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Tue, 17 Jan 2023 07:42:16 -0600 Received: from xhdipdslab41.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 17 Jan 2023 07:42:09 -0600 From: Nipun Gupta To: , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , Nipun Gupta Subject: [PATCH 03/19] dt-bindings: bus: add CDX bus controller device tree bindings Date: Tue, 17 Jan 2023 19:11:35 +0530 Message-ID: <20230117134139.1298-4-nipun.gupta@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230117134139.1298-1-nipun.gupta@amd.com> References: <20230117134139.1298-1-nipun.gupta@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT046:EE_|DM4PR12MB5039:EE_ X-MS-Office365-Filtering-Correlation-Id: 71855bec-2f7b-491e-abb6-08daf890a67e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(346002)(39860400002)(396003)(136003)(376002)(451199015)(36840700001)(40470700004)(46966006)(36756003)(82310400005)(86362001)(4326008)(186003)(8676002)(26005)(426003)(70206006)(41300700001)(47076005)(70586007)(2616005)(316002)(921005)(1076003)(6666004)(54906003)(40480700001)(478600001)(110136005)(356005)(44832011)(40460700003)(2906002)(7416002)(81166007)(966005)(82740400003)(336012)(83380400001)(36860700001)(5660300002)(8936002)(83996005)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jan 2023 13:42:17.8176 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 71855bec-2f7b-491e-abb6-08daf890a67e 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT046.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5039 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Add device tree bindings for CDX bus controller. Signed-off-by: Nipun Gupta --- .../bindings/bus/xlnx,cdxbus-controller.yaml | 68 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/xlnx,cdxbus-controller.yaml diff --git a/Documentation/devicetree/bindings/bus/xlnx,cdxbus-controller.yaml b/Documentation/devicetree/bindings/bus/xlnx,cdxbus-controller.yaml new file mode 100644 index 000000000000..b2f186864021 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/xlnx,cdxbus-controller.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/xlnx,cdxbus-controller.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AMD CDX bus controller + +description: | + CDX bus controller for AMD devices is implemented to dynamically + detect CDX bus and devices on these bus using the firmware. + The CDX bus manages multiple FPGA based hardware devices, which + can support network, crypto or any other specialized type of + devices. These FPGA based devices can be added/modified dynamically + on run-time. + + All devices on the CDX bus will have a unique streamid (for IOMMU) + and a unique device ID (for MSI) corresponding to a requestor ID + (one to one associated with the device). The streamid and deviceid + are used to configure SMMU and GIC-ITS respectively. + + iommu-map property is used to define the set of stream ids + corresponding to each device and the associated IOMMU. + + The MSI writes are accompanied by sideband data (Device ID). + The msi-map property is used to associate the devices with the + device ID as well as the associated ITS controller. + + rproc property (xlnx,rproc) is used to identify the remote processor + with which APU (Application Processor Unit) interacts to find out + the bus and device configuration. + +maintainers: + - Nipun Gupta + - Nikhil Agarwal + +properties: + compatible: + const: xlnx,cdxbus-controller + + iommu-map: true + + msi-map: true + + xlnx,rproc: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the remoteproc_r5 rproc node using which APU interacts + with remote processor. + +required: + - compatible + - iommu-map + - msi-map + - xlnx,rproc + +additionalProperties: false + +examples: + - | + cdxbus-controller { + compatible = "xlnx,cdxbus-controller"; + /* define map for RIDs 250-259 */ + iommu-map = <250 &smmu 250 10>; + /* define msi map for RIDs 250-259 */ + msi-map = <250 &its 250 10>; + xlnx,rproc = <&remoteproc_r5>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 25c76cf27f21..b43242546b17 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -966,6 +966,7 @@ AMD CDX BUS DRIVER M: Nipun Gupta M: Nikhil Agarwal S: Maintained +F: Documentation/devicetree/bindings/bus/xlnx,cdxbus-controller.yaml F: drivers/bus/cdx/* F: include/linux/cdx/*