May 2026 17:30:07 +0530 Message-ID: <20260520120022.539913-3-r-donadkar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260520120022.539913-1-r-donadkar@ti.com> References: <20260520120022.539913-1-r-donadkar@ti.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B06E:EE_|BY5PR10MB4147:EE_ X-MS-Office365-Filtering-Correlation-Id: d727475b-b38c-401c-5af9-08deb6677acb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|36860700016|82310400026|376014|1800799024|56012099003|22082099003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: t9MJBSSobSxRkI8MBC/5MBWm/fhZjktu5XuYnHXJRN9YbztOIEWCOgrTGmxqi0RNYIs5wel8XJD/cJaxsdi41x6X8J1GZR6CBHT0e9dwHZNTaHR/AYWdE4W1P3RZFXs6cpZuY3M66V7p5Y/LTIDbxxFmtERazymGEEI8UMma65TC3Kae3HvmabmScIfLuUk8hybdYAeT0vtdNBgHVmbJsW2Zb1jFz2rRuycATtB7JpZefiHlafUD5tBLqXHdt0CBBaO0KbjmcZJt7aHtWHOTYhOSwBoWR8duXBvnF8CjeLXT4vj39FmrbWgebPuTiD/dMrVTwGUVG4c6RlejYXJFeXhZFtLWhSxCn1nDrBzYrjpkI9VZ46RLfsIfPbnWRmjJ8AZkphP2fZZC+7wi07n2lBVi60SfeP33CjuOX0uh9/7+vESA2AsIlUNEcuR5ltH6 X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 May 2026 12:01:08.9917 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d727475b-b38c-401c-5af9-08deb6677acb X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.195];Helo=[flwvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B06E.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR10MB4147 From: Jai Luthra The CSI2RX SHIM IP can support 32x DMA channels. These can be used to split incoming "streams" of data on the CSI-RX port, distinguished by MIPI Virtual Channel (or Data Type), into different locations in memory. Actual number of DMA channels allocated to CSI-RX is dependent on the usecase, and can be modified using the K3 Resource Partitioning tool [1]. So set the minimum channels as 1 and maximum as 32. Link: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/10_00_07_04/exports/docs/linux/How_to_Guides/Host/K3_Resource_Partitioning_Tool.html [1] Link: https://www.ti.com/lit/pdf/spruiv7 Signed-off-by: Jai Luthra Reviewed-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart Reviewed-by: Rob Herring (Arm) Reviewed-by: Yemike Abhilash Chandra Signed-off-by: Rishikesh Donadkar --- .../bindings/media/ti,j721e-csi2rx-shim.yaml | 39 +++++++++++++++++-- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml index b9f033f2f3ce..bf62998b0445 100644 --- a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml +++ b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml @@ -20,11 +20,44 @@ properties: const: ti,j721e-csi2rx-shim dmas: - maxItems: 1 + minItems: 1 + maxItems: 32 dma-names: + minItems: 1 items: - const: rx0 + - const: rx1 + - const: rx2 + - const: rx3 + - const: rx4 + - const: rx5 + - const: rx6 + - const: rx7 + - const: rx8 + - const: rx9 + - const: rx10 + - const: rx11 + - const: rx12 + - const: rx13 + - const: rx14 + - const: rx15 + - const: rx16 + - const: rx17 + - const: rx18 + - const: rx19 + - const: rx20 + - const: rx21 + - const: rx22 + - const: rx23 + - const: rx24 + - const: rx25 + - const: rx26 + - const: rx27 + - const: rx28 + - const: rx29 + - const: rx30 + - const: rx31 reg: maxItems: 1 @@ -62,8 +95,8 @@ examples: ti_csi2rx0: ticsi2rx@4500000 { compatible = "ti,j721e-csi2rx-shim"; - dmas = <&main_udmap 0x4940>; - dma-names = "rx0"; + dmas = <&main_udmap 0x4940>, <&main_udmap 0x4941>; + dma-names = "rx0", "rx1"; reg = <0x4500000 0x1000>; power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>; #address-cells = <1>; -- 2.34.1