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

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Message-ID: <e4b63a5e-c549-4c48-aa03-e81ad694b200@infradead.org>
Date: Wed, 29 Oct 2025 14:02:54 -0700
From: Randy Dunlap <rdunlap@...radead.org>
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-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



On 10/29/25 1:52 PM, Shenwei Wang wrote:
> 
> 
>> -----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.
> 

Yeah, maybe. That's sort of a last resort location for things
that don't have a better place.

> 
>>> 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

-- 
~Randy