[PATCH/RFC 2/6] dt-bindings: display: bridge: renesas,dw-hdmi: Convert binding to YAML
Maxime Ripard
maxime at cerno.tech
Mon Apr 6 17:04:59 UTC 2020
On Mon, Apr 06, 2020 at 02:32:47PM +0300, Laurent Pinchart wrote:
> > > > +
> > > > + clock-names:
> > > > + items:
> > > > + - const: iahb
> > > > + - const: isfr
> > > > +
> > > > + interrupts: true
> > > > +
> > > > + ports:
> > > > + type: object
> > > > + description: |
> > > > + This device has three video ports. Their connections are modelled using the
> > > > + OF graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> > > > + Each port shall have a single endpoint.
> > > > +
> > > > + properties:
> > > > + '#address-cells':
> > > > + const: 1
> > > > +
> > > > + '#size-cells':
> > > > + const: 0
> > > > +
> > > > + port at 0:
> > > > + type: object
> > > > + description: Parallel RGB input port
> > > > +
> > > > + port at 1:
> > > > + type: object
> > > > + description: HDMI output port
> > > > +
> > > > + port at 2:
> > > > + type: object
> > > > + description: Sound input port
> > > > +
> > > > + required:
> > > > + - port at 0
> > > > + - port at 1
> > > > + - port at 2
> > > > +
> > > > + additionalProperties: false
>
> Would it also make sense to use unevaluatedProperties here, and drop
> #address-cells and #size-cells above as they're already evaluated in
> synopsys,dw-hdmi.yaml ?
Yup :)
> > > > +
> > > > + power-domains:
> > > > + maxItems: 1
> > > > +
> > > > +required:
> > > > + - compatible
> > > > + - reg
> > > > + - clocks
> > > > + - clock-names
> > > > + - interrupts
> > > > + - ports
> > > > +
> > > > +additionalProperties: false
> > >
> > > In the case where you have some kind of generic schema and then a more
> > > specific one like you have here, unevaluatedProperties make more sense
> > > that additionalProperties.
> > >
> > > additionalProperties checks that there are no extra properties on the
> > > current schema, which is a problem here since you have to duplicate
> > > the entire list of properties found in the generic schema, while
> > > unevaluatedProperties checks that there are no extra properties in the
> > > entire set of all schemas that apply to this node.
> > >
> > > This way, you can just put what is different from the generic schema,
> > > and you don't have to keep it in sync.
> > >
> > > It's a feature that has been added in the spec of the schemas that
> > > went on right after the one we support in the tools, so for now the
> > > kernel meta-schemas only allows that property to be there (just like
> > > deprecated) but won't do anything.
> > >
> > > This should be fixed quite soon however, the library we depend on
> > > has started to work on that spec apparently.
> >
> > Should I postpone this series until support for unevaluatedProperties is
> > available, to be able to test this ?
>
> Also, to make sure I understand this correctly, does it mean I can drop
> "reg: true" and "interrupts: true" ?
Ditto :)
Maxime
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 228 bytes
Desc: not available
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20200406/b229eecb/attachment-0001.sig>
More information about the dri-devel
mailing list