linux-kernel - Re: [PATCH v4 3/5] docs: admin-guide: gpio: rpmsg: gpio over rpmsg bus

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Message-ID:
 <PAXPR04MB918593CC07C246CADA458E4689FAA@PAXPR04MB9185.eurprd04.prod.outlook.com>
Date: Wed, 29 Oct 2025 20:52:20 +0000
From: Shenwei Wang <shenwei.wang@....com>
To: Randy Dunlap <rdunlap@...radead.org>, Linus Walleij
	<linus.walleij@...aro.org>, Bartosz Golaszewski <brgl@...ev.pl>, Jonathan
 Corbet <corbet@....net>, Bjorn Andersson <andersson@...nel.org>, Mathieu
 Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>
CC: Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam
	<festevam@...il.com>, Peng Fan <peng.fan@....com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>, dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH v4 3/5] docs: admin-guide: gpio: rpmsg: gpio over rpmsg
 bus



> -----Original Message-----
> From: Randy Dunlap <rdunlap@...radead.org>
> Sent: Wednesday, October 29, 2025 3:47 PM
> To: Shenwei Wang <shenwei.wang@....com>; Linus Walleij
> <linus.walleij@...aro.org>; Bartosz Golaszewski <brgl@...ev.pl>; Jonathan
> Corbet <corbet@....net>; Bjorn Andersson <andersson@...nel.org>; Mathieu
> Poirier <mathieu.poirier@...aro.org>; Rob Herring <robh@...nel.org>; Krzysztof
> Kozlowski <krzk+dt@...nel.org>; Conor Dooley <conor+dt@...nel.org>; Shawn
> Guo <shawnguo@...nel.org>; Sascha Hauer <s.hauer@...gutronix.de>
> Cc: Pengutronix Kernel Team <kernel@...gutronix.de>; Fabio Estevam
> <festevam@...il.com>; Peng Fan <peng.fan@....com>; linux-
> gpio@...r.kernel.org; linux-doc@...r.kernel.org; linux-kernel@...r.kernel.org;
> linux-remoteproc@...r.kernel.org; devicetree@...r.kernel.org;
> imx@...ts.linux.dev; dl-linux-imx <linux-imx@....com>
> Subject: [EXT] Re: [PATCH v4 3/5] docs: admin-guide: gpio: rpmsg: gpio over
> rpmsg bus
> 
> Hi--
> 
> On 10/29/25 12:56 PM, Shenwei Wang wrote:
> > Describes the gpio rpmsg transport protocol over the rpmsg bus between
> > the cores.
> >
> > Signed-off-by: Shenwei Wang <shenwei.wang@....com>
> > ---
> >  Documentation/admin-guide/gpio/gpio-rpmsg.rst | 202 ++++++++++++++++++
> >  Documentation/admin-guide/gpio/index.rst      |   1 +
> >  2 files changed, 203 insertions(+)
> >  create mode 100644 Documentation/admin-guide/gpio/gpio-rpmsg.rst
> >
> 
> I don't think this should be in admin-guide/gpio/.
> How about in driver-api/gpio/?
> That may not be perfect either, but transport protocols are not typically admin
> material AFAIK.
> 

How about putting it in Documentation/staging directory?
I saw both remoteproc.rst and rpmsg.rst are in the directory.

Thanks,
Shenwei

> > diff --git a/Documentation/admin-guide/gpio/index.rst
> > b/Documentation/admin-guide/gpio/index.rst
> > index 712f379731cb..9c8f4441038a 100644
> > --- a/Documentation/admin-guide/gpio/index.rst
> > +++ b/Documentation/admin-guide/gpio/index.rst
> > @@ -9,6 +9,7 @@ GPIO
> >
> >      Character Device Userspace API <../../userspace-api/gpio/chardev>
> >      gpio-aggregator
> > +    gpio-rpmsg
> >      gpio-sim
> >      gpio-virtuser
> >      Obsolete APIs <obsolete>
> If someone thinks that it should be in admin-guide/,please explain why.
> 
> Thanks.
> --
> ~Randy