[PATCH v7 7/9] dt/bindings: drm/bridge: it6505: Add mode-switch support

[Pin-yen Lin]

Hi Krzysztof,

Thanks for the review.

On Fri, Jan 6, 2023 at 8:48 PM Krzysztof Kozlowski
<krzysztof.kozlowski at linaro.org> wrote:
>
> On 05/01/2023 14:24, Pin-yen Lin wrote:
> > ITE IT6505 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.
>
> Use subject prefixes matching the subsystem (which you can get for
> example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
> your patch is touching).

I'll fix this in this patch and the one for anx7625.
>
> >
> > Update the binding to accommodate this usage by introducing a
> > data-lanes and a mode-switch property on endpoints.
> >
> > Signed-off-by: Pin-yen Lin <treapking at chromium.org>
> >
> > ---
> >
> > Changes in v7:
> > - Fixed issues reported by dt_binding_check.
> > - Updated the schema and the example dts for data-lanes.
> > - Changed to generic naming for the example dts node.
> >
> > Changes in v6:
> > - Remove switches node and use endpoints and data-lanes property to
> >   describe the connections.
> >
> >  .../bindings/display/bridge/ite,it6505.yaml   | 95 ++++++++++++++++---
> >  1 file changed, 84 insertions(+), 11 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> > index b16a9d9127dd..1ee7cd0d2035 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
> > @@ -77,20 +77,45 @@ properties:
> >          unevaluatedProperties: false
> >          description: Video port for DP output
> >
> > -        properties:
> > -          endpoint:
> > +        patternProperties:
> > +          "^endpoint@[01]$":
> >              $ref: /schemas/graph.yaml#/$defs/endpoint-base
> >              unevaluatedProperties: false
> >
> >              properties:
> > +              reg:
> > +                maxItems: 1
> > +
> > +              remote-endpoint: true
> > +
> >                data-lanes:
> > -                minItems: 1
> > -                uniqueItems: true
> > -                items:
> > -                  - enum: [ 0, 1 ]
> > -                  - const: 1
> > -                  - const: 2
> > -                  - const: 3
> > +                oneOf:
> > +                  - minItems: 1
>
> Drop minItems.
>
> > +                    maxItems: 1
>
> Actually drop this as well and just use items with one item (enum).

Sure I'll update this in v8.
>
> > +                    items:
> > +                      enum: [0, 1, 2, 3]
> > +
> > +                  - items:
> > +                      - const: 0
> > +                      - const: 1
> > +
> > +                  - items:
> > +                      - const: 2
> > +                      - const: 3
> > +
> > +                  - items:
> > +                      - const: 0
> > +                      - const: 1
> > +                      - const: 2
> > +                      - const: 3
> > +
> > +              mode-switch:
> > +                type: boolean
> > +                description: Register this node as a Type-C mode switch or not.
> > +
> > +            required:
> > +              - reg
> > +              - remote-endpoint
> >
> >      required:
> >        - port at 0
> > @@ -102,7 +127,6 @@ required:
> >    - pwr18-supply
> >    - interrupts
> >    - reset-gpios
> > -  - extcon
> >    - ports
> >
> >  additionalProperties: false
> > @@ -139,8 +163,11 @@ examples:
> >                  };
> >
> >                  port at 1 {
> > +                    #address-cells = <1>;
> > +                    #size-cells = <0>;
> >                      reg = <1>;
> > -                    it6505_out: endpoint {
> > +                    it6505_out: endpoint at 0 {
> > +                        reg = <0>;
> >                          remote-endpoint = <&dp_in>;
> >                          data-lanes = <0 1>;
> >                      };
> > @@ -148,3 +175,49 @@ examples:
> >              };
> >          };
> >      };
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +
> > +    i2c3 {
>
> Just i2c

Will fix in v8.
>
> Best regards,
> Krzysztof
>

Best regards,
Pin-yen