linux-kernel - Re: [PATCH net-next V7] dt-bindings: net: xlnx,axi-ethernet: convert bindings document to yaml

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Date:   Thu, 18 May 2023 16:34:38 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Gaddam, Sarath Babu Naidu" <sarath.babu.naidu.gaddam@....com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>
Cc:     "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "radhey.shyam.pandey@...inx.com" <radhey.shyam.pandey@...inx.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Sarangi, Anirudha" <anirudha.sarangi@....com>,
        "Katakam, Harini" <harini.katakam@....com>,
        "git (AMD-Xilinx)" <git@....com>
Subject: Re: [PATCH net-next V7] dt-bindings: net: xlnx,axi-ethernet: convert
 bindings document to yaml

On 18/05/2023 08:17, Gaddam, Sarath Babu Naidu wrote:
> 
> 
>> -----Original Message-----
>> From: Gaddam, Sarath Babu Naidu
>> Sent: Wednesday, May 3, 2023 3:01 PM
>> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>;
>> davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
>> pabeni@...hat.com; robh+dt@...nel.org;
>> krzysztof.kozlowski+dt@...aro.org
>> Cc: michal.simek@...inx.com; radhey.shyam.pandey@...inx.com;
>> netdev@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
>> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; Sarangi,
>> Anirudha <anirudha.sarangi@....com>; Katakam, Harini
>> <harini.katakam@....com>; git (AMD-Xilinx) <git@....com>
>> Subject: RE: [PATCH net-next V7] dt-bindings: net: xlnx,axi-ethernet:
>> convert bindings document to yaml
>>
>>
>>
>>> -----Original Message-----
>>> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>>> Sent: Tuesday, May 2, 2023 3:56 PM
>>> To: Gaddam, Sarath Babu Naidu
>>> <sarath.babu.naidu.gaddam@....com>; davem@...emloft.net;
>>> edumazet@...gle.com; kuba@...nel.org; pabeni@...hat.com;
>>> robh+dt@...nel.org; krzysztof.kozlowski+dt@...aro.org
>>> Cc: michal.simek@...inx.com; radhey.shyam.pandey@...inx.com;
>>> netdev@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
>>> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; Sarangi,
>>> Anirudha <anirudha.sarangi@....com>; Katakam, Harini
>>> <harini.katakam@....com>; git (AMD-Xilinx) <git@....com>
>>> Subject: Re: [PATCH net-next V7] dt-bindings: net: xlnx,axi-ethernet:
>>> convert bindings document to yaml
>>>
>>> On 28/03/2023 14:52, Gaddam, Sarath Babu Naidu wrote:
>>>>
>>>>
>>>>> -----Original Message-----
>>>>> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>>>>> Sent: Tuesday, March 14, 2023 9:22 PM
>>>>> To: Gaddam, Sarath Babu Naidu
>>>>> <sarath.babu.naidu.gaddam@....com>; davem@...emloft.net;
>>>>> edumazet@...gle.com; kuba@...nel.org; pabeni@...hat.com;
>>>>> robh+dt@...nel.org; krzysztof.kozlowski+dt@...aro.org
>>>>> Cc: michal.simek@...inx.com; radhey.shyam.pandey@...inx.com;
>>>>> netdev@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
>>>>> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; Sarangi,
>>>>> Anirudha <anirudha.sarangi@....com>; Katakam, Harini
>>>>> <harini.katakam@....com>; git (AMD-Xilinx) <git@....com>
>>>>> Subject: Re: [PATCH net-next V7] dt-bindings: net: xlnx,axi-ethernet:
>>>>> convert bindings document to yaml
>>>>>
>>>>> On 08/03/2023 07:12, Sarath Babu Naidu Gaddam wrote:
>>>>>> From: Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
>>>>>>
>>>>>> Convert the bindings document for Xilinx AXI Ethernet Subsystem
>>> from
>>>>>> txt to yaml. No changes to existing binding description.
>>>>>>
>>>>>
>>>>> (...)
>>>>>
>>>>>> +properties:
>>>>>> +  compatible:
>>>>>> +    enum:
>>>>>> +      - xlnx,axi-ethernet-1.00.a
>>>>>> +      - xlnx,axi-ethernet-1.01.a
>>>>>> +      - xlnx,axi-ethernet-2.01.a
>>>>>> +
>>>>>> +  reg:
>>>>>> +    description:
>>>>>> +      Address and length of the IO space, as well as the address
>>>>>> +      and length of the AXI DMA controller IO space, unless
>>>>>> +      axistream-connected is specified, in which case the reg
>>>>>> +      attribute of the node referenced by it is used.
>>>>>
>>>>> Did you test it with axistream-connected? The schema and
>>>>> description feel contradictory and tests would point the issue.
>>>>
>>>> Thanks for review comments. We tested with axistream-connected
>> and
>>> did
>>>> not observe any errors. Do you anticipate any issues/errors ?
>>>
>>> Yes, I anticipate errors. What you wrote here looks incorrect based on
>>> the schema.
>>>
>>> Also, See also my further comments (or you ignored them?).
>>>
>>> You can come many months after my review to ask about details, to be
>>> sure I will forget the topic.
>>
>>
>> Hi Krzysztof, Apologies for miscommunication. I replied to this thread on
>> March 28 and said that I would address remaining review comments in
>> the next version.
>>
>> Lore link:
>> https://lore.kernel.org/all/MW5PR12MB559880B0E220BDBD64E06D24
>> 87889@...PR12MB5598.namprd12.prod.outlook.com/
>> https://lore.kernel.org/all/MW5PR12MB5598678BB9AB6EC2FFC424F48
>> 7889@...PR12MB5598.namprd12.prod.outlook.com/
>>
>> I planned to send next version with phy-mode and pcs-handle maxItems
>> fixed.but I wanted to close on the axistream-connected discussion before
>> doing so.
>>
>> Related to axistream-connected discussion:
>> I already ran dt binding check for schema and dts node validation. I
>> assume this should point any errors on it.

And how do we know that you tested correct DTS with it?

>>
> 
> Hi Krzysztof, Could you please comment on this ? Please let me if I missed
> any changes or comments.

I don't think anything improved in this patchset. The binding has
incomplete and I believe incorrect constraints for axistream-connected.
You did not provide DTS to prove me otherwise. If you are not going to
fix the issue nor provide DTS, what I can say more? Looks wrong.

Best regards,
Krzysztof