Re: [PATCH v13 0/4] Enable Remote GPIO over RPMSG on i.MX Platform

Shenwei Wang
2026-04-23T19:12:01Z

> -----Original Message-----
> From: Andrew Lunn <andrew@lunn.ch>
> Sent: Thursday, April 23, 2026 8:54 AM
> To: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Shenwei Wang <shenwei.wang@nxp.com>; Linus Walleij
> <linusw@kernel.org>; Bartosz Golaszewski <brgl@kernel.org>; Jonathan Corbet
> <corbet@lwn.net>; Rob Herring <robh@kernel.org>; Krzysztof Kozlowski
> <krzk+dt@kernel.org>; Conor Dooley <conor+dt@kernel.org>; Bjorn Andersson
> <andersson@kernel.org>; Frank Li <frank.li@nxp.com>; Sascha Hauer
> <s.hauer@pengutronix.de>; Shuah Khan <skhan@linuxfoundation.org>; linux-
> gpio@vger.kernel.org; linux-doc@vger.kernel.org; linux-kernel@vger.kernel.org;
> Pengutronix Kernel Team <kernel@pengutronix.de>; Fabio Estevam
> <festevam@gmail.com>; Peng Fan <peng.fan@nxp.com>;
> devicetree@vger.kernel.org; linux-remoteproc@vger.kernel.org;
> imx@lists.linux.dev; linux-arm-kernel@lists.infradead.org; dl-linux-imx <linux-
> imx@nxp.com>
> Subject: [EXT] Re: [PATCH v13 0/4] Enable Remote GPIO over RPMSG on i.MX
> Platform
>
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> On Thu, Apr 23, 2026 at 06:53:12AM -0600, Mathieu Poirier wrote:
> > Once again Andrew Lunn was left out.
> >
> > On Wed, 22 Apr 2026 at 15:29, Shenwei Wang <shenwei.wang@nxp.com>
> wrote:
> > >
> > > Support the remote devices on the remote processor via the RPMSG bus
> > > on i.MX platform.
> > >
> > > Changes in v13:
> > > - drop the support for legacy NXP firmware.
> > > - remove the fixed_up hooks from the rpmsg gpio driver.
> > > - code cleanup.
>
> That looks like a step forward. Now we don't care about legacy NXP firmware, it
> makes it easier to make bigger changes, like use the messages format from gpio-
> virtio.
>

The implementation adopts the gpio‑virtio design, including its commands, parameters, and error codes.

Shenwei

> Andrew