linux-kernel - Re: [PATCH 1/7] dt-bindings: media: Document STM32MP25 VDEC video decoder

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Message-ID: <b4367291-9e9e-dae3-3b56-c487e714683c@foss.st.com>
Date:   Mon, 9 Oct 2023 15:10:10 +0200
From:   Hugues FRUCHET <hugues.fruchet@...s.st.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        <linux-media@...r.kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>
CC:     Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Subject: Re: [PATCH 1/7] dt-bindings: media: Document STM32MP25 VDEC video
 decoder

Hi Krzysztof,

On 10/5/23 21:45, Krzysztof Kozlowski wrote:
> On 04/10/2023 11:15, Hugues Fruchet wrote:
>> Add STM32MP25 VDEC video decoder bindings.
>>
>> Signed-off-by: Hugues Fruchet <hugues.fruchet@...s.st.com>
>> ---
>>   .../bindings/media/st,stm32mp25-vdec.yaml     | 56 +++++++++++++++++++
>>   1 file changed, 56 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/media/st,stm32mp25-vdec.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/media/st,stm32mp25-vdec.yaml b/Documentation/devicetree/bindings/media/st,stm32mp25-vdec.yaml
>> new file mode 100644
>> index 000000000000..cf41f704113f
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/st,stm32mp25-vdec.yaml
>> @@ -0,0 +1,56 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/media/st,stm32mp25-vdec.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: STMicroelectronics STM32MP25 VDEC video decoder
>> +
>> +maintainers:
>> +  - Hugues Fruchet <hugues.fruchet@...s.st.com>
>> +
>> +description:
>> +  The STMicroelectronics STM32MP25 SOCs embeds a VDEC video hardware decoder
>> +  peripheral based on Verisilicon VC8000NanoD IP (former Hantro G1).
>> +
>> +properties:
>> +  compatible:
>> +    const: st,stm32mp25-vdec
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  interrupt-names:
>> +    maxItems: 1
> 
> This must be specific or just drop (little use of names for one entry)
I'll drop in v2.

> 
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    maxItems: 1
> 
> Same problem.
I'll drop in v2.

> 
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - interrupt-names
>> +  - clocks
>> +  - clock-names
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    vdec: vdec@...d0000 {
> 
> Drop label. Node name: video-codec
> (assuming this is video coder/decoder)
> 
> Node names should be generic. See also an explanation and list of
> examples (not exhaustive) in DT specification:
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
I'll do in v2, thanks for pointing-out the "video-codec" generic name.

> 
> 
> Best regards,
> Krzysztof
> 

BR,
Hugues.