Re: [PATCH 2/3] dt-bindings: spi: Add DT schema for Tegra SPIDEV controller

[Mark Brown]

On Mon, Mar 31, 2025 at 01:34:21PM +0100, Jon Hunter wrote:
> On 27/03/2025 15:33, Mark Brown wrote:
> > On Wed, Mar 26, 2025 at 12:16:53PM +0000, Jon Hunter wrote:

> > > That's definitely what we do today, modify the kernel directly to achieve
> > > what we need. I am trying to avoid carrying too many out of tree patches for
> > > stuff like this and have something in the kernel that works by default. This
> > > is even more important for 3rd party Linux distros that will not accept
> > > non-upstream code.

> > Overlays should work well for that case too!

> If you mean device-tree overlays, I don't see how that will work today.
> Unless we are to use one of the existing compatible strings, but that feels
> wrong because we are not using any of those devices and like I mentioned,
> just using 'spidev' alone in device-tree does not work with the latest
> kernels.

Why would you need to use a compatible string for anything?  I'd expect
the overlay to add the entire new device, compatible and all.

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