linux-kernel - Re: [PATCH v7 1/4] dt-bindings: remoteproc: imx

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Message-ID:
 <PAXPR04MB9185556E1A3DD990697E721A8963A@PAXPR04MB9185.eurprd04.prod.outlook.com>
Date: Wed, 11 Feb 2026 17:26:06 +0000
From: Shenwei Wang <shenwei.wang@....com>
To: "Rob Herring (Arm)" <robh@...nel.org>
CC: Bartosz Golaszewski <brgl@...nel.org>, dl-linux-imx <linux-imx@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, Linus Walleij
	<linusw@...nel.org>, "arnaud.pouliquen@...s.st.com"
	<arnaud.pouliquen@...s.st.com>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>, Bjorn Andersson
	<andersson@...nel.org>, Pengutronix Kernel Team <kernel@...gutronix.de>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-remoteproc@...r.kernel.org"
	<linux-remoteproc@...r.kernel.org>, Peng Fan <peng.fan@....com>, Conor Dooley
	<conor+dt@...nel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>, Jonathan
 Corbet <corbet@....net>, Mathieu Poirier <mathieu.poirier@...aro.org>, Fabio
 Estevam <festevam@...il.com>, "linux-doc@...r.kernel.org"
	<linux-doc@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 1/4] dt-bindings: remoteproc: imx_rproc: Add "rpmsg"
 subnode support



> -----Original Message-----
> From: Rob Herring (Arm) <robh@...nel.org>
> Sent: Tuesday, February 10, 2026 2:48 PM
> To: Shenwei Wang <shenwei.wang@....com>
> Cc: Bartosz Golaszewski <brgl@...nel.org>; dl-linux-imx <linux-imx@....com>;
> devicetree@...r.kernel.org; Linus Walleij <linusw@...nel.org>;
> arnaud.pouliquen@...s.st.com; Krzysztof Kozlowski <krzk+dt@...nel.org>;
> Sascha Hauer <s.hauer@...gutronix.de>; Shawn Guo <shawnguo@...nel.org>;
> linux-gpio@...r.kernel.org; Bjorn Andersson <andersson@...nel.org>;
> Pengutronix Kernel Team <kernel@...gutronix.de>; linux-arm-
> kernel@...ts.infradead.org; linux-remoteproc@...r.kernel.org; Peng Fan
> <peng.fan@....com>; Conor Dooley <conor+dt@...nel.org>;
> imx@...ts.linux.dev; Jonathan Corbet <corbet@....net>; Mathieu Poirier
> <mathieu.poirier@...aro.org>; Fabio Estevam <festevam@...il.com>; linux-
> doc@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: [EXT] Re: [PATCH v7 1/4] dt-bindings: remoteproc: imx_rproc: Add
> "rpmsg" subnode support
> 
> On Tue, 10 Feb 2026 11:08:11 -0600, Shenwei Wang wrote:
> > Remote processors may announce multiple GPIO controllers over an RPMSG
> > channel. These GPIO controllers may require corresponding device tree
> > nodes, especially when acting as providers, to supply phandles for
> > their consumers.
> >
> > Define an RPMSG node to work as a container for a group of RPMSG
> > channels under the imx_rproc node. Each subnode within "rpmsg"
> > represents an individual RPMSG channel. The name of each subnode
> > corresponds to the channel name as defined by the remote processor.
> >
> > All remote devices associated with a given channel are defined as
> > child nodes under the corresponding channel node.
> >
> > Signed-off-by: Shenwei Wang <shenwei.wang@....com>
> > ---
> >  .../devicetree/bindings/gpio/gpio-rpmsg.yaml  | 55 +++++++++++++++++++
> >  .../bindings/remoteproc/fsl,imx-rproc.yaml    | 53 ++++++++++++++++++
> >  2 files changed, 108 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml
> >
> 
> My bot found errors running 'make dt_binding_check' on your patch:
> 
> yamllint warnings/errors:
> 
> dtschema/dtc warnings/errors:
> 
> 
> doc reference errors (make refcheckdocs):
> Warning: Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml references
> a file that doesn't exist: Documentation/driver-api/gpio/gpio-rpmsg.rst
> Documentation/devicetree/bindings/gpio/gpio-rpmsg.yaml:
> Documentation/driver-api/gpio/gpio-rpmsg.rst
> 

The .rst file mentioned in the description is included in this same patch set.

Thanks,
Shenwei

> See
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork
> .kernel.org%2Fproject%2Fdevicetree%2Fpatch%2F20260210170814.406883-2-
> shenwei.wang%40nxp.com&data=05%7C02%7Cshenwei.wang%40nxp.com%7C
> ec16fbf197124fe4a79408de68e5b709%7C686ea1d3bc2b4c6fa92cd99c5c301635
> %7C0%7C0%7C639063532995959644%7CUnknown%7CTWFpbGZsb3d8eyJFbXB
> 0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCI
> sIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=if3xgNzIUU4Abj9FiShAH8aJ9LU9S
> OcBUbKqAn%2FcUbw%3D&reserved=0
> 
> The base for the series is generally the latest rc1. A different dependency should
> be noted in *this* patch.
> 
> If you already ran 'make dt_binding_check' and didn't see the above error(s), then
> make sure 'yamllint' is installed and dt-schema is up to
> date:
> 
> pip3 install dtschema --upgrade
> 
> Please check and re-submit after running the above command yourself. Note that
> DT_SCHEMA_FILES can be set to your schema file to speed up checking your
> schema. However, it must be unset to test all examples with your schema.