RE: [PATCH v2 0/9] accel: New driver for NXP's Neutron NPU

[Ioana Ciocoi Radulescu]

On Tuesday, March 24, 2026 at 6:40 PM, Tomeu Vizoso wrote:
> > >
> > > Hi Ioana,
> > >
> > > Looks like the userspace portion of the driver is closed source
> > > (libNeutronDriver.so)?
> > >
> > > https://github.com/nxp-imx/tflite-neutron-delegate/blob/lf-6.12.49_2.2.0/CMakeLists.txt

> > Hi Tomeu,
> >
> > Yes, it's closed for now. We do plan to publish the source code
> > on github, but I believe that's still a few months away.

> I think you may want to sync with your userspace team sooner rather than
> later, so you can comply with this requirement:
>
> https://docs.kernel.org/gpu/drm-uapi.html#open-source-userspace-requirements

Thanks for bringing this up, it helps us raise internally the priority for
the userspace side. In the meantime, I still hope to gather additional
feedback on the kernel driver.

> It could be good to also share firmware code with other firmware-mediated
> NPU drivers if possible, or at least the part of the rpmsg protocol that
> makes sense to share.
>
> You can see my submission for the Thames driver for a link to the firmware
> code.
>
> I would be happy to help consolidate code between this category of drivers
> if you want.

Thanks for the offer. We are considering our options, I'll get back once we
reach an internal decision.

Regards,
Ioana