linux-kernel - Re: [net-next RFC PATCH 03/14] dt-bindings: net: document ethernet PHY package nodes

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Message-ID: <655fa9a4.5d0a0220.b01e8.7f5b@mx.google.com>
Date:   Thu, 23 Nov 2023 20:36:01 +0100
From:   Christian Marangi <ansuelsmth@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Rob Herring <robh@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <florian.fainelli@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Daniel Golle <daniel@...rotopia.org>,
        Qingfang Deng <dqfext@...il.com>,
        SkyLake Huang <SkyLake.Huang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        David Epping <david.epping@...singlinkelectronics.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        Harini Katakam <harini.katakam@....com>,
        Simon Horman <horms@...nel.org>,
        Robert Marko <robert.marko@...tura.hr>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [net-next RFC PATCH 03/14] dt-bindings: net: document ethernet
 PHY package nodes

On Thu, Nov 23, 2023 at 04:07:14PM +0100, Andrew Lunn wrote:
> > compatible = "ethernet-phy-package", "qca807x-phy-package";
> > 
> > With "ethernet-phy-package" a must and "qca807x-phy-package" used only
> > if additional property are used.
> > 
> > My current idea was to use select and base everything on the possible
> > PHY compatible (and it does work, tested by adding bloat in the DT
> > example and seeing if the schema was rejected). Had this idea since the
> > compatible would never be used.
> 
> The DT people are unhappy with PHYs don't use compatibles, so
> validation does not work. It probably too late to add compatibles to
> very PHY driver. But this is new development work, we don't have any
> history. So we can add a compatible per package to make the validation
> tools work.
> 
> So for parsing the tree in the kernel we look for
> 'ethernet-phy-package'. For validating the tree using the yaml tools
> we use the 'qca807x-phy-package'.
>

Ok clear, what about the generic ethernet-phy-package.yaml?

Idea was to describe common properties there and then specific PHY
package would add every common property with $ref and add their special
ones on top of that. Would that be ok? (similar to the current
implementation with ethernet-phy-package and qcom,qca807x with the only
difference that qcom,qca807x.yaml would also have the compatible set
(currently missing from this RFC)

-- 
	Ansuel