linux-kernel - Re: [PATCH RESEND 1/4] dt-bindings: drm/bridge: analogix-anx7688: Add ANX7688 transmitter binding

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Message-ID: <CAJMQK-gYFJ-F9_rkPsxXS+qc40OwU-di2tdLLbL7x=smbRNujw@mail.gmail.com>
Date:   Fri, 20 Dec 2019 11:20:13 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Rob Herring <robh@...nel.org>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Devicetree List <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Matthias Brugger <mbrugger@...e.com>,
        Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [PATCH RESEND 1/4] dt-bindings: drm/bridge: analogix-anx7688: Add
 ANX7688 transmitter binding

On Fri, Dec 20, 2019 at 4:45 AM Rob Herring <robh@...nel.org> wrote:
>
> On Wed, Dec 11, 2019 at 02:19:08PM +0800, Hsin-Yi Wang wrote:
> > From: Nicolas Boichat <drinkcat@...omium.org>
> >
> > Add support for analogix,anx7688
> >
> > Signed-off-by: Nicolas Boichat <drinkcat@...omium.org>
> > Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> > ---
> > Change from RFC to v1:
> > - txt to yaml
> > ---
> >  .../bindings/display/bridge/anx7688.yaml      | 60 +++++++++++++++++++
> >  1 file changed, 60 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/bridge/anx7688.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/anx7688.yaml b/Documentation/devicetree/bindings/display/bridge/anx7688.yaml
> > new file mode 100644
> > index 000000000000..cf79f7cf8fdf
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/anx7688.yaml
> > @@ -0,0 +1,60 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/bridge/anx7688.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Analogix ANX7688 SlimPort (Single-Chip Transmitter for DP over USB-C)
> > +
> > +maintainers:
> > +  - Nicolas Boichat <drinkcat@...omium.org>
> > +
> > +description: |
> > +  The ANX7688 is a single-chip mobile transmitter to support 4K 60 frames per
> > +  second (4096x2160p60) or FHD 120 frames per second (1920x1080p120) video
> > +  resolution from a smartphone or tablet with full function USB-C.
> > +
> > +  This binding only describes the HDMI to DP display bridge.
> > +
> > +properties:
> > +  compatible:
> > +    const: analogix,anx7688
> > +
> > +  reg:
> > +    maxItems: 1
> > +    description: I2C address of the device
> > +
> > +  ports:
> > +    type: object
> > +
> > +    properties:
> > +      port@0:
> > +        type: object
> > +        description: |
> > +          Video port for HDMI input
> > +
> > +      port@1:
> > +        type: object
> > +        description: |
> > +          Video port for eDP output
> > +
> > +    required:
> > +      - port@0
>
> Sometimes you have no output?
Yes, only input is required.
>
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - ports
>
> The example will have errors because it is missing 'ports'. Run 'make
> dt_binding_check'.
>
> Add:
>
> additionalProperties: false
>
Ack, will fix this. Thanks
> > +
> > +examples:
> > +  - |
> > +    anx7688: anx7688@2c {
> > +      compatible = "analogix,anx7688";
> > +      reg = <0x2c>;
> > +
> > +      port {
> > +        anx7688_in: endpoint {
> > +          remote-endpoint = <&hdmi0_out>;
> > +        };
> > +      };
> > +    };
> > --
> > 2.24.0.525.g8f36a354ae-goog
> >