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SubjectRe: [PATCH v2] dt-bingdings: perf: Support uncore ARM NI-700 PMU
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在 2024/1/31 17:30, Krzysztof Kozlowski 写道:
> On 31/01/2024 10:26, Yang Jialong 杨佳龙 wrote:
>>
>>
>> 在 2024/1/31 15:49, Krzysztof Kozlowski 写道:
>>> On 31/01/2024 07:59, JiaLong.Yang wrote:
>>>> Add file corresponding to hx_arm_ni.c introducing ARM NI-700 PMU driver
>>>> for HX.
>>>>
>>>> Signed-off-by: JiaLong.Yang <jialong.yang@shingroup.cn>
>>>> ---
>>>> v1 --> v2:
>>>> 1. Submit dt-bindings file Seperately.
>>>
>>> Where is the driver?
>>>
>>> Please read:
>>> https://elixir.bootlin.com/linux/v6.8-rc2/source/Documentation/process/submitting-patches.rst
>>> before posting.
>>>
>
> Keep all discussions public.

Get.

>
>
>>>> + pccs-id:
>>>> + $ref: /schemas/types.yaml#/definitions/uint32
>>>> + description: Used to identify NIs in system which has more than
>>>> + one NI.
>>>
>>> No, reg does it. Drop the property. Anyway you miss here vendor prefix
>>> and proper explanation.
>>>
>>
>> reg will tell phy address. Phy address is too long. I just want a id.
>> example: perf stat -a -e ni_pmu_${pccs-id}/cycles/
>> I will use it in user space. Not only in driver.
>
> Custom vendor property is not for that purpose. Use for example IDR, DT
> aliases or something else.
>
>

I have considered TD aliases. It's not very easy. Two places...
IDR.. I have tested. But it chouldn't correspond to the HWs.
I need it to identify NIs.
DT aliases is reachable. But no very easy.

>>>
>
> Best regards,
> Krzysztof
>
>


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