diff mbox series

dt-bindings: display: renesas,du: Convert binding to YAML

Message ID 20200515003340.18191-1-laurent.pinchart+renesas@ideasonboard.com (mailing list archive)
State New
Delegated to: Kieran Bingham
Headers show
Series dt-bindings: display: renesas,du: Convert binding to YAML | expand

Commit Message

Laurent Pinchart May 15, 2020, 12:33 a.m. UTC
Convert the Renesas R-Car DU text binding to YAML.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 .../bindings/display/renesas,du.txt           | 139 ---
 .../bindings/display/renesas,du.yaml          | 915 ++++++++++++++++++
 2 files changed, 915 insertions(+), 139 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/renesas,du.txt
 create mode 100644 Documentation/devicetree/bindings/display/renesas,du.yaml

Comments

Rob Herring (Arm) May 28, 2020, 6:52 p.m. UTC | #1
On Fri, May 15, 2020 at 03:33:40AM +0300, Laurent Pinchart wrote:
> Convert the Renesas R-Car DU text binding to YAML.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>  .../bindings/display/renesas,du.txt           | 139 ---
>  .../bindings/display/renesas,du.yaml          | 915 ++++++++++++++++++

A 'normal' conversion is about double the lines. I guess this is a sign 
that the original was not well specified.

Maybe this can be split to reduce some of the if/then? One way is define 
a common 'include' file that each specific instance can reference

[...]

> diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
> new file mode 100644
> index 000000000000..ca48065afe1f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/renesas,du.yaml
> @@ -0,0 +1,915 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/renesas,du.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas R-Car Display Unit (DU)
> +
> +maintainers:
> +  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> +
> +description: |
> +  These DT bindings describe the Display Unit embedded in the Renesas R-Car
> +  Gen1, R-Car Gen2, R-Car Gen3, RZ/G1 and RZ/G2 SoCs.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - renesas,du-r8a7743 # for RZ/G1M compatible DU
> +      - renesas,du-r8a7744 # for RZ/G1N compatible DU
> +      - renesas,du-r8a7745 # for RZ/G1E compatible DU
> +      - renesas,du-r8a77470 # for RZ/G1C compatible DU
> +      - renesas,du-r8a774a1 # for RZ/G2M compatible DU
> +      - renesas,du-r8a774b1 # for RZ/G2N compatible DU
> +      - renesas,du-r8a774c0 # for RZ/G2E compatible DU
> +      - renesas,du-r8a7779 # for R-Car H1 compatible DU
> +      - renesas,du-r8a7790 # for R-Car H2 compatible DU
> +      - renesas,du-r8a7791 # for R-Car M2-W compatible DU
> +      - renesas,du-r8a7792 # for R-Car V2H compatible DU
> +      - renesas,du-r8a7793 # for R-Car M2-N compatible DU
> +      - renesas,du-r8a7794 # for R-Car E2 compatible DU
> +      - renesas,du-r8a7795 # for R-Car H3 compatible DU
> +      - renesas,du-r8a7796 # for R-Car M3-W compatible DU
> +      - renesas,du-r8a77965 # for R-Car M3-N compatible DU
> +      - renesas,du-r8a77970 # for R-Car V3M compatible DU
> +      - renesas,du-r8a77980 # for R-Car V3H compatible DU
> +      - renesas,du-r8a77990 # for R-Car E3 compatible DU
> +      - renesas,du-r8a77995 # for R-Car D3 compatible DU
> +
> +  reg:
> +    maxItems: 1
> +
> +  # See compatible-specific constraints below.
> +  clocks: true
> +  clock-names: true
> +  interrupts: true
> +  resets: true
> +  reset-names: true
> +
> +  ports:
> +    type: object
> +    description: |
> +      The connections to the DU output video ports are modeled using the OF
> +      graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> +      The number of ports and their assignment are model-dependent. Each port
> +      shall have a single endpoint.
> +
> +    properties:
> +      '#address-cells':
> +        const: 1
> +
> +      '#size-cells':
> +        const: 0
> +
> +    patternProperties:
> +      "^port@[0-3]$":
> +        type: object
> +
> +        properties:
> +          reg:
> +            maxItems: 1
> +
> +          endpoint:
> +            type: object
> +
> +            properties:
> +              remote-endpoint:
> +                $ref: /schemas/types.yaml#/definitions/phandle
> +
> +            required:
> +              - remote-endpoint
> +
> +            additionalProperties: false
> +
> +        additionalProperties: false

You can drop this and assume there's a generic check for this. Though I 
guess this does ensure only 'remote-endpoint' is present which a generic 
schema couldn't do.

> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +    additionalProperties: false
> +
> +  renesas,cmms:
> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> +    description:
> +      A list of phandles to the CMM instances present in the SoC, one for each
> +      available DU channel.
> +
> +  renesas,vsps:
> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> +    description:
> +      A list of phandle and channel index tuples to the VSPs that handle the
> +      memory interfaces for the DU channels. The phandle identifies the VSP
> +      instance that serves the DU channel, and the channel index identifies
> +      the LIF instance in that VSP.
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - interrupts
> +  - resets
> +  - ports
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: renesas,du-r8a7779
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 1
> +          maxItems: 3
> +          items:
> +            - description: Functional clock
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 1
> +          maxItems: 3
> +          items:
> +            - const: du.0
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1

Here and elsewhere:

- pattern: "^dclkin\.[01]$"

> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 1
> +
> +        resets:
> +          maxItems: 1
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: DPAD 1
> +            # port@2 is TCON, not supported yet

Does that matter?

> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +      required:
> +        - interrupts
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a7743
> +              - renesas,du-r8a7744
> +              - renesas,du-r8a7791
> +              - renesas,du-r8a7793
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 2
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: LVDS 0
> +            # port@2 is TCON, not supported yet
> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a7745
> +              - renesas,du-r8a7792
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 2
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: DPAD 1
> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a7794
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 2
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: DPAD 1
> +            # port@2 is TCON, not supported yet
> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a77470
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 2
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: DPAD 1
> +            port@2:
> +              description: LVDS 0
> +            # port@3 is DVENC, not supported yet
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a7790
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: Functional clock for DU2
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +            - description: DU_DOTCLKIN2 input clock
> +
> +        clock-names:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - const: du.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +
> +        interrupts:
> +          maxItems: 3
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: LVDS 0
> +            port@2:
> +              description: LVDS 1
> +            # port@3 is TCON, not supported yet
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a7795
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 4
> +          maxItems: 8
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: Functional clock for DU2
> +            - description: Functional clock for DU4
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +            - description: DU_DOTCLKIN2 input clock
> +            - description: DU_DOTCLKIN3 input clock
> +
> +        clock-names:
> +          minItems: 4
> +          maxItems: 8
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - const: du.2
> +            - const: du.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +              - dclkin.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +              - dclkin.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +              - dclkin.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +              - dclkin.3
> +
> +        interrupts:
> +          maxItems: 4
> +
> +        resets:
> +          maxItems: 2
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +            - const: du.2
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: HDMI 0
> +            port@2:
> +              description: HDMI 1
> +            port@3:
> +              description: LVDS 0
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +            - port@3
> +
> +        renesas,cmms:
> +          minItems: 4
> +
> +        renesas,vsps:
> +          minItems: 4
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a774a1
> +              - renesas,du-r8a7796
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: Functional clock for DU2
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +            - description: DU_DOTCLKIN2 input clock
> +
> +        clock-names:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - const: du.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.2
> +
> +        interrupts:
> +          maxItems: 3
> +
> +        resets:
> +          maxItems: 2
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +            - const: du.2
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: HDMI 0
> +            port@2:
> +              description: LVDS 0
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +
> +        renesas,cmms:
> +          minItems: 3
> +
> +        renesas,vsps:
> +          minItems: 3
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a774b1
> +              - renesas,du-r8a77965
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: Functional clock for DU3
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +            - description: DU_DOTCLKIN3 input clock
> +
> +        clock-names:
> +          minItems: 3
> +          maxItems: 6
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - const: du.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.3
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +              - dclkin.3
> +
> +        interrupts:
> +          maxItems: 3
> +
> +        resets:
> +          maxItems: 2
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +            - const: du.3
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: HDMI 0
> +            port@2:
> +              description: LVDS 0
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +
> +        renesas,cmms:
> +          minItems: 3
> +
> +        renesas,vsps:
> +          minItems: 3
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a77970
> +              - renesas,du-r8a77980
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 1
> +          maxItems: 2
> +          items:
> +            - description: Functional clock for DU0
> +            - description: DU_DOTCLKIN0 input clock
> +
> +        clock-names:
> +          minItems: 1
> +          maxItems: 2
> +          items:
> +            - const: du.0
> +            - const: dclkin.0
> +
> +        interrupts:
> +          maxItems: 1
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: LVDS 0
> +            port@2: false
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +
> +        renesas,vsps:
> +          minItems: 1
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,du-r8a774c0
> +              - renesas,du-r8a77990
> +              - renesas,du-r8a77995
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - description: Functional clock for DU0
> +            - description: Functional clock for DU1
> +            - description: DU_DOTCLKIN0 input clock
> +            - description: DU_DOTCLKIN1 input clock
> +
> +        clock-names:
> +          minItems: 2
> +          maxItems: 4
> +          items:
> +            - const: du.0
> +            - const: du.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +            - enum:
> +              - dclkin.0
> +              - dclkin.1
> +
> +        interrupts:
> +          maxItems: 2
> +
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          items:
> +            - const: du.0
> +
> +        ports:
> +          properties:
> +            port@0:
> +              description: DPAD 0
> +            port@1:
> +              description: LVDS 0
> +            port@2:
> +              description: LVDS 1
> +            # port@3 is TCON, not supported yet
> +            port@3: false
> +
> +          required:
> +            - port@0
> +            - port@1
> +            - port@2
> +
> +        renesas,cmms:
> +          minItems: 2
> +
> +        renesas,vsps:
> +          minItems: 2
> +
> +      required:
> +        - clock-names
> +        - interrupts
> +        - resets
> +        - reset-names
> +        - renesas,vsps
> +
> +additionalProperties: false
> +
> +examples:
> +  # R-Car H3 ES2.0 DU
> +  - |
> +    #include <dt-bindings/clock/renesas-cpg-mssr.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    display@feb00000 {
> +        compatible = "renesas,du-r8a7795";
> +        reg = <0xfeb00000 0x80000>;
> +        interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
> +        clocks = <&cpg CPG_MOD 724>,
> +                 <&cpg CPG_MOD 723>,
> +                 <&cpg CPG_MOD 722>,
> +                 <&cpg CPG_MOD 721>;
> +        clock-names = "du.0", "du.1", "du.2", "du.3";
> +        resets = <&cpg 724>, <&cpg 722>;
> +        reset-names = "du.0", "du.2";
> +
> +        renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
> +        renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +                endpoint {
> +                    remote-endpoint = <&adv7123_in>;
> +                };
> +            };
> +            port@1 {
> +                reg = <1>;
> +                endpoint {
> +                    remote-endpoint = <&dw_hdmi0_in>;
> +                };
> +            };
> +            port@2 {
> +                reg = <2>;
> +                endpoint {
> +                    remote-endpoint = <&dw_hdmi1_in>;
> +                };
> +            };
> +            port@3 {
> +                reg = <3>;
> +                endpoint {
> +                    remote-endpoint = <&lvds0_in>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> -- 
> Regards,
> 
> Laurent Pinchart
>
Laurent Pinchart May 28, 2020, 11:04 p.m. UTC | #2
Hi Rob,

On Thu, May 28, 2020 at 12:52:44PM -0600, Rob Herring wrote:
> On Fri, May 15, 2020 at 03:33:40AM +0300, Laurent Pinchart wrote:
> > Convert the Renesas R-Car DU text binding to YAML.
> > 
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > ---
> >  .../bindings/display/renesas,du.txt           | 139 ---
> >  .../bindings/display/renesas,du.yaml          | 915 ++++++++++++++++++
> 
> A 'normal' conversion is about double the lines. I guess this is a sign 
> that the original was not well specified.

The original was specified in a much more compressed form (for instance
there was a table with one line per SoC to describe the port node, the
YAML equivalent has to be longer).

> Maybe this can be split to reduce some of the if/then? One way is define 
> a common 'include' file that each specific instance can reference

With your recommendation of using pattern instead of enum for the dclkin
clock names, we're down to 848 lines, it's already a bit better :-)

I could indeed split the file, but I'll then run into naming issues. If
you look at the compatible strings for each of the if...then...else,
they don't have easy patterns that could be used to name files. I could
name the files based on one arbitrarily chosen compat string among the
multiple values that are supported, but I think that would become
confusing. I could also have one file per SoC, but we'll then end up
with lots of files, several of them being totally identical except for
the compatible string. Would you mind keeping it as-is, or do you think
it really needs to be split ?

> [...]
> 
> > diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
> > new file mode 100644
> > index 000000000000..ca48065afe1f
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/renesas,du.yaml
> > @@ -0,0 +1,915 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/renesas,du.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Renesas R-Car Display Unit (DU)
> > +
> > +maintainers:
> > +  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > +
> > +description: |
> > +  These DT bindings describe the Display Unit embedded in the Renesas R-Car
> > +  Gen1, R-Car Gen2, R-Car Gen3, RZ/G1 and RZ/G2 SoCs.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - renesas,du-r8a7743 # for RZ/G1M compatible DU
> > +      - renesas,du-r8a7744 # for RZ/G1N compatible DU
> > +      - renesas,du-r8a7745 # for RZ/G1E compatible DU
> > +      - renesas,du-r8a77470 # for RZ/G1C compatible DU
> > +      - renesas,du-r8a774a1 # for RZ/G2M compatible DU
> > +      - renesas,du-r8a774b1 # for RZ/G2N compatible DU
> > +      - renesas,du-r8a774c0 # for RZ/G2E compatible DU
> > +      - renesas,du-r8a7779 # for R-Car H1 compatible DU
> > +      - renesas,du-r8a7790 # for R-Car H2 compatible DU
> > +      - renesas,du-r8a7791 # for R-Car M2-W compatible DU
> > +      - renesas,du-r8a7792 # for R-Car V2H compatible DU
> > +      - renesas,du-r8a7793 # for R-Car M2-N compatible DU
> > +      - renesas,du-r8a7794 # for R-Car E2 compatible DU
> > +      - renesas,du-r8a7795 # for R-Car H3 compatible DU
> > +      - renesas,du-r8a7796 # for R-Car M3-W compatible DU
> > +      - renesas,du-r8a77965 # for R-Car M3-N compatible DU
> > +      - renesas,du-r8a77970 # for R-Car V3M compatible DU
> > +      - renesas,du-r8a77980 # for R-Car V3H compatible DU
> > +      - renesas,du-r8a77990 # for R-Car E3 compatible DU
> > +      - renesas,du-r8a77995 # for R-Car D3 compatible DU
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  # See compatible-specific constraints below.
> > +  clocks: true
> > +  clock-names: true
> > +  interrupts: true
> > +  resets: true
> > +  reset-names: true
> > +
> > +  ports:
> > +    type: object
> > +    description: |
> > +      The connections to the DU output video ports are modeled using the OF
> > +      graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> > +      The number of ports and their assignment are model-dependent. Each port
> > +      shall have a single endpoint.
> > +
> > +    properties:
> > +      '#address-cells':
> > +        const: 1
> > +
> > +      '#size-cells':
> > +        const: 0
> > +
> > +    patternProperties:
> > +      "^port@[0-3]$":
> > +        type: object
> > +
> > +        properties:
> > +          reg:
> > +            maxItems: 1
> > +
> > +          endpoint:
> > +            type: object
> > +
> > +            properties:
> > +              remote-endpoint:
> > +                $ref: /schemas/types.yaml#/definitions/phandle
> > +
> > +            required:
> > +              - remote-endpoint
> > +
> > +            additionalProperties: false
> > +
> > +        additionalProperties: false
> 
> You can drop this and assume there's a generic check for this. Though I 
> guess this does ensure only 'remote-endpoint' is present which a generic 
> schema couldn't do.

When you say I can drop "this", which part do you mean exactly ? I
indeed wanted to specify that no other property than remote-endpoint can
be present. What's your recommendation ?

> > +
> > +    required:
> > +      - port@0
> > +      - port@1
> > +
> > +    additionalProperties: false
> > +
> > +  renesas,cmms:
> > +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> > +    description:
> > +      A list of phandles to the CMM instances present in the SoC, one for each
> > +      available DU channel.
> > +
> > +  renesas,vsps:
> > +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> > +    description:
> > +      A list of phandle and channel index tuples to the VSPs that handle the
> > +      memory interfaces for the DU channels. The phandle identifies the VSP
> > +      instance that serves the DU channel, and the channel index identifies
> > +      the LIF instance in that VSP.
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - interrupts
> > +  - resets
> > +  - ports
> > +
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: renesas,du-r8a7779
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 1
> > +          maxItems: 3
> > +          items:
> > +            - description: Functional clock
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 1
> > +          maxItems: 3
> > +          items:
> > +            - const: du.0
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> 
> Here and elsewhere:
> 
> - pattern: "^dclkin\.[01]$"

I assume you meant

- pattern: "^dclkin\\.[01]$"

Will fix.

> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 1
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: DPAD 1
> > +            # port@2 is TCON, not supported yet
> 
> Does that matter?

It's a nice reminder that we should add support for it. And I don't
meant in the driver, even if that part is also required, but in the DT
bindings. I don't want to blindly state

            port@2:
              description: TCON

without working on TCON support on the driver side to validate that the
DT binding is fine and that I haven't overlooked something. Do you mind
keeping the comment for now ?

> > +            port@2: false
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +      required:
> > +        - interrupts
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a7743
> > +              - renesas,du-r8a7744
> > +              - renesas,du-r8a7791
> > +              - renesas,du-r8a7793
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 2
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: LVDS 0
> > +            # port@2 is TCON, not supported yet
> > +            port@2: false
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a7745
> > +              - renesas,du-r8a7792
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 2
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: DPAD 1
> > +            port@2: false
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a7794
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 2
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: DPAD 1
> > +            # port@2 is TCON, not supported yet
> > +            port@2: false
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a77470
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 2
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: DPAD 1
> > +            port@2:
> > +              description: LVDS 0
> > +            # port@3 is DVENC, not supported yet
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a7790
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: Functional clock for DU2
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +            - description: DU_DOTCLKIN2 input clock
> > +
> > +        clock-names:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - const: du.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +
> > +        interrupts:
> > +          maxItems: 3
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: LVDS 0
> > +            port@2:
> > +              description: LVDS 1
> > +            # port@3 is TCON, not supported yet
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a7795
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 4
> > +          maxItems: 8
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: Functional clock for DU2
> > +            - description: Functional clock for DU4
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +            - description: DU_DOTCLKIN2 input clock
> > +            - description: DU_DOTCLKIN3 input clock
> > +
> > +        clock-names:
> > +          minItems: 4
> > +          maxItems: 8
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - const: du.2
> > +            - const: du.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +              - dclkin.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +              - dclkin.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +              - dclkin.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +              - dclkin.3
> > +
> > +        interrupts:
> > +          maxItems: 4
> > +
> > +        resets:
> > +          maxItems: 2
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +            - const: du.2
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: HDMI 0
> > +            port@2:
> > +              description: HDMI 1
> > +            port@3:
> > +              description: LVDS 0
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +            - port@3
> > +
> > +        renesas,cmms:
> > +          minItems: 4
> > +
> > +        renesas,vsps:
> > +          minItems: 4
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +        - renesas,vsps
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a774a1
> > +              - renesas,du-r8a7796
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: Functional clock for DU2
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +            - description: DU_DOTCLKIN2 input clock
> > +
> > +        clock-names:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - const: du.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.2
> > +
> > +        interrupts:
> > +          maxItems: 3
> > +
> > +        resets:
> > +          maxItems: 2
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +            - const: du.2
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: HDMI 0
> > +            port@2:
> > +              description: LVDS 0
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +
> > +        renesas,cmms:
> > +          minItems: 3
> > +
> > +        renesas,vsps:
> > +          minItems: 3
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +        - renesas,vsps
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a774b1
> > +              - renesas,du-r8a77965
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: Functional clock for DU3
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +            - description: DU_DOTCLKIN3 input clock
> > +
> > +        clock-names:
> > +          minItems: 3
> > +          maxItems: 6
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - const: du.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.3
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +              - dclkin.3
> > +
> > +        interrupts:
> > +          maxItems: 3
> > +
> > +        resets:
> > +          maxItems: 2
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +            - const: du.3
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: HDMI 0
> > +            port@2:
> > +              description: LVDS 0
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +
> > +        renesas,cmms:
> > +          minItems: 3
> > +
> > +        renesas,vsps:
> > +          minItems: 3
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +        - renesas,vsps
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a77970
> > +              - renesas,du-r8a77980
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 1
> > +          maxItems: 2
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: DU_DOTCLKIN0 input clock
> > +
> > +        clock-names:
> > +          minItems: 1
> > +          maxItems: 2
> > +          items:
> > +            - const: du.0
> > +            - const: dclkin.0
> > +
> > +        interrupts:
> > +          maxItems: 1
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: LVDS 0
> > +            port@2: false
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +
> > +        renesas,vsps:
> > +          minItems: 1
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +        - renesas,vsps
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,du-r8a774c0
> > +              - renesas,du-r8a77990
> > +              - renesas,du-r8a77995
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - description: Functional clock for DU0
> > +            - description: Functional clock for DU1
> > +            - description: DU_DOTCLKIN0 input clock
> > +            - description: DU_DOTCLKIN1 input clock
> > +
> > +        clock-names:
> > +          minItems: 2
> > +          maxItems: 4
> > +          items:
> > +            - const: du.0
> > +            - const: du.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +            - enum:
> > +              - dclkin.0
> > +              - dclkin.1
> > +
> > +        interrupts:
> > +          maxItems: 2
> > +
> > +        resets:
> > +          maxItems: 1
> > +
> > +        reset-names:
> > +          items:
> > +            - const: du.0
> > +
> > +        ports:
> > +          properties:
> > +            port@0:
> > +              description: DPAD 0
> > +            port@1:
> > +              description: LVDS 0
> > +            port@2:
> > +              description: LVDS 1
> > +            # port@3 is TCON, not supported yet
> > +            port@3: false
> > +
> > +          required:
> > +            - port@0
> > +            - port@1
> > +            - port@2
> > +
> > +        renesas,cmms:
> > +          minItems: 2
> > +
> > +        renesas,vsps:
> > +          minItems: 2
> > +
> > +      required:
> > +        - clock-names
> > +        - interrupts
> > +        - resets
> > +        - reset-names
> > +        - renesas,vsps
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  # R-Car H3 ES2.0 DU
> > +  - |
> > +    #include <dt-bindings/clock/renesas-cpg-mssr.h>
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +    display@feb00000 {
> > +        compatible = "renesas,du-r8a7795";
> > +        reg = <0xfeb00000 0x80000>;
> > +        interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
> > +                     <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
> > +        clocks = <&cpg CPG_MOD 724>,
> > +                 <&cpg CPG_MOD 723>,
> > +                 <&cpg CPG_MOD 722>,
> > +                 <&cpg CPG_MOD 721>;
> > +        clock-names = "du.0", "du.1", "du.2", "du.3";
> > +        resets = <&cpg 724>, <&cpg 722>;
> > +        reset-names = "du.0", "du.2";
> > +
> > +        renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
> > +        renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
> > +
> > +        ports {
> > +            #address-cells = <1>;
> > +            #size-cells = <0>;
> > +
> > +            port@0 {
> > +                reg = <0>;
> > +                endpoint {
> > +                    remote-endpoint = <&adv7123_in>;
> > +                };
> > +            };
> > +            port@1 {
> > +                reg = <1>;
> > +                endpoint {
> > +                    remote-endpoint = <&dw_hdmi0_in>;
> > +                };
> > +            };
> > +            port@2 {
> > +                reg = <2>;
> > +                endpoint {
> > +                    remote-endpoint = <&dw_hdmi1_in>;
> > +                };
> > +            };
> > +            port@3 {
> > +                reg = <3>;
> > +                endpoint {
> > +                    remote-endpoint = <&lvds0_in>;
> > +                };
> > +            };
> > +        };
> > +    };
> > +
> > +...
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt
deleted file mode 100644
index 51cd4d162770..000000000000
--- a/Documentation/devicetree/bindings/display/renesas,du.txt
+++ /dev/null
@@ -1,139 +0,0 @@ 
-* Renesas R-Car Display Unit (DU)
-
-Required Properties:
-
-  - compatible: must be one of the following.
-    - "renesas,du-r8a7743" for R8A7743 (RZ/G1M) compatible DU
-    - "renesas,du-r8a7744" for R8A7744 (RZ/G1N) compatible DU
-    - "renesas,du-r8a7745" for R8A7745 (RZ/G1E) compatible DU
-    - "renesas,du-r8a77470" for R8A77470 (RZ/G1C) compatible DU
-    - "renesas,du-r8a774a1" for R8A774A1 (RZ/G2M) compatible DU
-    - "renesas,du-r8a774b1" for R8A774B1 (RZ/G2N) compatible DU
-    - "renesas,du-r8a774c0" for R8A774C0 (RZ/G2E) compatible DU
-    - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU
-    - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU
-    - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU
-    - "renesas,du-r8a7792" for R8A7792 (R-Car V2H) compatible DU
-    - "renesas,du-r8a7793" for R8A7793 (R-Car M2-N) compatible DU
-    - "renesas,du-r8a7794" for R8A7794 (R-Car E2) compatible DU
-    - "renesas,du-r8a7795" for R8A7795 (R-Car H3) compatible DU
-    - "renesas,du-r8a7796" for R8A7796 (R-Car M3-W) compatible DU
-    - "renesas,du-r8a77965" for R8A77965 (R-Car M3-N) compatible DU
-    - "renesas,du-r8a77970" for R8A77970 (R-Car V3M) compatible DU
-    - "renesas,du-r8a77980" for R8A77980 (R-Car V3H) compatible DU
-    - "renesas,du-r8a77990" for R8A77990 (R-Car E3) compatible DU
-    - "renesas,du-r8a77995" for R8A77995 (R-Car D3) compatible DU
-
-  - reg: the memory-mapped I/O registers base address and length
-
-  - interrupts: Interrupt specifiers for the DU interrupts.
-
-  - clocks: A list of phandles + clock-specifier pairs, one for each entry in
-    the clock-names property.
-  - clock-names: Name of the clocks. This property is model-dependent.
-    - R8A7779 uses a single functional clock. The clock doesn't need to be
-      named.
-    - All other DU instances use one functional clock per channel The
-      functional clocks must be named "du.x" with "x" being the channel
-      numerical index.
-    - In addition to the functional clocks, all DU versions also support
-      externally supplied pixel clocks. Those clocks are optional. When
-      supplied they must be named "dclkin.x" with "x" being the input clock
-      numerical index.
-
-  - renesas,cmms: A list of phandles to the CMM instances present in the SoC,
-    one for each available DU channel. The property shall not be specified for
-    SoCs that do not provide any CMM (such as V3M and V3H).
-
-  - renesas,vsps: A list of phandle and channel index tuples to the VSPs that
-    handle the memory interfaces for the DU channels. The phandle identifies the
-    VSP instance that serves the DU channel, and the channel index identifies
-    the LIF instance in that VSP.
-
-Optional properties:
-  - resets: A list of phandle + reset-specifier pairs, one for each entry in
-    the reset-names property.
-  - reset-names: Names of the resets. This property is model-dependent.
-    - All but R8A7779 use one reset for a group of one or more successive
-      channels. The resets must be named "du.x" with "x" being the numerical
-      index of the lowest channel in the group.
-
-Required nodes:
-
-The connections to the DU output video ports are modeled using the OF graph
-bindings specified in Documentation/devicetree/bindings/graph.txt.
-
-The following table lists for each supported model the port number
-corresponding to each DU output.
-
-                        Port0          Port1          Port2          Port3
------------------------------------------------------------------------------
- R8A7743 (RZ/G1M)       DPAD 0         LVDS 0         -              -
- R8A7744 (RZ/G1N)       DPAD 0         LVDS 0         -              -
- R8A7745 (RZ/G1E)       DPAD 0         DPAD 1         -              -
- R8A77470 (RZ/G1C)      DPAD 0         DPAD 1         LVDS 0         -
- R8A774A1 (RZ/G2M)      DPAD 0         HDMI 0         LVDS 0         -
- R8A774B1 (RZ/G2N)      DPAD 0         HDMI 0         LVDS 0         -
- R8A774C0 (RZ/G2E)      DPAD 0         LVDS 0         LVDS 1         -
- R8A7779 (R-Car H1)     DPAD 0         DPAD 1         -              -
- R8A7790 (R-Car H2)     DPAD 0         LVDS 0         LVDS 1         -
- R8A7791 (R-Car M2-W)   DPAD 0         LVDS 0         -              -
- R8A7792 (R-Car V2H)    DPAD 0         DPAD 1         -              -
- R8A7793 (R-Car M2-N)   DPAD 0         LVDS 0         -              -
- R8A7794 (R-Car E2)     DPAD 0         DPAD 1         -              -
- R8A7795 (R-Car H3)     DPAD 0         HDMI 0         HDMI 1         LVDS 0
- R8A7796 (R-Car M3-W)   DPAD 0         HDMI 0         LVDS 0         -
- R8A77965 (R-Car M3-N)  DPAD 0         HDMI 0         LVDS 0         -
- R8A77970 (R-Car V3M)   DPAD 0         LVDS 0         -              -
- R8A77980 (R-Car V3H)   DPAD 0         LVDS 0         -              -
- R8A77990 (R-Car E3)    DPAD 0         LVDS 0         LVDS 1         -
- R8A77995 (R-Car D3)    DPAD 0         LVDS 0         LVDS 1         -
-
-
-Example: R8A7795 (R-Car H3) ES2.0 DU
-
-	du: display@feb00000 {
-		compatible = "renesas,du-r8a7795";
-		reg = <0 0xfeb00000 0 0x80000>;
-		interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&cpg CPG_MOD 724>,
-			 <&cpg CPG_MOD 723>,
-			 <&cpg CPG_MOD 722>,
-			 <&cpg CPG_MOD 721>;
-		clock-names = "du.0", "du.1", "du.2", "du.3";
-		resets = <&cpg 724>, <&cpg 722>;
-		reset-names = "du.0", "du.2";
-		renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
-		renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
-
-		ports {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			port@0 {
-				reg = <0>;
-				du_out_rgb: endpoint {
-				};
-			};
-			port@1 {
-				reg = <1>;
-				du_out_hdmi0: endpoint {
-					remote-endpoint = <&dw_hdmi0_in>;
-				};
-			};
-			port@2 {
-				reg = <2>;
-				du_out_hdmi1: endpoint {
-					remote-endpoint = <&dw_hdmi1_in>;
-				};
-			};
-			port@3 {
-				reg = <3>;
-				du_out_lvds0: endpoint {
-				};
-			};
-		};
-	};
diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
new file mode 100644
index 000000000000..ca48065afe1f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/renesas,du.yaml
@@ -0,0 +1,915 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/renesas,du.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car Display Unit (DU)
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+
+description: |
+  These DT bindings describe the Display Unit embedded in the Renesas R-Car
+  Gen1, R-Car Gen2, R-Car Gen3, RZ/G1 and RZ/G2 SoCs.
+
+properties:
+  compatible:
+    enum:
+      - renesas,du-r8a7743 # for RZ/G1M compatible DU
+      - renesas,du-r8a7744 # for RZ/G1N compatible DU
+      - renesas,du-r8a7745 # for RZ/G1E compatible DU
+      - renesas,du-r8a77470 # for RZ/G1C compatible DU
+      - renesas,du-r8a774a1 # for RZ/G2M compatible DU
+      - renesas,du-r8a774b1 # for RZ/G2N compatible DU
+      - renesas,du-r8a774c0 # for RZ/G2E compatible DU
+      - renesas,du-r8a7779 # for R-Car H1 compatible DU
+      - renesas,du-r8a7790 # for R-Car H2 compatible DU
+      - renesas,du-r8a7791 # for R-Car M2-W compatible DU
+      - renesas,du-r8a7792 # for R-Car V2H compatible DU
+      - renesas,du-r8a7793 # for R-Car M2-N compatible DU
+      - renesas,du-r8a7794 # for R-Car E2 compatible DU
+      - renesas,du-r8a7795 # for R-Car H3 compatible DU
+      - renesas,du-r8a7796 # for R-Car M3-W compatible DU
+      - renesas,du-r8a77965 # for R-Car M3-N compatible DU
+      - renesas,du-r8a77970 # for R-Car V3M compatible DU
+      - renesas,du-r8a77980 # for R-Car V3H compatible DU
+      - renesas,du-r8a77990 # for R-Car E3 compatible DU
+      - renesas,du-r8a77995 # for R-Car D3 compatible DU
+
+  reg:
+    maxItems: 1
+
+  # See compatible-specific constraints below.
+  clocks: true
+  clock-names: true
+  interrupts: true
+  resets: true
+  reset-names: true
+
+  ports:
+    type: object
+    description: |
+      The connections to the DU output video ports are modeled using the OF
+      graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+      The number of ports and their assignment are model-dependent. Each port
+      shall have a single endpoint.
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      "^port@[0-3]$":
+        type: object
+
+        properties:
+          reg:
+            maxItems: 1
+
+          endpoint:
+            type: object
+
+            properties:
+              remote-endpoint:
+                $ref: /schemas/types.yaml#/definitions/phandle
+
+            required:
+              - remote-endpoint
+
+            additionalProperties: false
+
+        additionalProperties: false
+
+    required:
+      - port@0
+      - port@1
+
+    additionalProperties: false
+
+  renesas,cmms:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description:
+      A list of phandles to the CMM instances present in the SoC, one for each
+      available DU channel.
+
+  renesas,vsps:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description:
+      A list of phandle and channel index tuples to the VSPs that handle the
+      memory interfaces for the DU channels. The phandle identifies the VSP
+      instance that serves the DU channel, and the channel index identifies
+      the LIF instance in that VSP.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+  - resets
+  - ports
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,du-r8a7779
+    then:
+      properties:
+        clocks:
+          minItems: 1
+          maxItems: 3
+          items:
+            - description: Functional clock
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 1
+          maxItems: 3
+          items:
+            - const: du.0
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 1
+
+        resets:
+          maxItems: 1
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: DPAD 1
+            # port@2 is TCON, not supported yet
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+
+      required:
+        - interrupts
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a7743
+              - renesas,du-r8a7744
+              - renesas,du-r8a7791
+              - renesas,du-r8a7793
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 2
+          maxItems: 4
+          items:
+            - const: du.0
+            - const: du.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 2
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: LVDS 0
+            # port@2 is TCON, not supported yet
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a7745
+              - renesas,du-r8a7792
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 2
+          maxItems: 4
+          items:
+            - const: du.0
+            - const: du.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 2
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: DPAD 1
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a7794
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 2
+          maxItems: 4
+          items:
+            - const: du.0
+            - const: du.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 2
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: DPAD 1
+            # port@2 is TCON, not supported yet
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a77470
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 2
+          maxItems: 4
+          items:
+            - const: du.0
+            - const: du.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 2
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: DPAD 1
+            port@2:
+              description: LVDS 0
+            # port@3 is DVENC, not supported yet
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a7790
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 6
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: Functional clock for DU2
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+            - description: DU_DOTCLKIN2 input clock
+
+        clock-names:
+          minItems: 3
+          maxItems: 6
+          items:
+            - const: du.0
+            - const: du.1
+            - const: du.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+
+        interrupts:
+          maxItems: 3
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: LVDS 0
+            port@2:
+              description: LVDS 1
+            # port@3 is TCON, not supported yet
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a7795
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 8
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: Functional clock for DU2
+            - description: Functional clock for DU4
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+            - description: DU_DOTCLKIN2 input clock
+            - description: DU_DOTCLKIN3 input clock
+
+        clock-names:
+          minItems: 4
+          maxItems: 8
+          items:
+            - const: du.0
+            - const: du.1
+            - const: du.2
+            - const: du.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+              - dclkin.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+              - dclkin.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+              - dclkin.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+              - dclkin.3
+
+        interrupts:
+          maxItems: 4
+
+        resets:
+          maxItems: 2
+
+        reset-names:
+          items:
+            - const: du.0
+            - const: du.2
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: HDMI 0
+            port@2:
+              description: HDMI 1
+            port@3:
+              description: LVDS 0
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+            - port@3
+
+        renesas,cmms:
+          minItems: 4
+
+        renesas,vsps:
+          minItems: 4
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a774a1
+              - renesas,du-r8a7796
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 6
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: Functional clock for DU2
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+            - description: DU_DOTCLKIN2 input clock
+
+        clock-names:
+          minItems: 3
+          maxItems: 6
+          items:
+            - const: du.0
+            - const: du.1
+            - const: du.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.2
+
+        interrupts:
+          maxItems: 3
+
+        resets:
+          maxItems: 2
+
+        reset-names:
+          items:
+            - const: du.0
+            - const: du.2
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: HDMI 0
+            port@2:
+              description: LVDS 0
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+
+        renesas,cmms:
+          minItems: 3
+
+        renesas,vsps:
+          minItems: 3
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a774b1
+              - renesas,du-r8a77965
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 6
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: Functional clock for DU3
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+            - description: DU_DOTCLKIN3 input clock
+
+        clock-names:
+          minItems: 3
+          maxItems: 6
+          items:
+            - const: du.0
+            - const: du.1
+            - const: du.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.3
+            - enum:
+              - dclkin.0
+              - dclkin.1
+              - dclkin.3
+
+        interrupts:
+          maxItems: 3
+
+        resets:
+          maxItems: 2
+
+        reset-names:
+          items:
+            - const: du.0
+            - const: du.3
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: HDMI 0
+            port@2:
+              description: LVDS 0
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+
+        renesas,cmms:
+          minItems: 3
+
+        renesas,vsps:
+          minItems: 3
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a77970
+              - renesas,du-r8a77980
+    then:
+      properties:
+        clocks:
+          minItems: 1
+          maxItems: 2
+          items:
+            - description: Functional clock for DU0
+            - description: DU_DOTCLKIN0 input clock
+
+        clock-names:
+          minItems: 1
+          maxItems: 2
+          items:
+            - const: du.0
+            - const: dclkin.0
+
+        interrupts:
+          maxItems: 1
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: LVDS 0
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+
+        renesas,vsps:
+          minItems: 1
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a774c0
+              - renesas,du-r8a77990
+              - renesas,du-r8a77995
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 4
+          items:
+            - description: Functional clock for DU0
+            - description: Functional clock for DU1
+            - description: DU_DOTCLKIN0 input clock
+            - description: DU_DOTCLKIN1 input clock
+
+        clock-names:
+          minItems: 2
+          maxItems: 4
+          items:
+            - const: du.0
+            - const: du.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+            - enum:
+              - dclkin.0
+              - dclkin.1
+
+        interrupts:
+          maxItems: 2
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DPAD 0
+            port@1:
+              description: LVDS 0
+            port@2:
+              description: LVDS 1
+            # port@3 is TCON, not supported yet
+            port@3: false
+
+          required:
+            - port@0
+            - port@1
+            - port@2
+
+        renesas,cmms:
+          minItems: 2
+
+        renesas,vsps:
+          minItems: 2
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
+additionalProperties: false
+
+examples:
+  # R-Car H3 ES2.0 DU
+  - |
+    #include <dt-bindings/clock/renesas-cpg-mssr.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    display@feb00000 {
+        compatible = "renesas,du-r8a7795";
+        reg = <0xfeb00000 0x80000>;
+        interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&cpg CPG_MOD 724>,
+                 <&cpg CPG_MOD 723>,
+                 <&cpg CPG_MOD 722>,
+                 <&cpg CPG_MOD 721>;
+        clock-names = "du.0", "du.1", "du.2", "du.3";
+        resets = <&cpg 724>, <&cpg 722>;
+        reset-names = "du.0", "du.2";
+
+        renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
+        renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                endpoint {
+                    remote-endpoint = <&adv7123_in>;
+                };
+            };
+            port@1 {
+                reg = <1>;
+                endpoint {
+                    remote-endpoint = <&dw_hdmi0_in>;
+                };
+            };
+            port@2 {
+                reg = <2>;
+                endpoint {
+                    remote-endpoint = <&dw_hdmi1_in>;
+                };
+            };
+            port@3 {
+                reg = <3>;
+                endpoint {
+                    remote-endpoint = <&lvds0_in>;
+                };
+            };
+        };
+    };
+
+...