linux-kernel - Re: [PATCH v6 1/4] dt-bindings: media: imx258: add bindings for IMX258 sensor

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Message-ID: <20210122091822.GB27155@paasikivi.fi.intel.com>
Date:   Fri, 22 Jan 2021 11:18:22 +0200
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v6 1/4] dt-bindings: media: imx258: add bindings for
 IMX258 sensor

Hi Krysztof,

On Wed, Nov 18, 2020 at 09:27:12PM +0100, Krzysztof Kozlowski wrote:
> Add bindings for the IMX258 camera sensor.  The bindings, just like the
> driver, are quite limited, e.g. do not support regulator supplies.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> Reviewed-by: Rob Herring <robh@...nel.org>
> 
> ---
> 
> Changes since v4:
> 1. Add clock-lanes,
> 2. Add Rob's review,
> 3. Add one more example and extend existing one,
> 4. Add common clock properties (assigned-*).
> 
> Changes since v3:
> 1. Document also two lane setup.
> 
> Changes since v2:
> 1. Remove clock-frequency, add reset GPIOs, add supplies.
> 2. Use additionalProperties.
> 
> Changes since v1:
> 1. None
> ---
>  .../devicetree/bindings/media/i2c/imx258.yaml | 140 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 141 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/imx258.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/imx258.yaml b/Documentation/devicetree/bindings/media/i2c/imx258.yaml
> new file mode 100644
> index 000000000000..4a3471fb88a1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/imx258.yaml
> @@ -0,0 +1,140 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/imx258.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sony IMX258 13 Mpixel CMOS Digital Image Sensor
> +
> +maintainers:
> +  - Krzysztof Kozlowski <krzk@...nel.org>
> +
> +description: |-
> +  IMX258 is a diagonal 5.867mm (Type 1/3.06) 13 Mega-pixel CMOS active pixel
> +  type stacked image sensor with a square pixel array of size 4208 x 3120. It
> +  is programmable through I2C interface.  Image data is sent through MIPI
> +  CSI-2.
> +
> +properties:
> +  compatible:
> +    const: sony,imx258
> +
> +  assigned-clocks: true
> +  assigned-clock-parents: true
> +  assigned-clock-rates: true
> +
> +  clocks:
> +    description:
> +      Clock frequency from 6 to 27 MHz.
> +    maxItems: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    description: |-
> +      Reference to the GPIO connected to the XCLR pin, if any.
> +
> +  vana-supply:
> +    description:
> +      Analog voltage (VANA) supply, 2.7 V
> +
> +  vdig-supply:
> +    description:
> +      Digital I/O voltage (VDIG) supply, 1.2 V
> +
> +  vif-supply:
> +    description:
> +      Interface voltage (VIF) supply, 1.8 V
> +
> +  # See ../video-interfaces.txt for more details
> +  port:
> +    type: object
> +    properties:
> +      endpoint:
> +        type: object
> +        properties:
> +          clock-lanes:
> +            const: 0

This is redundant. Please remove, same for the examples. Can be a separate
patch, too.

With this change the set seems good to me.

-- 
Sakari Ailus