On Fri, Oct 10, 2025 at 12:58:38AM +0200, Andrew Lunn wrote: > On Thu, Oct 09, 2025 at 05:27:15PM -0500, 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. > > I've not seen the discussion on earlier versions of this patchset, so > i might be asking something already asked and answered. Sorry if i am. > > Is there anything IMX specific in here? This appears to be the first > RPMSG GPIO driver. Do we have the opportunity here to define a > protocol for all future RPMSG GPIO drivers, which any/all vendors > should follow, so we don't have lots of different implementations of > basically they same thing? So this would become gpio-rpmsg.c and a > Document somewhere describing the protocol? >
I haven't looked at this patchset yet but I think Andrew's proposal has merit. > Andrew
