linux-kernel - Re: [RFC 02/12] dt-bindings: i2c: maxim,max96712: add a couple of new properties

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Message-ID: <20250203220050.GA114735-robh@kernel.org>
Date: Mon, 3 Feb 2025 16:00:50 -0600
From: Rob Herring <robh@...nel.org>
To: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
Cc: Niklas Söderlund <niklas.soderlund@...natech.se>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Subject: Re: [RFC 02/12] dt-bindings: i2c: maxim,max96712: add a couple of
 new properties

On Fri, Jan 31, 2025 at 06:33:56PM +0200, Laurentiu Palcu wrote:
> Add new properties for configuring FSYNC functionality and operation
> mode, as the chip can support both tunneling and pixel modes.
> 
> While at it, add the maxim,max96724 compatible to the bindings since it
> was already added in the driver some time back.

I don't see that change.

> 
> Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
> ---
>  .../bindings/media/i2c/maxim,max96712.yaml    | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml
> index 26f85151afbd3..410004f3a032f 100644
> --- a/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml
> +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml
> @@ -36,6 +36,48 @@ properties:
>  
>    enable-gpios: true
>  
> +  '#gpio-cells':
> +    const: 2
> +    description: |

Don't need '|' if no formatting.

> +      First cell is the GPIO pin number, second cell is the flags. The GPIO pin
> +      number must be in range of [0, 11].
> +
> +  gpio-controller: true
> +
> +  maxim,operation-mode:
> +    description: |
> +      Deserializer mode of operation: 0 - tunneling mode, 1 - pixel mode
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [0, 1]
> +    default: 0
> +
> +  maxim,fsync-config:
> +    description: |
> +      Frame synchronization (FSYNC) is used to align images sent from multiple
> +      sources in surround-view applications and is required for concatenation.
> +      In FSYNC mode, the deserializer sends a sync signal to each serializer;
> +      the serializers then send the signal to the connected sensor.
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 2
> +    items:
> +      - description: |
> +          FSYNC mode:
> +            0 - off, no FSYNC generation
> +            1 - internal, GPIO is not used as input or output
> +            2 - master, GPIO pin is used to drive a slave deserializer
> +            3 - slave, GPIO pin is used as FSYNC input driven by a master device
> +        enum: [0, 1, 2, 3]
> +        default: 0
> +      - description: |
> +          FSYNC TX ID: GPIO ID used for transmitting FSYNC signal
> +        minimum: 0
> +        maximum: 31
> +        default: 0
> +      - description: |
> +          FSYNC pin: 0 - MFP0, 1 - MFP7. Not used for internal mode.
> +        enum: [0, 1]
> +        default: 0
> +
>    ports:
>      $ref: /schemas/graph.yaml#/properties/ports
>  
> @@ -92,6 +134,9 @@ examples:
>      #include <dt-bindings/gpio/gpio.h>
>      #include <dt-bindings/media/video-interfaces.h>
>  
> +    maxim,operation-mode = <0>;
> +    maxim,fsync-config = <1 0>;
> +
>      i2c@...08000 {
>              #address-cells = <1>;
>              #size-cells = <0>;
> -- 
> 2.44.1
>