linux-kernel - Re: [PATCH v8 net-next 01/10] dt-bindings: net: dsa: dt bindings for microchip lan937x

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Message-ID: <0bf8c693-3e0e-535f-f6f1-2059c11779ad@gmail.com>
Date:   Tue, 22 Feb 2022 11:47:27 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Prasanna Vengateshan <prasanna.vengateshan@...rochip.com>,
        andrew@...n.ch, netdev@...r.kernel.org, olteanv@...il.com,
        robh+dt@...nel.org
Cc:     UNGLinuxDriver@...rochip.com, woojung.huh@...rochip.com,
        hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        kuba@...nel.org, linux-kernel@...r.kernel.org,
        vivien.didelot@...il.com, devicetree@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v8 net-next 01/10] dt-bindings: net: dsa: dt bindings for
 microchip lan937x



On 2/18/2022 8:38 AM, Prasanna Vengateshan wrote:
> On Fri, 2022-02-11 at 19:56 -0800, Florian Fainelli wrote:
>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the
>> content is safe
>>
>> On 2/9/2022 3:58 AM, Prasanna Vengateshan wrote:
>>> On Mon, 2022-02-07 at 18:53 -0800, Florian Fainelli wrote:
>>>>
>>>>> +                rx-internal-delay-ps:
>>>>> +                  $ref: "#/$defs/internal-delay-ps"
>>>>> +                tx-internal-delay-ps:
>>>>> +                  $ref: "#/$defs/internal-delay-ps"
>>>>
>>>> Likewise, this should actually be changed in ethernet-controller.yaml
>>>
>>> There is *-internal-delay-ps property defined for mac in ethernet-
>>> controller.yaml. Should that be changed like above?
>>
>> It seems to me that these properties override whatever 'phy-mode'
>> property is defined, but in premise you are right that this is largely
>> applicable to RGMII only. I seem to recall that the QCA8K driver had
>> some sort of similar delay being applied even in SGMII mode but I am not
>> sure if we got to the bottom of this.
>>
>> Please make sure that this does not create regressions for other DTS in
>> the tree before going with that change in ethernet-controller.yaml.
> 
> Okay, Can these be submitted as a seperate patch?

Well yes, it has to be a separate patch, but it should be part of the 
same series as this one, otherwise your patch adding the binding for 
lan937x would fail validation.
-- 
Florian