Re: [PATCH v5 0/5] Enable Remote GPIO over RPMSG on i.MX Platform

[Shenwei Wang]

Hi Arnaud,

> -----Original Message-----
> From: Arnaud POULIQUEN <arnaud.pouliquen@xxxxxxxxxxx>
> Sent: Wednesday, November 5, 2025 4:26 AM
> To: Peng Fan <peng.fan@xxxxxxx>; Shenwei Wang <shenwei.wang@xxxxxxx>;
> Bjorn Andersson <andersson@xxxxxxxxxx>; Mathieu Poirier
> <mathieu.poirier@xxxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof
> Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>; Shawn
> Guo <shawnguo@xxxxxxxxxx>; Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>;
> Jonathan Corbet <corbet@xxxxxxx>; Linus Walleij <linus.walleij@xxxxxxxxxx>;
> Bartosz Golaszewski <brgl@xxxxxxxx>
> Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>; Fabio Estevam
> <festevam@xxxxxxxxx>; linux-remoteproc@xxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; imx@xxxxxxxxxxxxxxx; linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-
> doc@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>; Randy Dunlap
> <rdunlap@xxxxxxxxxxxxx>; Andrew Lunn <andrew@xxxxxxx>; linux-
> gpio@xxxxxxxxxxxxxxx
> Subject: [EXT] Re: [PATCH v5 0/5] Enable Remote GPIO over RPMSG on i.MX
> Platform
> Hi,
> 
> On 11/5/25 02:12, Peng Fan wrote:
> > Hi Shenwei
> >
> >> Subject: [PATCH v5 0/5] Enable Remote GPIO over RPMSG on i.MX
> >> Platform
> >>
> >> Support the remote devices on the remote processor via the RPMSG bus
> >> on i.MX platform.
> >>
> >
> > I have not look into the details of new version, but before that, just
> > want to check, have we agreed on what Arnaud suggested?
> > or continue to proceed to be this as i.MX specific?
> 
> Thanks, Peng, for pointing this out. Regarding the V3 discussions, it seems that I
> am not the only one suggesting a generic driver.
> 

As I mentioned before, the only i.MX-specific part is the transport protocol over the RPMSG bus. 
In this v5 patches, we’ve included detailed documentation for the protocol in a separate file. Any 
platform that follows the same protocol should work right out of the box. 

If you spot anything that could be improved, please let me know!

Thanks,
Shenwei 

> Thanks,
> Arnaud
> 
> >
> > Thanks
> > Peng.