linux-kernel - Re: [PATCH v3 1/2] dt-bindings: display: bridge: Add documentation for Toshiba tc358768

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Date:   Mon, 27 Jan 2020 12:49:39 -0600
From:   Rob Herring <robh@...nel.org>
To:     Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     airlied@...ux.ie, daniel@...ll.ch, mark.rutland@....com,
        a.hajda@...sung.com, narmstrong@...libre.com,
        tomi.valkeinen@...com, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net
Subject: Re: [PATCH v3 1/2] dt-bindings: display: bridge: Add documentation
 for Toshiba tc358768

On Mon, Jan 27, 2020 at 12:56:33PM +0200, Peter Ujfalusi wrote:
> TC358768/TC358778 is a Parallel RGB to MIPI DSI bridge.
> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
>  .../display/bridge/toshiba,tc358768.yaml      | 158 ++++++++++++++++++
>  1 file changed, 158 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/toshiba,tc358768.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358768.yaml b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358768.yaml
> new file mode 100644
> index 000000000000..8dd8cca39a77
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358768.yaml
> @@ -0,0 +1,158 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/toshiba,tc358768.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Toschiba TC358768/TC358778 Parallel RGB to MIPI DSI bridge
> +
> +maintainers:
> +  - Peter Ujfalusi <peter.ujfalusi@...com>
> +
> +description: |
> +  The TC358768/TC358778 is bridge device which converts RGB to DSI.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - toshiba,tc358768
> +      - toshiba,tc358778
> +
> +  reg:
> +    maxItems: 1
> +    description: base I2C address of the device
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: GPIO connected to active low RESX pin
> +
> +  vddc-supply:
> +    description: Regulator for 1.2V internal core power.
> +
> +  vddmipi-supply:
> +    description: Regulator for 1.2V for the MIPI.
> +
> +  vddio-supply:
> +    description: Regulator for 1.8V - 3.3V IO power.
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: refclk
> +
> +  ports:
> +    type: object
> +
> +    properties:
> +      "#address-cells":
> +        const: 1
> +
> +      "#size-cells":
> +        const: 0
> +
> +      port@0:
> +        type: object
> +        additionalProperties: false
> +
> +        description: |
> +          Video port for RGB input
> +
> +        properties:
> +          reg:
> +            const: 0
> +
> +        patternProperties:
> +          endpoint:
> +            type: object
> +            additionalProperties: false
> +
> +            properties:
> +              data-lines:
> +                enum: [ 16, 18, 24 ]
> +
> +              remote-endpoint: true
> +
> +        required:
> +          - reg
> +
> +      port@1:
> +        type: object
> +        additionalProperties: false
> +
> +        description: |
> +          Video port for DSI output (panel or connector).
> +
> +        properties:
> +          reg:
> +            const: 1
> +
> +        patternProperties:
> +          endpoint:
> +            type: object
> +            additionalProperties: false
> +
> +            properties:
> +              remote-endpoint: true
> +
> +        required:
> +          - reg
> +
> +    required:
> +      - "#address-cells"
> +      - "#size-cells"
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - reg
> +  - vddc-supply
> +  - vddmipi-supply
> +  - vddio-supply
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c1 {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      dsi_bridge: tc358768@0e {

Generic node names and no leading 0s:

dsi-bridge@e

> +        compatible = "toshiba,tc358768";
> +        reg = <0x0e>;
> +
> +        clocks = <&tc358768_refclk>;
> +        clock-names = "refclk";
> +
> +        /* GPIO line is inverted before going to the bridge */
> +        reset-gpios = <&pcf_display_board 0 1 /* GPIO_ACTIVE_LOW */>;

You just need to add the include for the define to work.

> +
> +        vddc-supply = <&v1_2d>;
> +        vddmipi-supply = <&v1_2d>;
> +        vddio-supply = <&v3_3d>;
> +
> +        dsi_bridge_ports: ports {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          port@0 {
> +            reg = <0>;
> +            rgb_in: endpoint {
> +              remote-endpoint = <&dpi_out>;
> +              data-lines = <24>;
> +            };
> +          };
> +
> +          port@1 {
> +            reg = <1>;
> +            dsi_out: endpoint {
> +              remote-endpoint = <&lcd_in>;
> +            };
> +          };
> +        };
> +      };
> +    };
> +    
> -- 
> Peter
> 
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>