Re: [PATCH v4 1/3] dt-bindings: chrome: Add ChromeOS fingerprint binding

[Stephen Boyd]

Quoting Rob Herring (2022-03-21 18:32:40)
> On Mon, Mar 21, 2022 at 12:10:57PM -0700, Stephen Boyd wrote:
> > Add a binding to describe the fingerprint processor found on Chromebooks
> > with a fingerprint sensor. Previously we've been describing this with
> > the google,cros-ec-spi binding but it lacks gpio and regulator control
> > used during firmware flashing.
>
> Then 'google,cros-ec-spi' should be a fallback?

How do I describe that in the schema without causing google,cros-ec.yaml
to jump in and complain that there are unknown properties? Do I need to
combine these two schemas and then have conditional properties?