netdev - Re: Aw: Re: Re: [RFC v1] dt-bindings: net: dsa: convert binding for mediatek switches

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Date:   Wed, 4 May 2022 09:46:54 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     frank-w@...lic-files.de
Cc:     Greg Ungerer <gerg@...nel.org>,
        René van Dorst <opensource@...rst.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Frank Wunderlich <linux@...web.de>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: Aw: Re: Re: [RFC v1] dt-bindings: net: dsa: convert binding for
 mediatek switches

On 04/05/2022 09:44, Frank Wunderlich wrote:
> m 4. Mai 2022 08:51:41 MESZ schrieb Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>:
>> On 03/05/2022 17:03, Frank Wunderlich wrote:
>>>
>>> have not posted this version as it was failing in dtbs_check, this
>> was how i tried:
>>>
>>>
>> https://github.com/frank-w/BPI-R2-4.14/blob/8f2033eb6fcae273580263c3f0b31f0d48821740/Documentation/devicetree/bindings/net/dsa/mediatek.yaml#L177
>>
>> You have mixed up indentation of the second if (and missing -).
> 
> The "compatible if" should be a child of the "if" above,because phy-mode property only exists for cpu-port. I can try with additional "-" (but i guess this is only needed for allOf)
> 
> Rob told me that i cannot check compatible in subnode and this check will be always true...just like my experience.
> I can only make the compatible check at top-level and then need to define substructure based on this (so define structure twice). He suggested me adding this to description for now.
> 
> Imho this can be added later if really needed...did not found any example checking for compatible in a subnode. All were in top level. Afair these properties are handled by dsa-core/phylink and driver only compares constants set there.


Sure.

> 
>> But I think your check was not correct. I looked at bpi-r2 DTS
>> (mt7623n)
>> and pio controller uses GPIO flags.
> 
> I see only same as in the example
> 
> https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts#L196

I meant other consumers of pio GPIOs:
https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts#L97

https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts#L320

Best regards,
Krzysztof