linux-kernel - Re: [PATCH v2 4/5] dt-bindings: net: Add documentation for optional regulators

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Message-ID: <0518eef1-75a6-fbfe-96d8-bb1fc4e5178a@linaro.org>
Date:   Fri, 20 May 2022 09:57:26 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Mark Brown <broonie@...nel.org>, Andrew Lunn <andrew@...n.ch>
Cc:     Corentin Labbe <clabbe@...libre.com>, calvin.johnson@....nxp.com,
        davem@...emloft.net, edumazet@...gle.com, hkallweit1@...il.com,
        jernej.skrabec@...il.com, krzysztof.kozlowski+dt@...aro.org,
        kuba@...nel.org, lgirdwood@...il.com, linux@...linux.org.uk,
        pabeni@...hat.com, robh+dt@...nel.org, samuel@...lland.org,
        wens@...e.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, netdev@...r.kernel.org
Subject: Re: [PATCH v2 4/5] dt-bindings: net: Add documentation for optional
 regulators

On 19/05/2022 17:49, Mark Brown wrote:
> On Thu, May 19, 2022 at 01:58:18PM +0200, Andrew Lunn wrote:
>> On Thu, May 19, 2022 at 01:33:21PM +0200, Krzysztof Kozlowski wrote:
>>> On 19/05/2022 13:31, Mark Brown wrote:
>>>> On Thu, May 19, 2022 at 11:55:28AM +0200, Krzysztof Kozlowski wrote:
>>>>> On 18/05/2022 22:09, Corentin Labbe wrote:
> 
>>>>>> +  regulators:
>>>>>> +    description:
>>>>>> +       List of phandle to regulators needed for the PHY
> 
>>>>> I don't understand that... is your PHY defining the regulators or using
>>>>> supplies? If it needs a regulator (as a supply), you need to document
>>>>> supplies, using existing bindings.
> 
>>>> They're trying to have a generic driver which works with any random PHY
>>>> so the binding has no idea what supplies it might need.
> 
>>> OK, that makes sense, but then question is why not using existing
>>> naming, so "supplies" and "supply-names"?
> 
>> I'm not saying it is not possible, but in general, the names are not
>> interesting. All that is needed is that they are all on, or
>> potentially all off to save power on shutdown. We don't care how many
>> there are, or what order they are enabled.
> 
> I think Krzysztof is referring to the name of the property rather than
> the contents of the -names property there.

Yes, exactly. Existing pattern for single regulator supply is
"xxx-supply", so why this uses a bit different pattern instead of
something more consistent ("supplies" and "supply-names")?

Best regards,
Krzysztof