linux-kernel - Re: [PATCH v2 1/5] dt-bindings: media: add bindings for dcmipp driver

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Message-ID: <20230829-juror-decathlon-f7b252a330bf@spud>
Date:   Tue, 29 Aug 2023 16:00:06 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Alain Volmat <alain.volmat@...s.st.com>
Cc:     Hugues Fruchet <hugues.fruchet@...s.st.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Dan Scally <dan.scally@...asonboard.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/5] dt-bindings: media: add bindings for dcmipp driver

Hey,

On Tue, Aug 29, 2023 at 03:23:45PM +0200, Alain Volmat wrote:
> Add the yaml binding for the DCMIPP driver.

Please drop all mentions of drivers, bindings are for hardware.

> 
> Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
> ---
>  .../bindings/media/st,stm32-dcmipp.yaml       | 95 +++++++++++++++++++
>  1 file changed, 95 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dcmipp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmipp.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmipp.yaml
> new file mode 100644
> index 000000000000..63f03a1c42b6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmipp.yaml
> @@ -0,0 +1,95 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/st,stm32-dcmipp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: STMicroelectronics STM32 DCMIPP Digital Camera Memory Interface Pixel Processor binding

s/binding// to appease the bot.

> +
> +maintainers:
> +  - Hugues Fruchet <hugues.fruchet@...s.st.com>
> +  - Alain Volmat <alain.volmat@...s.st.com>
> +
> +properties:
> +  compatible:
> +    const: st,stm32mp13-dcmipp
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: kclk

Can drop the items: here since you only have one. The name is also
pretty pointless when you only have one...

> +
> +  resets:
> +    maxItems: 1
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/$defs/port-base
> +    unevaluatedProperties: false
> +    description:
> +      DCMIPP supports a single port node with parallel bus.
> +
> +    properties:
> +      endpoint:
> +        $ref: video-interfaces.yaml#
> +        unevaluatedProperties: false
> +
> +        properties:
> +          bus-type:
> +            enum: [5, 6]
> +            default: 5
> +
> +          bus-width:
> +            enum: [8, 10, 12, 14]
> +            default: 8
> +
> +          pclk-sample: true
> +          hsync-active: true
> +          vsync-active: true
> +
> +        required:
> +          - pclk-sample
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +  - resets
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/stm32mp13-clks.h>
> +    #include <dt-bindings/reset/stm32mp13-resets.h>
> +    dcmipp: dcmipp@...00000 {

Neither of the labels here are used AFAICT, please remove them.

Thanks,
Conor.

> +        compatible = "st,stm32mp13-dcmipp";
> +        reg = <0x5a000000 0x400>;
> +        interrupts = <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
> +        resets = <&rcc DCMIPP_R>;
> +        clocks = <&rcc DCMIPP_K>;
> +        clock-names = "kclk";
> +
> +        port {
> +             dcmipp_0: endpoint {
> +                   remote-endpoint = <&mipid02_2>;
> +                   bus-width = <8>;
> +                   hsync-active = <0>;
> +                   vsync-active = <0>;
> +                   pclk-sample = <0>;
> +             };
> +        };
> +    };
> +
> +...
> -- 
> 2.25.1
> 

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