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Tue, 12 Dec 2023 17:04:16 -0600 From: Tanmay Shah To: , , , , , CC: , , , Tanmay Shah Subject: [PATCH v2] dt-bindings: mailbox: add Versal IPI bindings Date: Tue, 12 Dec 2023 15:03:53 -0800 Message-ID: <20231212230353.888714-1-tanmay.shah@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D4:EE_|DS0PR12MB7678:EE_ X-MS-Office365-Filtering-Correlation-Id: a51a0163-f11a-4e2a-05cc-08dbfb66ab8d 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:(13230031)(4636009)(396003)(39860400002)(136003)(376002)(346002)(230922051799003)(1800799012)(82310400011)(64100799003)(451199024)(186009)(40470700004)(46966006)(36840700001)(6666004)(2906002)(6636002)(70206006)(54906003)(44832011)(356005)(81166007)(36756003)(86362001)(8676002)(4326008)(15650500001)(8936002)(316002)(5660300002)(40480700001)(478600001)(966005)(70586007)(110136005)(40460700003)(1076003)(36860700001)(82740400003)(41300700001)(26005)(336012)(426003)(83380400001)(47076005)(2616005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Dec 2023 23:04:18.5345 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a51a0163-f11a-4e2a-05cc-08dbfb66ab8d 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: CY4PEPF0000E9D4.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7678 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231212_150434_656313_4ECC6256 X-CRM114-Status: GOOD ( 13.80 ) 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 Add documentation for AMD-Xilinx Versal platform Inter Processor Interrupt controller. Versal IPI controller contains buffer-less IPI which do not have buffers for message passing. For such IPI channels message buffers are not expected and only notification to/from remote agent is expected. Signed-off-by: Tanmay Shah --- Changes in v2: - Add versal bindings to existing bindings doc instead of separate file. - Sort required list same as properties list - Add minimum and maximum range for xlnx,ipi-id vendor property - Move vendor property last in the list - Fix description of child node reg property for versal bindings - Change commit text depends on: https://lore.kernel.org/linux-arm-kernel/79f65b96-9015-41c4-b4ee-a82526c9eefc@linaro.org/T/#meeacc5c57a9610b19758d313e5b2d17ab470f646 .../mailbox/xlnx,zynqmp-ipi-mailbox.yaml | 172 ++++++++++++++---- 1 file changed, 138 insertions(+), 34 deletions(-) base-commit: abb240f7a2bd14567ab53e602db562bb683391e6 prerequisite-patch-id: 70017c8eaded5fc85749995b9cf093c6c625fab3 diff --git a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml index 8b15a0532120..95146adb9631 100644 --- a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml +++ b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml @@ -8,11 +8,11 @@ title: Xilinx IPI(Inter Processor Interrupt) mailbox controller description: | The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage - messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI - agent owns registers used for notification and buffers for message. + messaging between two Xilinx Zynq UltraScale+ MPSoC and Versal IPI agents. + Each IPI agent owns registers used for notification and buffers for message. +-------------------------------------+ - | Xilinx ZynqMP IPI Controller | + | Xilinx IPI Controller | +-------------------------------------+ +--------------------------------------------------+ TF-A | | @@ -37,15 +37,13 @@ maintainers: properties: compatible: - const: xlnx,zynqmp-ipi-mailbox + enum: + - xlnx,zynqmp-ipi-mailbox + - xlnx,versal-ipi-mailbox method: description: | The method of calling the PM-API firmware layer. - Permitted values are. - - "smc" : SMC #0, following the SMCCC - - "hvc" : HVC #0, following the SMCCC - $ref: /schemas/types.yaml#/definitions/string enum: - smc @@ -58,16 +56,26 @@ properties: '#size-cells': const: 2 - xlnx,ipi-id: - description: | - Remote Xilinx IPI agent ID of which the mailbox is connected to. - $ref: /schemas/types.yaml#/definitions/uint32 + reg: + minItems: 1 + maxItems: 2 + + reg-names: + minItems: 1 + maxItems: 2 interrupts: maxItems: 1 ranges: true + xlnx,ipi-id: + description: | + Remote Xilinx IPI agent ID of which the mailbox is connected to. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 64 + patternProperties: '^mailbox@[0-9a-f]+$': description: Internal ipi mailbox node @@ -76,57 +84,116 @@ patternProperties: properties: compatible: - const: xlnx,zynqmp-ipi-dest-mailbox + enum: + - xlnx,zynqmp-ipi-dest-mailbox + - xlnx,versal-ipi-dest-mailbox - xlnx,ipi-id: - description: - Remote Xilinx IPI agent ID of which the mailbox is connected to. - $ref: /schemas/types.yaml#/definitions/uint32 + reg: + minItems: 1 + maxItems: 4 + + reg-names: + minItems: 1 + maxItems: 4 '#mbox-cells': const: 1 description: It contains tx(0) or rx(1) channel IPI id number. - reg: - maxItems: 4 - - reg-names: - items: - - const: local_request_region - - const: local_response_region - - const: remote_request_region - - const: remote_response_region + xlnx,ipi-id: + description: + Remote Xilinx IPI agent ID of which the mailbox is connected to. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 64 required: - compatible - reg - reg-names - "#mbox-cells" - -additionalProperties: false - + - xlnx,ipi-id + + allOf: + - if: + properties: + compatible: + contains: + enum: + - xlnx,zynqmp-ipi-dest-mailbox + then: + properties: + reg: + items: + - description: Host agent request message buffer + - description: Host agent response message buffer + - description: Remote agent request message buffer + - description: Remote agent response message buffer + + reg-names: + items: + - const: local_request_region + - const: local_response_region + - const: remote_request_region + - const: remote_response_region + else: + properties: + reg: + minItems: 1 + items: + - description: Remote IPI agent control register + - description: Remote IPI agent optional message buffer + + reg-names: + minItems: 1 + items: + - const: ctrl + - const: msg required: - compatible - - interrupts - '#address-cells' - '#size-cells' + - interrupts - xlnx,ipi-id +allOf: + - if: + properties: + compatible: + contains: + enum: + - xlnx,versal-ipi-mailbox + then: + properties: + reg: + items: + - description: Host IPI agent control registers + - description: Host IPI agent optional message buffers + + reg-names: + items: + - const: ctrl + - const: msg + + required: + - reg + - reg-names + +additionalProperties: false + + examples: - | #include - amba { - #address-cells = <0x2>; - #size-cells = <0x2>; + bus { zynqmp-mailbox { compatible = "xlnx,zynqmp-ipi-mailbox"; interrupts = ; xlnx,ipi-id = <0>; #address-cells = <2>; #size-cells = <2>; - ranges; mailbox: mailbox@ff9905c0 { compatible = "xlnx,zynqmp-ipi-dest-mailbox"; @@ -144,4 +211,41 @@ examples: }; }; + - | + #include + + bus { + #address-cells = <2>; + #size-cells = <2>; + zynqmp-mailbox@ff300000 { + compatible = "xlnx,versal-ipi-mailbox"; + interrupts = ; + #address-cells = <2>; + #size-cells = <2>; + reg = <0x0 0xff300000 0x0 0x1000>, + <0x0 0xff990000 0x0 0x1ff>; + reg-names = "ctrl", "msg"; + xlnx,ipi-id = <0>; + ranges; + + /* buffered IPI */ + mailbox@ff340000 { + compatible = "xlnx,versal-ipi-dest-mailbox"; + reg = <0x0 0xff340000 0x0 0x1000>, + <0x0 0xff990400 0x0 0x1ff>; + reg-names = "ctrl", "msg"; + #mbox-cells = <1>; + xlnx,ipi-id = <4>; + }; + + /* bufferless IPI */ + mailbox@ff370000 { + compatible = "xlnx,versal-ipi-dest-mailbox"; + reg = <0x0 0xff370000 0x0 0x1000>; + reg-names = "ctrl"; + #mbox-cells = <1>; + xlnx,ipi-id = <7>; + }; + }; + }; ...