linux-kernel - Re: [PATCH v1 1/2] dt-bindings: ethernet: eswin: add clock sampling control

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Message-ID: <43923bf9-6202-4147-8eac-5bd7bb653fd4@gmail.com>
Date: Fri, 23 Jan 2026 02:47:18 -0800
From: Bo Gan <ganboing@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Andrew Lunn <andrew@...n.ch>,
 李志 <lizhi2@...incomputing.com>
Cc: devicetree@...r.kernel.org, andrew+netdev@...n.ch, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, netdev@...r.kernel.org, pabeni@...hat.com,
 mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com,
 rmk+kernel@...linux.org.uk, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 ningyu@...incomputing.com, linmin@...incomputing.com,
 pinkesh.vaghela@...fochips.com, weishangjuan@...incomputing.com
Subject: Re: [PATCH v1 1/2] dt-bindings: ethernet: eswin: add clock sampling
 control

Hi Krzysztof,

On 1/23/26 02:07, Krzysztof Kozlowski wrote:
> On 23/01/2026 08:39, Bo Gan wrote:
>>> I assume the address of the interface is fixed. So you can just key
>>> off that to distinguish the two instances.
>>>
>>> Since this is an internal property, not a board property, it is not
>>> clear it actually belongs on DT.
>>>
>>>       Andrew
>>
>> IMO, they should be in DT to provide maximum flexibility. The SoC .dtsi
> 
> This is not the purpose of DT. Please rather use arguments in terms of
> DT rules (see docs, presentations).
> 
Any examples? links? Thank you for your patience.

I'd say if the board .dts never overrides the eswin,rx-clk-invert, (E.g.,
the SoC .dtsi has rx-clk-invert, later the board /delete-property/'s it)
then yes, it can be treated as something inherent to the mac, and then
"use arguments in terms of DT rules". I was thinking about use cases like:
https://lore.kernel.org/all/20230714104521.18751-3-samin.guo@starfivetech.com/

> We really do not care about maximum flexibility.
> 
> Best regards,
> Krzysztof

Bo