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Date:   Wed, 21 Aug 2019 19:54:58 +0200
From:   Krzysztof Kozlowski <krzk@kernel.org>
To:     Rob Herring <robh+dt@kernel.org>
Cc:     Schrempf Frieder <frieder.schrempf@kontron.de>,
        Mark Rutland <mark.rutland@arm.com>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        devicetree@vger.kernel.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v6 3/4] dt-bindings: arm: fsl: Add Kontron i.MX6UL N6310
 compatibles
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On Tue, Aug 20, 2019 at 03:27:39PM -0500, Rob Herring wrote:
> > I see. If I understand the schema correctly, this should look like:
> 
> Looks correct, but a couple of comments.
> 
> > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
> > index 7294ac36f4c0..eb263d1ccf13 100644
> > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > @@ -161,6 +161,22 @@ properties:
> >          items:
> >            - enum:
> >                - fsl,imx6ul-14x14-evk      # i.MX6 UltraLite 14x14 EVK Board
> > +              - kontron,imx6ul-n6310-som  # Kontron N6310 SOM
> 
> Is the SOM ever used alone? If not, then no point in listing this here.

SoM alone: no, because it requires some type of base board. However it
will be used by some customer designs with some amount of
changes/addons.

Looking at other aproaches, usually SoMs have their own compatible.  In
such case - I should document it somewhere.

> 
> > +          - const: fsl,imx6ul
> > +
> > +      - description: Kontron N6310 S Board
> > +        items:
> > +          - enum:
> > +              - kontron,imx6ul-n6310-s
> 
> This could be a 'const' instead. It depends if you think there will
> ever be more than one entry.

Indeed, I'll make this and entry below for S 43 board const.


Best regards,
Krzysztof