Re: [PATCH v1 1/3] arm64: dts: qcom: msm8996: Fix 'in-ports' is a required property

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 30/11/2023 14:12, Jinlong Mao wrote:
> 
> 
> On 11/30/2023 8:06 PM, Krzysztof Kozlowski wrote:
>> On 30/11/2023 12:15, Jinlong Mao wrote:
>>>
>>>
>>> On 11/30/2023 4:55 PM, Krzysztof Kozlowski wrote:
>>>> On 29/11/2023 15:38, Mao Jinlong wrote:
>>>>> The inport of funnel@3023000 connects to a source which is not supported
>>>>> in current linux kernel. Remove the device tree node of funnel@3023000
>>>>> to fix the warning. It will be added once the driver support to the
>>>>> source is added to linux kernel.
>>>>
>>>> Thanks for the changes, but that's not correct reason to remove DTS
>>>> code. What kernel supports or not, should be irrelevant for the DTS. DTS
>>>> for example is used in other projects - did you check if they have the
>>>> same issues? Anyway, DTS describes the hardware, so how current kernel
>>>> support defines what is and what is not in the hardware?
>>>>
>>>>
>>>> Best regards,
>>>> Krzysztof
>>>
>>> Hi Krzysztof,
>>>
>>> The funnel dt node must have in-ports node. It is to describe the input
>>> connection of funnel HW. But there is no dt_binding doc to describe the
>>> DT node of the HW connected to funnel@3023000. So remove the funnel to
>>> solve the warning as of now. The funnel will be added back once driver
>>> and dt_binding are added for the HW.
>>>
>>> Documentation/devicetree/bindings/arm/arm,coresight-dynamic-funnel.yaml
>>
>> Why we cannot add now the binding for the connected hardware? It's not
>> really related to the driver.
>>
>> Best regards,
>> Krzysztof
> 
> Do you mean yaml file can be added before the driver code is merged ?

Yes, the binding. YAML is only the language. We don't write YAMLs, we
write bindings.

Best regards,
Krzysztof