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Message-ID: <21eda361-ae7c-48d7-b1ea-ef1bfe8d9104@linaro.org>
Date: Thu, 25 Jan 2024 11:40:40 +0100
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Subject: Re: [PATCH 1/2] dt-bindings: hwinfo: Introduce board-id
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To: Amrit Anand <quic_amrianan@quicinc.com>, robh+dt@kernel.org,
 krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, agross@kernel.org,
 andersson@kernel.org, konrad.dybcio@linaro.org
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-arm-msm@vger.kernel.org, kernel@quicinc.com,
 Elliot Berman <quic_eberman@quicinc.com>
References: <1705749649-4708-1-git-send-email-quic_amrianan@quicinc.com>
 <1705749649-4708-2-git-send-email-quic_amrianan@quicinc.com>
 <1fc9815e-76dd-41d7-aa1a-caa72ef4ad34@linaro.org>
 <b4c27fb4-0cbf-7bad-3fc3-163fb4a5eb3f@quicinc.com>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <b4c27fb4-0cbf-7bad-3fc3-163fb4a5eb3f@quicinc.com>
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On 24/01/2024 13:42, Amrit Anand wrote:

>>> +select:
>>> +  anyOf:
>>> +    - required:
>>> +        - 'board-id'
>>> +    - required:
>>> +        - 'board-id-types'
>>> +    - required:
>>> +        - '#board-id-cells'
>> I don't fully get why do you need this select. Isn't the schema selected
>> by nodename? Or maybe it is for the final required: but then this could
>> be just set of dependencies.
> The nodename here would be "/". So it will be applied to all the DTs, right?
> Here, we wanted this to apply only if the above mentioned properties are 
> present.

The nodename will select it.

> Do you suggest moving this to qcom,board-id.yaml and the required: as well.
> So that vendor specific yaml could be applied?

I suggest dropping the select.

Different topic is that we cannot even test it because you did not
provide any user of this binding.

>>> +
>>> +properties:
>>> +  $nodename:
>>> +    const: "/"
>> Blank line.
> Will add it.
>>> +  board-id:
>>> +    $ref: /schemas/types.yaml#/definitions/uint32-matrix
>>> +    description: |
>> Do not need '|' unless you need to preserve formatting.
> Ack
>>> +      A list of identifiers that can be used to match with this devicetree.
>> s/devicetree/Devicetree/ ?
> Will update
>>> +      The interpretatation of each cell can be matched with the
>> Typo: interpretation
> Will update
>>> +      board-id-type at the same index.
>>> +
>>> +  board-id-types:
>>> +    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
>>> +    description:
>>> +      Defines the type of each cell, indicating to the DeviceTree selection
>> s/DeviceTree/Devicetree/ ?
> Will update
>>
>>> +      mechanism how to parse the board-id.
>>> +
>>> +  '#board-id-cells':
>>   What are the cells for?
> Bootloader will use this to check the number of entries in a tuple of 
> board-id.

Doesn't the board-id-type define number of cells? How could you have the
same board-id-type with different number of elements on board A and board B?


Best regards,
Krzysztof