Re: [PATCH v2 2/5] dt-bindings: mtd: spi-nor: Allow external properties

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Hi Rob,

robh@xxxxxxxxxx wrote on Wed, 1 Dec 2021 18:05:41 -0600:

> On Fri, Nov 26, 2021 at 05:34:47PM +0100, Miquel Raynal wrote:
> > Setting "additionalProperties: false" will refuse any generic SPI
> > property while they should be of course authorized. In practice it looks
> > like many people used compatibles different than "jedec,spi-nor" in
> > order to workaround this limitation because otherwise no SPI property
> > could be used in the examples. Use "unevaluatedProperties: false"
> > instead to allow defined properties to be used. It is likely that at the
> > time of the conversion to yaml of the jedec file, the unevaluated
> > keyword was not yet introduced.
> > 
> > Fixes: 3ff9ee2a8890 ("dt-bindings: mtd: spi-nor: Convert to DT schema format")
> > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
> > index ed590d7c6e37..81be0620b264 100644
> > --- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
> > +++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
> > @@ -88,7 +88,7 @@ patternProperties:
> >    "^otp(-[0-9]+)?$":
> >      type: object
> >  
> > -additionalProperties: false
> > +unevaluatedProperties: false  
> 
> This has no effect unless you have referenced some other schema here. 
> The series I referenced will solve what your trying to solve I think.

Maybe this is not the right fix indeed, but my understanding of json
reaches its bounds here.

Without this change, any example in this file that references a
spi-controller.yaml property (which is correctly defined) will throw an
error. The fact is, all the examples out there with a spi-nor flash
using the jedec,spi-nor compatible *cannot* contain any
spi-controller.yaml property, otherwise the tooling errors out. This is
a real issue.

I will give Pratyush's series a try.

Thanks,
Miquèl



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