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GET /api/patches/2196110/?format=api
{ "id": 2196110, "url": "http://patchwork.ozlabs.org/api/patches/2196110/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260212213656.662437-3-shenwei.wang@nxp.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260212213656.662437-3-shenwei.wang@nxp.com>", "list_archive_url": null, "date": "2026-02-12T21:36:54", "name": "[v8,2/4] dt-bindings: remoteproc: imx_rproc: Add \"rpmsg\" subnode support", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f8cef8778913ae823d1d7885b59f5c99868cd794", "submitter": { "id": 74153, "url": "http://patchwork.ozlabs.org/api/people/74153/?format=api", "name": "Shenwei Wang", "email": "shenwei.wang@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260212213656.662437-3-shenwei.wang@nxp.com/mbox/", "series": [ { "id": 492027, "url": "http://patchwork.ozlabs.org/api/series/492027/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=492027", "date": "2026-02-12T21:36:52", "name": "Enable Remote GPIO over RPMSG on i.MX Platform", "version": 8, "mbox": "http://patchwork.ozlabs.org/series/492027/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196110/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196110/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-31642-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-gpio@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ 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"DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=vHjn70swDdWLLv2zCNEtQPoHvvD+r5yGSKfMbd2+X74=;\n b=TJDb/xNzQZOCsr3Dz7t8LndJq07tGMzAP5FdGjekR9n4ewAi2MV0qlBATSzAxjEF/zHc/8c3x7PTTph/n78mQZfVRSv4QlIwv+AuDxF5+r4sXVvdlSijMQ8UmEoUnQYXKcTGBEV1NkF5nYYZWavLZZnINdHdUJuO/ytRJZW0C3tDBRtaMTNjv/2RF14PPaOY7t+awbUfnSOIcrHlG3gaETriM2qdJxnI3sjXiKSoRvNqDxKAbjnpTSyTonPEO/ZieUBK4Y+nVPhU6CqqAD09LrfA9H4kL1KpOU1qfyjVbAUmPXnt+vYK/58rKyQaUevDGkpgRvYB9MK/6svrOwb/xg==", "From": "Shenwei Wang <shenwei.wang@nxp.com>", "To": "Linus Walleij <linusw@kernel.org>,\n\tBartosz Golaszewski <brgl@kernel.org>,\n\tJonathan Corbet <corbet@lwn.net>,\n\tRob Herring <robh@kernel.org>,\n\tKrzysztof Kozlowski <krzk+dt@kernel.org>,\n\tConor Dooley <conor+dt@kernel.org>,\n\tBjorn Andersson <andersson@kernel.org>,\n\tMathieu Poirier <mathieu.poirier@linaro.org>,\n\tFrank Li <Frank.Li@nxp.com>,\n\tSascha Hauer <s.hauer@pengutronix.de>", "Cc": "Shuah Khan <skhan@linuxfoundation.org>,\n\tlinux-gpio@vger.kernel.org,\n\tlinux-doc@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tPengutronix Kernel Team <kernel@pengutronix.de>,\n\tFabio Estevam <festevam@gmail.com>,\n\tShenwei Wang <shenwei.wang@nxp.com>,\n\tPeng Fan <peng.fan@nxp.com>,\n\tdevicetree@vger.kernel.org,\n\tlinux-remoteproc@vger.kernel.org,\n\timx@lists.linux.dev,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-imx@nxp.com,\n\tarnaud.pouliquen@foss.st.com", "Subject": "[PATCH v8 2/4] dt-bindings: remoteproc: imx_rproc: Add \"rpmsg\"\n subnode support", "Date": "Thu, 12 Feb 2026 15:36:54 -0600", "Message-ID": "<20260212213656.662437-3-shenwei.wang@nxp.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260212213656.662437-1-shenwei.wang@nxp.com>", "References": "<20260212213656.662437-1-shenwei.wang@nxp.com>", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": 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"X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n efd93ad5-a254-40f6-c1fe-08de6a7efcb5", "X-MS-Exchange-CrossTenant-AuthSource": "PAXPR04MB9185.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "12 Feb 2026 21:37:57.2651\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "686ea1d3-bc2b-4c6f-a92c-d99c5c301635", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n dCS7zHLkyVHjJKorWXctkikQ9Qeb4KSouUrk5ogqP6cwe8wwFDog3+5ANbaaiC+J7QHpRI7z/x95qZdZ4qBCIA==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PA4PR04MB7936" }, "content": "Remote processors may announce multiple GPIO controllers over an RPMSG\nchannel. These GPIO controllers may require corresponding device tree\nnodes, especially when acting as providers, to supply phandles for their\nconsumers.\n\nDefine an RPMSG node to work as a container for a group of RPMSG channels\nunder the imx_rproc node. Each subnode within \"rpmsg\" represents an\nindividual RPMSG channel. The name of each subnode corresponds to the\nchannel name as defined by the remote processor.\n\nAll remote devices associated with a given channel are defined as child\nnodes under the corresponding channel node.\n\nSigned-off-by: Shenwei Wang <shenwei.wang@nxp.com>\n---\n .../devicetree/bindings/gpio/gpio-rpmsg.yaml | 55 +++++++++++++++++++\n .../bindings/remoteproc/fsl,imx-rproc.yaml | 53 ++++++++++++++++++\n 2 files changed, 108 insertions(+)\n create mode 100644 Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml", "diff": "diff --git a/Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml b/Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml\nnew file mode 100644\nindex 000000000000..6c78b6850321\n--- /dev/null\n+++ b/Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml\n@@ -0,0 +1,55 @@\n+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)\n+%YAML 1.2\n+---\n+$id: http://devicetree.org/schemas/gpio/gpio-rpmsg.yaml#\n+$schema: http://devicetree.org/meta-schemas/core.yaml#\n+\n+title: Generic RPMSG GPIO Controller\n+\n+maintainers:\n+ - Shenwei Wang <shenwei.wang@nxp.com>\n+\n+description:\n+ On an AMP platform, some GPIO controllers are exposed by the remote processor\n+ through the RPMSG bus. The RPMSG GPIO transport protocol defines the packet\n+ structure and communication flow between Linux and the remote firmware. Those\n+ controllers are managed via this transport protocol. For more details of the\n+ protocol, check the document below.\n+ Documentation/driver-api/gpio/gpio-rpmsg.rst\n+\n+properties:\n+ compatible:\n+ oneOf:\n+ - items:\n+ - enum:\n+ - fsl,rpmsg-gpio\n+ - const: rpmsg-gpio\n+ - const: rpmsg-gpio\n+\n+ reg:\n+ description:\n+ The reg property represents the index of the GPIO controllers. Since\n+ the driver manages controllers on a remote system, this index tells\n+ the remote system which controller to operate.\n+ maxItems: 1\n+\n+ \"#gpio-cells\":\n+ const: 2\n+\n+ gpio-controller: true\n+\n+ interrupt-controller: true\n+\n+ \"#interrupt-cells\":\n+ const: 2\n+\n+required:\n+ - compatible\n+ - reg\n+ - \"#gpio-cells\"\n+ - \"#interrupt-cells\"\n+\n+allOf:\n+ - $ref: /schemas/gpio/gpio.yaml#\n+\n+unevaluatedProperties: false\ndiff --git a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml\nindex ce8ec0119469..88281ffc18ca 100644\n--- a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml\n+++ b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc.yaml\n@@ -85,6 +85,34 @@ properties:\n This property is to specify the resource id of the remote processor in SoC\n which supports SCFW\n \n+ rpmsg:\n+ type: object\n+ additionalProperties: false\n+ description:\n+ Represents the RPMSG bus between Linux and the remote system. Contains\n+ a group of RPMSG channel devices running on the bus.\n+\n+ properties:\n+ rpmsg-io-channel:\n+ type: object\n+ additionalProperties: false\n+ properties:\n+ '#address-cells':\n+ const: 1\n+\n+ '#size-cells':\n+ const: 0\n+\n+ patternProperties:\n+ \"gpio@[0-9a-f]+$\":\n+ type: object\n+ $ref: /schemas/gpio/gpio-rpmsg.yaml#\n+ unevaluatedProperties: false\n+\n+ required:\n+ - '#address-cells'\n+ - '#size-cells'\n+\n required:\n - compatible\n \n@@ -147,5 +175,30 @@ examples:\n &mu 3 1>;\n memory-region = <&vdev0buffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>;\n syscon = <&src>;\n+\n+ rpmsg {\n+ rpmsg-io-channel {\n+ #address-cells = <1>;\n+ #size-cells = <0>;\n+\n+ gpio@0 {\n+ compatible = \"rpmsg-gpio\";\n+ reg = <0>;\n+ gpio-controller;\n+ #gpio-cells = <2>;\n+ #interrupt-cells = <2>;\n+ interrupt-controller;\n+ };\n+\n+ gpio@1 {\n+ compatible = \"rpmsg-gpio\";\n+ reg = <1>;\n+ gpio-controller;\n+ #gpio-cells = <2>;\n+ #interrupt-cells = <2>;\n+ interrupt-controller;\n+ };\n+ };\n+ };\n };\n ...\n", "prefixes": [ "v8", "2/4" ] }