linux-kernel - Re: [PATCH v3 08/15] dt-bindings: media: Add A31 MIPI CSI-2 bindings documentation

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Date:   Mon, 14 Dec 2020 17:14:26 -0600
From:   Rob Herring <robh@...nel.org>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-sunxi@...glegroups.com, Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Jonathan Corbet <corbet@....net>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Helen Koike <helen.koike@...labora.com>,
        Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        kevin.lhopital@...mail.com
Subject: Re: [PATCH v3 08/15] dt-bindings: media: Add A31 MIPI CSI-2 bindings
 documentation

On Mon, Dec 14, 2020 at 12:35:09PM +0100, Maxime Ripard wrote:
> On Fri, Dec 11, 2020 at 04:57:01PM +0100, Paul Kocialkowski wrote:
> > This introduces YAML bindings documentation for the A31 MIPI CSI-2
> > controller.
> > 
> > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> > ---
> >  .../media/allwinner,sun6i-a31-mipi-csi2.yaml  | 149 ++++++++++++++++++
> >  1 file changed, 149 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
> > new file mode 100644
> > index 000000000000..4d0bab541da1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
> > @@ -0,0 +1,149 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/allwinner,sun6i-a31-mipi-csi2.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Allwinner A31 MIPI CSI-2 Device Tree Bindings
> > +
> > +maintainers:
> > +  - Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - const: allwinner,sun6i-a31-mipi-csi2
> > +      - items:
> > +          - const: allwinner,sun8i-v3s-mipi-csi2
> > +          - const: allwinner,sun6i-a31-mipi-csi2
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    items:
> > +      - description: Bus Clock
> > +      - description: Module Clock
> > +
> > +  clock-names:
> > +    items:
> > +      - const: bus
> > +      - const: mod
> > +
> > +  phys:
> > +    items:
> > +      - description: MIPI D-PHY
> 
> This should be written as
> 
> phys:
>   description: ...

Then you need 'maxItems: 1' or just that. I guess there is some value in 
saying it is a D-PHY.

Rob