Re: [PATCH v5 net-next 04/10] dt-bindings: net: dsa: utilize base definitions for standard dsa switches

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Hi Arınç,
On Sat, Dec 10, 2022 at 07:24:42PM +0300, Arınç ÜNAL wrote:
> On 10.12.2022 06:30, Colin Foster wrote:
> > DSA a/Documentation/devicetree/bindings/net/dsa/dsa.yaml
> > +++ b/Documentation/devicetree/bindings/net/dsa/dsa.yaml
> > @@ -58,4 +58,26 @@ oneOf:
> >   additionalProperties: true
> > +$defs:
> > +  ethernet-ports:
> > +    description: A DSA switch without any extra port properties
> > +    $ref: '#/'
> > +
> > +    patternProperties:
> > +      "^(ethernet-)?ports$":
> > +        type: object
> > +        additionalProperties: false
> > +
> > +        properties:
> > +          '#address-cells':
> > +            const: 1
> > +          '#size-cells':
> > +            const: 0
> > +
> > +        patternProperties:
> > +          "^(ethernet-)?port@[0-9]+$":
> > +            description: Ethernet switch ports
> > +            $ref: dsa-port.yaml#
> > +            unevaluatedProperties: false
> 
> I've got moderate experience in json-schema but shouldn't you put 'type:
> object' here like you did for "^(ethernet-)?ports$"?

I can't say for sure, but adding "type: object" here and removing it
from mediatek,mt7530.yaml still causes the same issue I mention below.

Rob's initial suggestion for this patch set (which was basically the
entire implementation... many thanks again Rob) can be found here:
https://lore.kernel.org/netdev/20221104200212.GA2315642-robh@xxxxxxxxxx/

>From what I can tell, the omission of "type: object" here was
intentional. At the very least, it doesn't seem to have any effect on
warnings.

> 
> > +
> >   ...
> > diff --git a/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml b/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml
> > index 73b774eadd0b..748ef9983ce2 100644
> > --- a/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml
> > +++ b/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml
> > @@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
> >   title: Hirschmann Hellcreek TSN Switch Device Tree Bindings
> >   allOf:
> > -  - $ref: dsa.yaml#
> > +  - $ref: dsa.yaml#/$defs/ethernet-ports
> >   maintainers:
> >     - Andrew Lunn <andrew@xxxxxxx>
> > diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > index f2e9ff3f580b..20312f5d1944 100644
> > --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > @@ -157,9 +157,6 @@ patternProperties:
> >       patternProperties:
> >         "^(ethernet-)?port@[0-9]+$":
> >           type: object
> 
> This line was being removed on the previous version. Must be related to
> above.

Without the 'object' type here, I get the following warning:

Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml: patternProperties:^(ethernet-)?ports$:patternProperties:^(ethernet-)?port@[0-9]+$: 'anyOf' conditional failed, one must be fixed:
        'type' is a required property
        '$ref' is a required property
        hint: node schemas must have a type or $ref
        from schema $id: http://devicetree.org/meta-schemas/core.yaml#
./Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml: Error in referenced schema matching $id: http://devicetree.org/schemas/net/dsa/mediatek,mt7530.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema.json
/home/colin/src/work/linux_vsc/linux-imx/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml: ignoring, error in schema: patternProperties: ^(ethernet-)?ports$: patternProperties: ^(ethernet-)?port@[0-9]+$


I'm testing this now and I'm noticing something is going on with the
"ref: dsa-port.yaml"


Everything seems to work fine (in that I don't see any warnings) when I
have this diff:


diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
index 20312f5d1944..db0122020f98 100644
--- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yam
@@ -156,8 +156,7 @@ patternProperties:

     patternProperties:
       "^(ethernet-)?port@[0-9]+$":
-        type: object
-
+        $ref: dsa-port.yaml#
         properties:
           reg:
             description:
@@ -165,7 +164,6 @@ patternProperties:
               for user ports.

         allOf:
-          - $ref: dsa-port.yaml#
           - if:
               required: [ ethernet ]
             then:



This one has me [still] scratching my head...



> 
> > -        description: Ethernet switch ports
> > -
> > -        unevaluatedProperties: false
> >           properties:
> >             reg:
> 
> Arınç



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