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

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Date:   Wed, 4 May 2022 08:51:41 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Frank Wunderlich <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 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 -).

(...)

>>>
>>> basicly this "ports"-property should be required too, right?
>>
>> Previous binding did not enforce it, I think, but it is reasonable to
>> require ports.
> 
> basicly it is required in dsa.yaml, so it will be redundant here
> 
> https://elixir.bootlin.com/linux/v5.18-rc5/source/Documentation/devicetree/bindings/net/dsa/dsa.yaml#L55
> 
> this defines it as pattern "^(ethernet-)?ports$" and should be processed by dsa-core. so maybe changing it to same pattern instead of moving up as normal property?

Just keep what is already used in existing DTS.

>>> for 33 there seem no constant..all other references to pio node are with numbers too and there seem no binding
>>> header defining the gpio pins (only functions in include/dt-bindings/pinctrl/mt7623-pinfunc.h)
>>
>> ok, then my comment
> 
> you mean adding a comment to the example that GPIO-flags/constants should be used instead of magic numbers?

I think something was cut from my reply. I wanted to say:
"ok, then my comment can be skipped"

But I think your check was not correct. I looked at bpi-r2 DTS (mt7623n)
and pio controller uses GPIO flags.

Best regards,
Krzysztof