linux-kernel - Re: [PATCH 16/18] dt-bindings: usb: meson-g12a-usb: Validate DWC2/DWC3 sub-nodes

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Date:   Tue, 13 Oct 2020 18:50:20 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Rob Herring <robh@...nel.org>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Manu Gautam <mgautam@...eaurora.org>,
        Roger Quadros <rogerq@...com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>
Subject: Re: [PATCH 16/18] dt-bindings: usb: meson-g12a-usb: Validate
 DWC2/DWC3 sub-nodes

On Tue, Oct 13, 2020 at 07:42:03AM -0500, Rob Herring wrote:
> On Sun, Oct 11, 2020 at 01:41:19AM +0300, Serge Semin wrote:
> > Amlogic G12A USB DT sub-nodes are supposed to be compatible with the
> > generic DWC USB2 and USB3 devices. Since now we've got DT schemas for
> > both of the later IP cores let's make sure that the Amlogic G12A USB
> > DT nodes are fully evaluated including the DWC sub-nodes.
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > ---
> >  .../bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml | 15 ++++++++++++++-
> >  1 file changed, 14 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml b/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
> > index 88184d7e26cc..3e8ac0ff90de 100644
> > --- a/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
> > +++ b/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
> > @@ -78,7 +78,20 @@ properties:
> >  
> >  patternProperties:
> >    "^usb@[0-9a-f]+$":
> > -    type: object
> > +    allOf:
> > +      - if:
> > +          properties:
> > +            compatible:
> > +              contains:
> > +                const: snps,dwc2
> > +        then:
> > +          $ref: dwc2.yaml#
> > +      - if:
> > +          properties:
> > +            compatible:
> > +              const: snps,dwc3
> > +        then:
> > +          $ref: snps,dwc3.yaml#
> 

> It should be enough to do just:
> 
> oneOf:
>   - $ref: dwc2.yaml#
>   - $ref: snps,dwc3.yaml#

Ah, good point! Thanks.

-Sergey