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

Jonathan Cormier posted 4 patches 2 years, 7 months ago
[PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example
Posted by Jonathan Cormier 2 years, 7 months ago 
Add a i2c example with HDMI connector

Signed-off-by: Jonathan Cormier <jcormier@criticallink.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>;
+
+      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>;
+        };
+      };
+    };
+
 ...

-- 
2.25.1
Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example
Posted by Krzysztof Kozlowski 2 years, 7 months ago 
On 25/01/2023 22:09, Jonathan Cormier wrote:
> Add a i2c example with HDMI connector

Why? It's the same - but more on this below.

> 
> Signed-off-by: Jonathan Cormier <jcormier@criticallink.com>

You need to test the bindings before sending and fix the errors.

> ---
>  .../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>;
> +
> +      hdmi_encoder: tfp410@38 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +        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>;
> +            };

That's the same example as existing one, so it looks useless. I don't
see benefits of this example.

> +          };
> +        };
> +      };
> +    };
> +
> +    hdmi: hdmi_connector {

Drop. Incorrect name and not really related.

> +      compatible = "hdmi-connector";
> +      label = "hdmi";
> +      type = "a";
> +      ddc-i2c-bus = <&i2c1>;
> +      port {
> +        hdmi_connector_in: endpoint {
> +          remote-endpoint = <&tfp410_out>;
> +        };
> +      };
> +    };
> +
>  ...
> 

Best regards,
Krzysztof
Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example
Posted by Rob Herring 2 years, 7 months ago 
On Wed, 25 Jan 2023 16:09:09 -0500, Jonathan Cormier wrote:
> Add a i2c example with HDMI connector
> 
> Signed-off-by: Jonathan Cormier <jcormier@criticallink.com>
> ---
>  .../bindings/display/bridge/ti,tfp410.yaml         | 42 ++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/display/bridge/ti,tfp410.example.dts:77.37-79.19: ERROR (duplicate_label): /example-1/i2c/tfp410@38/ports/port@0/endpoint: Duplicate label 'tfp410_in' on /example-1/i2c/tfp410@38/ports/port@0/endpoint and /example-0/encoder/ports/port@0/endpoint
Documentation/devicetree/bindings/display/bridge/ti,tfp410.example.dts:84.38-86.19: ERROR (duplicate_label): /example-1/i2c/tfp410@38/ports/port@1/endpoint: Duplicate label 'tfp410_out' on /example-1/i2c/tfp410@38/ports/port@1/endpoint and /example-0/encoder/ports/port@1/endpoint
ERROR: Input tree has errors, aborting (use -f to force output)
make[1]: *** [scripts/Makefile.lib:434: Documentation/devicetree/bindings/display/bridge/ti,tfp410.example.dtb] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1508: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230125-tfp410_i2c-v1-1-66a4d4e390b7@criticallink.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example
Posted by Laurent Pinchart 2 years, 7 months ago 
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@criticallink.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.

> +
> +      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.

>  ...

-- 
Regards,

Laurent Pinchart
Re: [PATCH 1/4] dt-bindings: display: bridge: tfp410: Add tfp410 i2c example
Posted by Jon Cormier 2 years, 7 months ago 
On Wed, Jan 25, 2023 at 4:24 PM Laurent Pinchart
<laurent.pinchart@ideasonboard.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@criticallink.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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