linux-kernel - Re: [PATCH v5 4/5] gpio: imx-rpmsg: add imx-rpmsg GPIO driver

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Message-ID: <aQxYU+QN+8hLZC7n@shlinux89>
Date: Thu, 6 Nov 2025 16:12:03 +0800
From: Peng Fan <peng.fan@....nxp.com>
To: Shenwei Wang <shenwei.wang@....com>
Cc: 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>,
	Jonathan Corbet <corbet@....net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>,
	linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-imx@....com, Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH v5 4/5] gpio: imx-rpmsg: add imx-rpmsg GPIO driver

Hi Shenwei,

On Tue, Nov 04, 2025 at 02:33:14PM -0600, Shenwei Wang wrote:
>On i.MX SoCs, the system may include two processors:
>	- An MCU running an RTOS
>	- An MPU running Linux
>
>These processors communicate via the RPMSG protocol.
>The driver implements the standard GPIO interface, allowing
>the Linux side to control GPIO controllers which reside in
>the remote processor via RPMSG protocol.
>
>Cc: Bartosz Golaszewski <brgl@...ev.pl>
>Cc: Andrew Lunn <andrew@...n.ch>
>Signed-off-by: Shenwei Wang <shenwei.wang@....com>
>---
> drivers/gpio/Kconfig          |  17 ++
> drivers/gpio/Makefile         |   1 +
> drivers/gpio/gpio-imx-rpmsg.c | 475 ++++++++++++++++++++++++++++++++++

The patch looks good to me, but since the protocol is already generic
enough, I would prefer to drop "imx" in this patch.

Thanks,
Peng