linux-kernel - Re: [PATCH 3/5] dt-bindings: i2c: maxim,max96717: add new properties

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Message-ID: <20250211-ecard-dallying-94ced9b29fd9@spud>
Date: Tue, 11 Feb 2025 18:46:10 +0000
From: Conor Dooley <conor@...nel.org>
To: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
Cc: Julien Massot <julien.massot@...labora.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...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
Subject: Re: [PATCH 3/5] dt-bindings: i2c: maxim,max96717: add new properties

On Fri, Feb 07, 2025 at 01:29:55PM +0200, Laurentiu Palcu wrote:
> Add 'maxim,override-mode' property to allow the user to toggle the pin
> configured chip operation mode and 'maxim,fsync-config' to configure the
> chip for relaying a frame synchronization signal, received from
> deserializer, to the attached sensor. The latter is needed for
> synchronizing the images in multi-sensor setups.
> 
> Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
> ---
>  .../bindings/media/i2c/maxim,max96717.yaml    | 28 +++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
> index d1e8ba6e368ec..fae578d55fd4d 100644
> --- a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
> +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml
> @@ -42,10 +42,35 @@ properties:
>        number must be in range of [0, 10].
>  
>    gpio-controller: true
> +  gpio-reserved-ranges: true
>  
>    '#clock-cells':
>      const: 0
>  
> +  maxim,override-mode:
> +    description: Toggle the operation mode from the pin configured one.
> +    type: boolean

type: flag


> +  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
> +    items:
> +      - description: FSYNC RX ID, needs to match the TX ID configured in the deserializer.
> +        minimum: 0
> +        maximum: 31
> +        default: 0
> +      - description:
> +          Output GPIO pin used for sending the FSYNC to the sensor. The pin, however, needs
> +          to be excluded from the gpiochip using the gpio-reserved-ranges property since
> +          it will be used exclusively for FSYNC generation.
> +        minimum: 0
> +        maximum: 10
> +        default: 0
> +
>    reg:
>      maxItems: 1
>  
> @@ -113,6 +138,9 @@ examples:
>              #gpio-cells = <2>;
>              #clock-cells = <0>;
>  
> +            gpio-reserved-ranges = <0 1>;
> +            maxim,fsync-config = <0 0>;
> +
>              ports {
>                  #address-cells = <1>;
>                  #size-cells = <0>;
> -- 
> 2.34.1
> 

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