Re: [PATCH v2 2/2] media: dt-bindings: media: i2c: Add bindings for ADDI9036

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On Fri, Oct 02, 2020 at 04:35:17PM +0300, Bogdan Togorean wrote:
> Add YAML device tree bindings for Analog Devices Inc. ADDI9036 CCD TOF
> front-end.
> 
> Signed-off-by: Bogdan Togorean <bogdan.togorean@xxxxxxxxxx>
> ---
> v2: added reg property description
> ---
>  .../bindings/media/i2c/adi,addi9036.yaml      | 76 +++++++++++++++++++
>  1 file changed, 76 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/adi,addi9036.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/adi,addi9036.yaml b/Documentation/devicetree/bindings/media/i2c/adi,addi9036.yaml
> new file mode 100644
> index 000000000000..7c4af704db98
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/adi,addi9036.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/adi,addi9036.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices ADDI9036 VGA CCD Time of Flight Sensor
> +
> +maintainers:
> +  - Bogdan Togorean <bogdan.togorean@xxxxxxxxxx>
> +
> +description: |-
> +  The ADDI9036 is a complete, 45 MHz, front-end solution for charge coupled
> +  device (CCD) time of flight (TOF) imaging applications. It is programmable
> +  through I2C interface. Image data is sent through MIPI CSI-2 2 lanes and
> +  can output two RAW12 packed data streams. One is IR and the other is Depth.
> +  Each data stream is on a separate or same MIPI Virtual Channel, depending
> +  on configuration and each have 640x480 resolution.
> +
> +properties:
> +  compatible:
> +    const: adi,addi9036
> +
> +  reg:
> +    description: I2C device address

Can drop this.

> +    maxItems: 1
> +
> +  reset-gpios:

maxItems: 1

> +    description: |-
> +      Reference to the GPIO connected to the RST/SYNC pin, if any.
> +      Must be released (set high) after all supplies are applied.
> +
> +  # See ../video-interfaces.txt for more details
> +  port:
> +    type: object
> +    properties:
> +      endpoint:
> +        type: object
> +        properties:
> +          data-lanes:
> +            description: |-
> +              The sensor supports two-lane operation.
> +              For two-lane operation the property must be set to <1 2>.
> +            items:
> +              - const: 1
> +              - const: 2

If this is the only possible setting, then why does it need to be in DT?

> +
> +required:
> +  - compatible
> +  - reg
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c0 {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        addi9036: addi9036_tof@64 {
> +            compatible = "adi,addi9036";
> +            reg = <0x64>;
> +
> +            reset-gpios = <&gpio 41 1>;
> +
> +            port {
> +                addi9036_ep: endpoint {
> +                    remote-endpoint = <&csi1_ep>;
> +                    data-lanes = <1 2>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> -- 
> 2.28.0
> 



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