linux-kernel - Re: [PATCH v3 1/4] dt-bindings: media: Add bindings for Imagination E5010 JPEG Encoder driver

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Message-ID: <879f8bf7-db08-0add-9bff-a56ae07ffc67@linaro.org>
Date:   Sun, 20 Aug 2023 22:25:37 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Devarsh Thakkar <devarsht@...com>, mchehab@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, hverkuil-cisco@...all.nl,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     laurent.pinchart@...asonboard.com, eugen.hristev@...labora.com,
        ezequiel@...guardiasur.com.ar, u.kleine-koenig@...gutronix.de,
        sakari.ailus@...ux.intel.com, praneeth@...com, nm@...com,
        vigneshr@...com, a-bhatia1@...com, j-luthra@...com,
        b-brnich@...com, detheridge@...com, p-mantena@...com, vijayp@...com
Subject: Re: [PATCH v3 1/4] dt-bindings: media: Add bindings for Imagination
 E5010 JPEG Encoder driver

On 20/08/2023 18:46, Devarsh Thakkar wrote:
>>> +properties:
>>> +  compatible:
>>> +    oneOf:
>>> +      - items:
>>> +          - const: ti,e5010-jpeg-enc
>>
>> TI did not make e5010. Use SoC-based compatible.
>>
>>> +          - const: img,e5010-jpeg-enc
>>> +      - const: img,e5010-jpeg-enc
>>
>> img,e5010-jpeg-enc cannot be compatible with img,e5010-jpeg-enc. It does
>> not make sense. I guess I did not expect you are going to use what you
>> wrote in v1 directly... I thought it is just about syntax.
>>
> 
> Sorry but I did not understand this fully, the possible compatibles are:
> 
> 1) "ti,am62a-jpeg-enc", "img,e5010-jpeg-enc"
> or
> 2)  "img,e5010-jpeg-enc"
> 
> anything else will not comply during dtbs_check as shown below :

Ah, you are right, ENOTENOUGHCOFFEE or some other issue on my side.

> 
> For e.g. If I use below compatible :
> "img,e5010-jpeg-enc", "img,e5010-jpeg-enc"
> 
> and run dtbs_check, it throw below error  :
> 
> make CHECK_DTBS=y DT_SCHEMA_FILES=media/img,e5010-jpeg-enc.yaml 
> ti/k3-am62a7-sk.dtb
>    LINT    Documentation/devicetree/bindings
>    CHKDT   Documentation/devicetree/bindings/processed-schema.json
>    SCHEMA  Documentation/devicetree/bindings/processed-schema.json
>    DTC_CHK arch/arm64/boot/dts/ti/k3-am62a7-sk.dtb
> /home/devarsht/ti/linux-next2/linux-next/arch/arm64/boot/dts/ti/k3-am62a7-sk.dtb: 
> jpeg-encoder@...0000: compatible: 'oneOf' conditional failed, one must 
> be fixed:
>          ['img,e5010-jpeg-enc', 'img,e5010-jpeg-enc'] is too long
>          'ti,am62a-jpeg-enc' was expected
>          From schema: 
> /home/devarsht/ti/linux-next2/linux-next/Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yaml
> 
> 
> Similarly, if I use below compatible :
> 
> "ti,am62a-jpeg-enc",
> It throw below error :
> 
> make CHECK_DTBS=y DT_SCHEMA_FILES=media/img,e5010-jpeg-enc.yaml 
> ti/k3-am62a7-sk.dtb
>    DTC_CHK arch/arm64/boot/dts/ti/k3-am62a7-sk.dtb
> /home/devarsht/ti/linux-next2/linux-next/arch/arm64/boot/dts/ti/k3-am62a7-sk.dtb: 
> jpeg-encoder@...0000: compatible: 'oneOf' conditional failed, one must 
> be fixed:
>          ['ti,am62a-jpeg-enc'] is too short
>          'img,e5010-jpeg-enc' was expected
>          From schema: 
> /home/devarsht/ti/linux-next2/linux-next/Documentation/devicetree/bindings/media/img,e5010-jpeg-enc.yaml
> 
> 
> But If I use either 1) or 2) it does not throw any error.
> Please let me know if I missed to understand your point.

Yes, you are right, sorry for that.

However it still should be "ti,am62a-jpeg-enc", not ti,e5010...


Best regards,
Krzysztof