linux-kernel - Re: [PATCH v1 1/2] dt-bindings: arm: coresight: Update the pattern of ete node name

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Message-ID: <d4c6c32f-b1cf-4cf2-9c52-85fa8c1ed73f@linaro.org>
Date: Thu, 21 Dec 2023 09:44:17 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jinlong Mao <quic_jinlmao@...cinc.com>,
 Mathieu Poirier <mathieu.poirier@...aro.org>,
 Suzuki K Poulose <suzuki.poulose@....com>, Mike Leach
 <mike.leach@...aro.org>, James Clark <james.clark@....com>,
 Leo Yan <leo.yan@...aro.org>, Andy Gross <agross@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Tingwei Zhang <quic_tingweiz@...cinc.com>,
 Yuanfang Zhang <quic_yuanfang@...cinc.com>,
 Tao Zhang <quic_taozha@...cinc.com>, coresight@...ts.linaro.org
Subject: Re: [PATCH v1 1/2] dt-bindings: arm: coresight: Update the pattern of
 ete node name

On 21/12/2023 09:36, Jinlong Mao wrote:
> 
> 
> On 12/21/2023 4:17 PM, Krzysztof Kozlowski wrote:
>> On 21/12/2023 09:15, Jinlong Mao wrote:
>>>
>>>
>>> On 12/21/2023 4:12 PM, Krzysztof Kozlowski wrote:
>>>> On 21/12/2023 04:28, Jinlong Mao wrote:
>>>>>>> diff --git a/Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml b/Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
>>>>>>> index f725e6940993..cbf583d34029 100644
>>>>>>> --- a/Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
>>>>>>> +++ b/Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
>>>>>>> @@ -23,7 +23,7 @@ description: |
>>>>>>>     
>>>>>>>     properties:
>>>>>>>       $nodename:
>>>>>>> -    pattern: "^ete([0-9a-f]+)$"
>>>>>>> +    pattern: "^ete-([0-9a-f]+)$"
>>>>>>
>>>>>> My concerns are not resolved. Why is it here in the first place?
>>>>>
>>>>> Hi Krzysztof,
>>>>>
>>>>> ETE is acronym of embedded trace extension. The number of the name is
>>>>> the same as the number of the CPU it belongs to.
>>>>
>>>> This is obvious and was not my question.
>>>
>>> Do you mean why the pattern match of the node name is added here ?
>>
>> Yes, especially that it is requiring a non-generic name.
>>
>>>
>>> This node should not have the node name match, right ?
>>
>> Usually. For sure shouldn't be for non-generic names.
>>
> Hi Suzuki,
> 
> Can we remove the pattern match of the node name and use a generic name 
> "ete" for the ete DT nodes ?

"ete" is not a generic name. What is generic here? It's an acronym of
some specific device name.

Best regards,
Krzysztof