Re: [PATCH v1 25/43] dt-bindings: ata: Add Cirrus EP93xx

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On Fri, Jun 02, 2023 at 08:57:37AM +0900, Damien Le Moal wrote:
> On 6/1/23 14:45, Nikita Shubin wrote:
> > Add YAML bindings for ep93xx SoC PATA.
> > 
> > Signed-off-by: Nikita Shubin <nikita.shubin@xxxxxxxxxxx>
> > ---
> > 
> > Notes:
> >     v0 -> v1:
> >     
> >     - renamed file to ep9312-pata
> 
> Looks OK to me but given that this is both for the cirrus,ep9315-pata and
> cirrus,ep9312-pata, wouldn't it be better to name the file
> cirrus,ep931x-pata.yaml ?

cirrus,ep9312-pata makes sense given that is the common fallback.

Wildcards are okay in filenames (only) when there's not a common 
fallback.

> >     - changed email to dlemoal@xxxxxxxxxx
> >     - dropped label
> >     - fixed ident
> > 
> >  .../bindings/ata/cirrus,ep9312-pata.yaml      | 44 +++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/ata/cirrus,ep9312-pata.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/ata/cirrus,ep9312-pata.yaml b/Documentation/devicetree/bindings/ata/cirrus,ep9312-pata.yaml
> > new file mode 100644
> > index 000000000000..3489be55a6fe
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/ata/cirrus,ep9312-pata.yaml
> > @@ -0,0 +1,44 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/ata/cirrus,ep9312-pata.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Cirrus Logic EP9312 PATA controller
> > +
> > +maintainers:
> > +  - Damien Le Moal <dlemoal@xxxxxxxxxx>
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - const: cirrus,ep9312-pata
> 
> I am not a DT specialist, but isn't this line superfluous since it is listed in
> the items ?

No, this entry is for ep9312. The next entry is for ep9315 which is 
compatible with ep9312 version. The cirrus,ep9315-pata is there in case 
a distinction (e.g. quirk/errata) needs to be made by the driver 
without having to change the DT.

Rob

> 
> > +      - items:
> > +          - const: cirrus,ep9315-pata
> > +          - const: cirrus,ep9312-pata



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