linux-kernel - Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example

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Date:   Wed, 25 Jan 2023 16:59:41 -0500
From:   Jon Cormier <jcormier@...ticallink.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Jyri Sarha <jsarha@...com>, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Michael Williamson <michael.williamson@...ticallink.com>,
        Bob Duke <bduke@...ticallink.com>
Subject: Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example

On Wed, Jan 25, 2023 at 4:24 PM Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:
>
> Hi Jonathan,
>
> Thank you for the patch.
>
> On Wed, Jan 25, 2023 at 04:09:09PM -0500, Jonathan Cormier wrote:
> > Add a i2c example with HDMI connector
> >
> > Signed-off-by: Jonathan Cormier <jcormier@...ticallink.com>
> > ---
> >  .../bindings/display/bridge/ti,tfp410.yaml         | 42 ++++++++++++++++++++++
> >  1 file changed, 42 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml b/Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
> > index 4c5dd8ec2951..456214f14b47 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
> > @@ -116,4 +116,46 @@ examples:
> >          };
> >      };
> >
> > +  - |
> > +    i2c {
> > +      #address-cells = <1>;
> > +      #size-cells = <0>;
>
> Please use 4 spaces for indentation, as in the other example.
Will do, the whole file is 2 space indents. I didn't notice the
examples switch to 4 spaces.
>
> > +
> > +      hdmi_encoder: tfp410@38 {
> > +        compatible = "ti,tfp410";
> > +        reg = <0x38>;
> > +
> > +        ports {
> > +          address-cells = <1>;
> > +          size-cells = <0>;
> > +
> > +          port@0 {
> > +            reg = <0>;
> > +            tfp410_in: endpoint {
> > +              remote-endpoint = <&dpi1_out>;
> > +            };
> > +          };
> > +
> > +          port@1 {
> > +            reg = <1>;
> > +            tfp410_out: endpoint {
> > +              remote-endpoint = <&hdmi_connector_in>;
> > +            };
> > +          };
> > +        };
> > +      };
> > +    };
> > +
> > +    hdmi: hdmi_connector {
> > +      compatible = "hdmi-connector";
> > +      label = "hdmi";
> > +      type = "a";
> > +      ddc-i2c-bus = <&i2c1>;
> > +      port {
> > +        hdmi_connector_in: endpoint {
> > +          remote-endpoint = <&tfp410_out>;
> > +        };
> > +      };
> > +    };
> > +
>
> You can drop the hdmi connector, the example will still validate.
Okay
>
> >  ...
>
> --
> Regards,
>
> Laurent Pinchart



-- 
Jonathan Cormier
Software Engineer

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