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Wed, 18 May 2022 12:46:23 -0700 Envelope-to: bjorn.andersson@linaro.org, mathieu.poirier@linaro.org, robh+dt@kernel.org, krzk+dt@kernel.org, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Received: from [172.19.3.14] (port=40706 helo=xsjtanmays50.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1nrPcl-0004Ew-67; Wed, 18 May 2022 12:46:23 -0700 From: Tanmay Shah To: , , , , CC: , , , , Tanmay Shah Subject: [PATCH v5 1/6] dt-bindings: remoteproc: Add Xilinx RPU subsystem bindings Date: Wed, 18 May 2022 12:44:23 -0700 Message-ID: <20220518194426.3784095-2-tanmay.shah@xilinx.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220518194426.3784095-1-tanmay.shah@xilinx.com> References: <20220518194426.3784095-1-tanmay.shah@xilinx.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 41cfe5bb-b343-4f56-dda5-08da39071788 X-MS-TrafficTypeDiagnostic: MN2PR02MB6000:EE_ X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 May 2022 19:46:24.7808 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 41cfe5bb-b343-4f56-dda5-08da39071788 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT035.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR02MB6000 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Xilinx ZynqMP platform has dual-core ARM Cortex R5 Realtime Processing Unit(RPU) subsystem. This patch adds dt-bindings for RPU subsystem (cluster). Signed-off-by: Tanmay Shah --- Changes in v5: - Add constraints of the possible values of xlnx,cluster-mode property - fix description of power-domains property for r5 core - Remove reg, address-cells and size-cells properties as it is not required - Fix description of mboxes property - Add description of each memory-region and remove old .txt binding link reference in the description Changes in v4: - Add memory-region, mboxes and mbox-names properties in example Changes in v3: - None .../bindings/remoteproc/xlnx,r5f-rproc.yaml | 128 ++++++++++++++++++ include/dt-bindings/power/xlnx-zynqmp-power.h | 6 + 2 files changed, 134 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/xlnx,r5f-rproc.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/xlnx,r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/xlnx,r5f-rproc.yaml new file mode 100644 index 000000000000..f1c58ade1dd7 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/xlnx,r5f-rproc.yaml @@ -0,0 +1,128 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/xlnx,r5f-rproc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx R5F processor subsystem + +maintainers: + - Ben Levinsky + - Tanmay Shah + +description: | + The Xilinx platforms include a pair of Cortex-R5F processors (RPU) for + real-time processing based on the Cortex-R5F processor core from ARM. + The Cortex-R5F processor implements the Arm v7-R architecture and includes a + floating-point unit that implements the Arm VFPv3 instruction set. + +properties: + compatible: + const: xlnx,zynqmp-r5fss + + xlnx,cluster-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2] + description: | + The RPU MPCore can operate in split mode(Dual-processor performance), Safety + lock-step mode(Both RPU cores execute the same code in lock-step, + clock-for-clock) or Single CPU mode (RPU core 0 can be held in reset while + core 1 runs normally). The processor does not support dynamic configuration. + Switching between modes is only permitted immediately after a processor reset. + If set to 1 then lockstep mode and if 0 then split mode. + If set to 2 then single CPU mode. When not defined, default will be lockstep mode. + +patternProperties: + "^r5f-[a-f0-9]+$": + type: object + description: | + The RPU is located in the Low Power Domain of the Processor Subsystem. + Each processor includes separate L1 instruction and data caches and + tightly coupled memories (TCM). System memory is cacheable, but the TCM + memory space is non-cacheable. + + Each RPU contains one 64KB memory and two 32KB memories that + are accessed via the TCM A and B port interfaces, for a total of 128KB + per processor. In lock-step mode, the processor has access to 256KB of + TCM memory. + + properties: + compatible: + const: xlnx,zynqmp-r5f + + power-domains: + description: RPU core PM domain specifier + maxItems: 1 + + mboxes: + items: + - description: mailbox channel to send data to RPU + - description: mailbox channel to receive data from RPU + minItems: 1 + + mbox-names: + items: + - const: tx + - const: rx + minItems: 1 + + sram: + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 1 + description: | + phandles to one or more reserved on-chip SRAM regions. Other than TCM, + the RPU can execute instructions and access data from, the OCM memory, + the main DDR memory, and other system memories. + + The regions should be defined as child nodes of the respective SRAM + node, and should be defined as per the generic bindings in, + Documentation/devicetree/bindings/sram/sram.yaml + + memory-region: + description: | + List of phandles to the reserved memory regions associated with the + remoteproc device. This is variable and describes the memories shared with + the remote processor (e.g. remoteproc firmware and carveouts, rpmsg + vrings, ...). This reserved memory region will be allocated on DDR memory. + minItems: 1 + items: + - description: region used for RPU firmware image section + - description: vdev buffer + - description: vring0 + - description: vring1 + additionalItems: true + + required: + - compatible + - power-domains + + unevaluatedProperties: false + +required: + - compatible + +additionalProperties: false + +examples: + - | + r5fss: r5fss { + compatible = "xlnx,zynqmp-r5fss"; + xlnx,cluster-mode = <1>; + + r5f-0 { + compatible = "xlnx,zynqmp-r5f"; + power-domains = <&zynqmp_firmware 0x7>; + memory-region = <&rproc_0_fw_image>, <&rpu0vdev0buffer>, <&rpu0vdev0vring0>, <&rpu0vdev0vring1>; + mboxes = <&ipi_mailbox_rpu0 0>, <&ipi_mailbox_rpu0 1>; + mbox-names = "tx", "rx"; + }; + + r5f-1 { + compatible = "xlnx,zynqmp-r5f"; + power-domains = <&zynqmp_firmware 0x8>; + memory-region = <&rproc_1_fw_image>, <&rpu1vdev0buffer>, <&rpu1vdev0vring0>, <&rpu1vdev0vring1>; + mboxes = <&ipi_mailbox_rpu1 0>, <&ipi_mailbox_rpu1 1>; + mbox-names = "tx", "rx"; + }; + }; +... diff --git a/include/dt-bindings/power/xlnx-zynqmp-power.h b/include/dt-bindings/power/xlnx-zynqmp-power.h index 0d9a412fd5e0..618024cbb20d 100644 --- a/include/dt-bindings/power/xlnx-zynqmp-power.h +++ b/include/dt-bindings/power/xlnx-zynqmp-power.h @@ -6,6 +6,12 @@ #ifndef _DT_BINDINGS_ZYNQMP_POWER_H #define _DT_BINDINGS_ZYNQMP_POWER_H +#define PD_RPU_0 7 +#define PD_RPU_1 8 +#define PD_R5_0_ATCM 15 +#define PD_R5_0_BTCM 16 +#define PD_R5_1_ATCM 17 +#define PD_R5_1_BTCM 18 #define PD_USB_0 22 #define PD_USB_1 23 #define PD_TTC_0 24 -- 2.25.1