diff mbox series

[v6,3/7] dt-bindings: drm/bridge: anx7625: Add mode-switch support

Message ID 20221124102056.393220-4-treapking@chromium.org
State New
Headers
Series Register Type-C mode-switch in DP bridge endpoints |

Commit Message

Pin-yen Lin Nov. 24, 2022, 10:20 a.m. UTC 
  Analogix 7625 can be used in systems to switch the DP traffic between
two downstreams, which can be USB Type-C DisplayPort alternate mode
lane or regular DisplayPort output ports.

Update the binding to accommodate this usage by introducing a
data-lanes and a mode-switch property on endpoints.

Also include the link to the product brief in the bindings.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>

---

Changes in v6:
- Remove switches node and use endpoints and data-lanes property to
  describe the connections.

 .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
 1 file changed, 71 insertions(+), 2 deletions(-)

Comments

Rob Herring Nov. 24, 2022, 5:39 p.m. UTC | #1 
On Thu, 24 Nov 2022 18:20:52 +0800, Pin-yen Lin wrote:
> Analogix 7625 can be used in systems to switch the DP traffic between
> two downstreams, which can be USB Type-C DisplayPort alternate mode
> lane or regular DisplayPort output ports.
> 
> Update the binding to accommodate this usage by introducing a
> data-lanes and a mode-switch property on endpoints.
> 
> Also include the link to the product brief in the bindings.
> 
> Signed-off-by: Pin-yen Lin <treapking@chromium.org>
> 
> ---
> 
> Changes in v6:
> - Remove switches node and use endpoints and data-lanes property to
>   describe the connections.
> 
>  .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
>  1 file changed, 71 insertions(+), 2 deletions(-)
> 

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:
./Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: [error] syntax error: found character '\t' that cannot start any token (syntax)

dtschema/dtc warnings/errors:
make[1]: *** Deleting file 'Documentation/devicetree/bindings/display/bridge/analogix,anx7625.example.dts'
Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: found character '\t' that cannot start any token
make[1]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/display/bridge/analogix,anx7625.example.dts] Error 1
make[1]: *** Waiting for unfinished jobs....
./Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: found character '\t' that cannot start any token
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml: ignoring, error parsing file
make: *** [Makefile:1492: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20221124102056.393220-4-treapking@chromium.org

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

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.
Pin-yen Lin Nov. 25, 2022, 3:58 a.m. UTC | #2 
Sorry for accidentally using the tab characters. Will fix this in v7.

On Fri, Nov 25, 2022 at 1:39 AM Rob Herring <robh@kernel.org> wrote:
>
>
> On Thu, 24 Nov 2022 18:20:52 +0800, Pin-yen Lin wrote:
> > Analogix 7625 can be used in systems to switch the DP traffic between
> > two downstreams, which can be USB Type-C DisplayPort alternate mode
> > lane or regular DisplayPort output ports.
> >
> > Update the binding to accommodate this usage by introducing a
> > data-lanes and a mode-switch property on endpoints.
> >
> > Also include the link to the product brief in the bindings.
> >
> > Signed-off-by: Pin-yen Lin <treapking@chromium.org>
> >
> > ---
> >
> > Changes in v6:
> > - Remove switches node and use endpoints and data-lanes property to
> >   describe the connections.
> >
> >  .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
> >  1 file changed, 71 insertions(+), 2 deletions(-)
> >
>
> 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:
> ./Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: [error] syntax error: found character '\t' that cannot start any token (syntax)
>
> dtschema/dtc warnings/errors:
> make[1]: *** Deleting file 'Documentation/devicetree/bindings/display/bridge/analogix,anx7625.example.dts'
> Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: found character '\t' that cannot start any token
> make[1]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/display/bridge/analogix,anx7625.example.dts] Error 1
> make[1]: *** Waiting for unfinished jobs....
> ./Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml:218:1: found character '\t' that cannot start any token
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml: ignoring, error parsing file
> make: *** [Makefile:1492: dt_binding_check] Error 2
>
> doc reference errors (make refcheckdocs):
>
> See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20221124102056.393220-4-treapking@chromium.org
>
> This check can fail if there are any dependencies. The base for a patch
> series is generally the most recent rc1.
>
> 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.
>
Krzysztof Kozlowski Nov. 27, 2022, 8:58 p.m. UTC | #3 
On 24/11/2022 11:20, Pin-yen Lin wrote:
> Analogix 7625 can be used in systems to switch the DP traffic between
> two downstreams, which can be USB Type-C DisplayPort alternate mode
> lane or regular DisplayPort output ports.
> 
> Update the binding to accommodate this usage by introducing a
> data-lanes and a mode-switch property on endpoints.
> 
> Also include the link to the product brief in the bindings.
> 
> Signed-off-by: Pin-yen Lin <treapking@chromium.org>
> 
> ---
> 
> Changes in v6:
> - Remove switches node and use endpoints and data-lanes property to
>   describe the connections.

Except missing testing few things...

> 
>  .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
>  1 file changed, 71 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> index 4590186c4a0b..5fdbf1f3bab8 100644
> --- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> @@ -12,7 +12,8 @@ maintainers:
>  
>  description: |
>    The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
> -  designed for portable devices.
> +  designed for portable devices. Product brief is available at
> +  https://www.analogix.com/en/system/files/AA-002291-PB-6-ANX7625_ProductBrief.pdf
>  
>  properties:
>    compatible:
> @@ -112,10 +113,36 @@ properties:
>                data-lanes: true
>  
>        port@1:
> -        $ref: /schemas/graph.yaml#/properties/port
> +        $ref: /schemas/graph.yaml#/properties/port-base

I don't understand why you are changing this line.

>          description:
>            Video port for panel or connector.
>  
> +        patternProperties:
> +          "^endpoint@[01]$":
> +            $ref: /schemas/media/video-interfaces.yaml#
> +            type: object
> +            unevaluatedProperties: false
> +
> +            properties:
> +              reg:
> +                maxItems: 1
> +
> +              remote-endpoint: true
> +
> +              data-lanes:
> +                minItems: 1
> +                uniqueItems: true

These are confusing... you allow only one item, so why minItems and
uniqueItems?

> +                items:
> +                  - enum: [ 0, 1, 2, 3]
> +
> +              mode-switch:
> +                type: boolean
> +                description: Register this node as a Type-C mode switch or not.
> +
> +            required:
> +              - reg
> +              - remote-endpoint
> +
>      required:
>        - port@0
>        - port@1
> @@ -186,3 +213,45 @@ examples:
>              };
>          };
>      };
> +  - |
> +    &i2c3 {
> +	anx_bridge_dp: anx7625-dp@58 {

Messed up indentation.

> +	    compatible = "analogix,anx7625

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

";
> +	    reg = <0x58>;

Best regards,
Krzysztof
Pin-yen Lin Dec. 26, 2022, 8:49 a.m. UTC | #4 
Hi Krzysztof,

Thanks for the review.

On Mon, Nov 28, 2022 at 4:58 AM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 24/11/2022 11:20, Pin-yen Lin wrote:
> > Analogix 7625 can be used in systems to switch the DP traffic between
> > two downstreams, which can be USB Type-C DisplayPort alternate mode
> > lane or regular DisplayPort output ports.
> >
> > Update the binding to accommodate this usage by introducing a
> > data-lanes and a mode-switch property on endpoints.
> >
> > Also include the link to the product brief in the bindings.
> >
> > Signed-off-by: Pin-yen Lin <treapking@chromium.org>
> >
> > ---
> >
> > Changes in v6:
> > - Remove switches node and use endpoints and data-lanes property to
> >   describe the connections.
>
> Except missing testing few things...
>
> >
> >  .../display/bridge/analogix,anx7625.yaml      | 73 ++++++++++++++++++-
> >  1 file changed, 71 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> > index 4590186c4a0b..5fdbf1f3bab8 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> > @@ -12,7 +12,8 @@ maintainers:
> >
> >  description: |
> >    The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
> > -  designed for portable devices.
> > +  designed for portable devices. Product brief is available at
> > +  https://www.analogix.com/en/system/files/AA-002291-PB-6-ANX7625_ProductBrief.pdf
> >
> >  properties:
> >    compatible:
> > @@ -112,10 +113,36 @@ properties:
> >                data-lanes: true
> >
> >        port@1:
> > -        $ref: /schemas/graph.yaml#/properties/port
> > +        $ref: /schemas/graph.yaml#/properties/port-base
>
> I don't understand why you are changing this line.

Without this change, the `unevaluatedProperties: false` in
`/schemas/graph.yaml#/properties/port` does not allow me to add new
properties.
>
> >          description:
> >            Video port for panel or connector.
> >
> > +        patternProperties:
> > +          "^endpoint@[01]$":
> > +            $ref: /schemas/media/video-interfaces.yaml#
> > +            type: object
> > +            unevaluatedProperties: false
> > +
> > +            properties:
> > +              reg:
> > +                maxItems: 1
> > +
> > +              remote-endpoint: true
> > +
> > +              data-lanes:
> > +                minItems: 1
> > +                uniqueItems: true
>
> These are confusing... you allow only one item, so why minItems and
> uniqueItems?

What I want to use is something like:
```
items:
  enum: [0,1, 2, 3]
```
That is, all the items should be an integer between 0 and 3. I'll
update this to a stricter version in v7.
>
> > +                items:
> > +                  - enum: [ 0, 1, 2, 3]
> > +
> > +              mode-switch:
> > +                type: boolean
> > +                description: Register this node as a Type-C mode switch or not.
> > +
> > +            required:
> > +              - reg
> > +              - remote-endpoint
> > +
> >      required:
> >        - port@0
> >        - port@1
> > @@ -186,3 +213,45 @@ examples:
> >              };
> >          };
> >      };
> > +  - |
> > +    &i2c3 {
> > +     anx_bridge_dp: anx7625-dp@58 {
>
> Messed up indentation.
I'll fix this in the next version.
>
> > +         compatible = "analogix,anx7625
>
> Node names should be generic.
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
I'll update this in v7.
>
> ";
> > +         reg = <0x58>;
>
> Best regards,
> Krzysztof
>

Best regards,
Pin-yen
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
index 4590186c4a0b..5fdbf1f3bab8 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
@@ -12,7 +12,8 @@  maintainers:
 
 description: |
   The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
-  designed for portable devices.
+  designed for portable devices. Product brief is available at
+  https://www.analogix.com/en/system/files/AA-002291-PB-6-ANX7625_ProductBrief.pdf
 
 properties:
   compatible:
@@ -112,10 +113,36 @@  properties:
               data-lanes: true
 
       port@1:
-        $ref: /schemas/graph.yaml#/properties/port
+        $ref: /schemas/graph.yaml#/properties/port-base
         description:
           Video port for panel or connector.
 
+        patternProperties:
+          "^endpoint@[01]$":
+            $ref: /schemas/media/video-interfaces.yaml#
+            type: object
+            unevaluatedProperties: false
+
+            properties:
+              reg:
+                maxItems: 1
+
+              remote-endpoint: true
+
+              data-lanes:
+                minItems: 1
+                uniqueItems: true
+                items:
+                  - enum: [ 0, 1, 2, 3]
+
+              mode-switch:
+                type: boolean
+                description: Register this node as a Type-C mode switch or not.
+
+            required:
+              - reg
+              - remote-endpoint
+
     required:
       - port@0
       - port@1
@@ -186,3 +213,45 @@  examples:
             };
         };
     };
+  - |
+    &i2c3 {
+	anx_bridge_dp: anx7625-dp@58 {
+	    compatible = "analogix,anx7625";
+	    reg = <0x58>;
+	    pinctrl-names = "default";
+	    pinctrl-0 = <&anx7625_dp_pins>;
+	    enable-gpios = <&pio 176 GPIO_ACTIVE_HIGH>;
+	    reset-gpios = <&pio 177 GPIO_ACTIVE_HIGH>;
+	    vdd10-supply = <&pp1100_dpbrdg>;
+	    vdd18-supply = <&pp1800_dpbrdg_dx>;
+	    vdd33-supply = <&pp3300_dpbrdg_dx>;
+	    analogix,audio-enable;
+
+	    ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+		    reg = <0>;
+		    anx7625_dp_in: endpoint {
+			bus-type = <7>;
+			remote-endpoint = <&dpi_out>;
+		    };
+		};
+
+		port@1 {
+		    reg = <1>;
+		    anx_typec0: endpoint@0 {
+			mode-switch;
+			data-lanes = <0 1>;
+			remote-endpoint = <&typec_port0>;
+		    };
+		    anx_typec1: endpoint@1 {
+			mode-switch;
+			data-lanes = <2 3>;
+			remote-endpoint = <&typec_port1>;
+		    };
+		};
+	    };
+	};
+    };