linux-kernel - Re: [PATCH 1/2] dt-bindings: media: renesas,vin: Document renesas-vin-ycbcr-8b-g property

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Message-ID: <20200731201900.GA704336@bogus>
Date:   Fri, 31 Jul 2020 14:19:00 -0600
From:   Rob Herring <robh@...nel.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Niklas <niklas.soderlund@...natech.se>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media <linux-media@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: Re: [PATCH 1/2] dt-bindings: media: renesas,vin: Document
 renesas-vin-ycbcr-8b-g property

On Sat, Jul 25, 2020 at 11:23:13PM +0100, Lad, Prabhakar wrote:
> Hi Niklas,
> 
> On Sat, Jul 25, 2020 at 9:11 AM Niklas <niklas.soderlund@...natech.se> wrote:
> >
> > Hi Lad,
> >
> > On 2020-07-24 22:11:31 +0100, Lad, Prabhakar wrote:
> > > Hi Niklas,
> > >
> > > Thank you for the review.
> > >
> > > On Fri, Jul 24, 2020 at 8:37 PM Niklas <niklas.soderlund@...natech.se> wrote:
> > > >
> > > > Hi Lad,
> > > >
> > > > Thanks for your patch.
> > > >
> > > > On 2020-07-24 15:58:51 +0100, Lad Prabhakar wrote:
> > > > > Add a DT property "renesas-vin-ycbcr-8b-g" to select YCbCr422 8-bit data
> > > > > input pins.
> > > > >
> > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > > > Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
> > > > > ---
> > > > >  Documentation/devicetree/bindings/media/renesas,vin.yaml | 13 +++++++++++++
> > > > >  1 file changed, 13 insertions(+)
> > > > >
> > > > > diff --git a/Documentation/devicetree/bindings/media/renesas,vin.yaml b/Documentation/devicetree/bindings/media/renesas,vin.yaml
> > > > > index 53c0a72..7dfb781 100644
> > > > > --- a/Documentation/devicetree/bindings/media/renesas,vin.yaml
> > > > > +++ b/Documentation/devicetree/bindings/media/renesas,vin.yaml
> > > > > @@ -106,6 +106,12 @@ properties:
> > > > >
> > > > >            remote-endpoint: true
> > > > >
> > > > > +          renesas-vin-ycbcr-8b-g:
> > > >
> > > > I think the preferred format for vendor specific properties are
> > > > "<vendor>,<property>".
> > > >
> > > Indeed and I had it as renesas,vin-ycbcr-8b-g but dt_bindings_check
> > > complained about it.
> >
> > I see, what was the error?
> >
>   CHKDT   Documentation/devicetree/bindings/media/renesas,vin.yaml
> /home/prasmi/work/renasas/g2n/renesas-devel/Documentation/devicetree/bindings/media/renesas,vin.yaml:
> properties:port:properties:endpoint:properties:renesas,vin-ycbcr-8b-g:
> {'type': 'boolean', 'description': 'If present this property specifies
> to selects VIN_G[7:0] as data pins for YCbCr422 8-bit data.',
> 'default': False} is not valid under any of the given schemas
> (Possible causes of the failure):
>     /home/prasmi/work/renasas/g2n/renesas-devel/Documentation/devicetree/bindings/media/renesas,vin.yaml:
> properties:port:properties:endpoint:properties:renesas,vin-ycbcr-8b-g:
> 'not' is a required property
> 
> /home/prasmi/work/renasas/g2n/renesas-devel/Documentation/devicetree/bindings/media/renesas,vin.yaml:
> properties:ports:properties:port@0:properties:endpoint:properties:renesas,vin-ycbcr-8b-g:
> {'type': 'boolean', 'description': 'If present this property specifies
> to selects VIN_G[7:0] as data pins for YCbCr422 8-bit data.',
> 'default': False} is not valid under any of the given schemas
> (Possible causes of the failure):
>     /home/prasmi/work/renasas/g2n/renesas-devel/Documentation/devicetree/bindings/media/renesas,vin.yaml:
> properties:ports:properties:port@0:properties:endpoint:properties:renesas,vin-ycbcr-8b-g:
> 'not' is a required property

The errors here aren't that helpful. The problem is 'default: false' 
doesn't make sense for a boolean type as false is always not present for 
DT.

Rob