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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: kSFyBjGOjSp0zRHrLCacSI1GEEUu/WMoULfAKyMqe9GSy3dkBuGyCej1z5INmaM/V0rE9l+ObyOWIvam+7WhgDKEPhtaZ9Iq7843uOJANsDCFG7dsrTUZmhzvf6FVE2nBrsQgn7g7FIaoJa+LrOITtLxOYaCSrILALvkDzL+/x/AYxgiJYY2F8tKa/WX/sq4rKxrCQkJQPWf9HdvlOw3uGScHS6bQZKEE5PB5ec0dGat2BX+zRF3PtNWxwWT80vbd6VAoxjjSWf8mcNQg92bv2Wra1bm02Rx72+I91hCtO2FHhwMuvY3+yNOxRlRsAz4BWtoaPGXm+otMYSoPJ4xhZF8vikONladCDDdq9PY5MpIf5IJdFyse6JXdvgNab8DLs61y2Lq9Osq8W2W0wMRPfM8P8HQKmqJAwxKmvr9+uWDp2Rs2CiOxfpTwGlFc4M+ X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2026 10:52:40.3868 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 121aed2b-51aa-4850-64e2-08defc4da896 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB4C.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4179 From: Anirudha Sarangi Add a device tree binding schema for the Xilinx Versal NET SMMU CSR (Control and Status Register) interrupt controller. The SMMU CSR block acts as a vendor-specific interrupt controller in front of the ARM SMMUv3, providing registers to enable and clear standard SMMU interrupts such as EVENTQ, CMDQ_SYNC, GERROR and PRIQ. Interrupts must be acknowledged in this block before being forwarded to the parent interrupt controller (e.g. GIC). Signed-off-by: Anirudha Sarangi Co-developed-by: Tushar Nimkar Signed-off-by: Tushar Nimkar --- .../xlnx,versal-net-smmu-csr.yaml | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/xlnx,versal-net-smmu-csr.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/xlnx,versal-net-smmu-csr.yaml b/Documentation/devicetree/bindings/interrupt-controller/xlnx,versal-net-smmu-csr.yaml new file mode 100644 index 000000000000..3387deabb5be --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/xlnx,versal-net-smmu-csr.yaml @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/xlnx,versal-net-smmu-csr.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx Versal NET SMMU CSR Interrupt Controller + +maintainers: + - Anirudha Sarangi + - Tushar Nimkar + +description: | + The Versal NET platform includes a Xilinx-specific SMMU CSR (Control and + Status Register) block that acts as an intermediate interrupt controller + for ARM SMMUv3. + + The block provides registers to enable, disable and clear the + standard SMMUv3 interrupt sources (EVENTQ, CMDQ_SYNC, GERROR and PRIQ) + before forwarding them to the parent interrupt controller, + typically a GIC. + + The controller receives one parent interrupt and demultiplexes CSR + status bits into the following child interrupt identifiers + 0 - EVENTQ + 1 - CMDQ_SYNC + 2 - GERROR (GLOBAL) + 3 - PRIQ + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +properties: + compatible: + const: xlnx,versal-net-smmu-csr + + reg: + maxItems: 1 + + interrupt-controller: true + + "#interrupt-cells": + const: 1 + description: | + Single cell containing the child interrupt identifier + 0 - EVENTQ + 1 - CMDQ_SYNC + 2 - GERROR (GLOBAL) + 3 - PRIQ + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupt-controller + - "#interrupt-cells" + - interrupts + +additionalProperties: false + +examples: + - | + #include + #include + + iommu@ec000000 { + compatible = "arm,smmu-v3"; + reg = <0xec000000 0x40000>; + #iommu-cells = <1>; + dma-coherent; + interrupt-names = "eventq", "gerror", "priq"; + interrupt-parent = <&smmu_irq_csr>; + interrupts = <0>, <2>, <3>; + }; + + smmu_irq_csr: interrupt-controller@eca10000 { + compatible = "xlnx,versal-net-smmu-csr"; + reg = <0xeca10000 0x1000>; + interrupt-controller; + #interrupt-cells = <1>; + interrupt-parent = <&gic>; + interrupts = ; + }; -- 2.34.1