linux-kernel - Re: [PATCH v3 net-next 06/10] dt-bindings: net: dsa: mediatek,mt7530: fix port description location

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Message-ID: <Y4WnjiE2IxDgi5mc@euler>
Date:   Mon, 28 Nov 2022 22:32:46 -0800
From:   Colin Foster <colin.foster@...advantage.com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     linux-renesas-soc@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        John Crispin <john@...ozen.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Marek Vasut <marex@...x.de>,
        Sean Wang <sean.wang@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Clément Léger <clement.leger@...tlin.com>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Linus Walleij <linus.walleij@...aro.org>,
        UNGLinuxDriver@...rochip.com,
        Woojung Huh <woojung.huh@...rochip.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        George McCollister <george.mccollister@...il.com>,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v3 net-next 06/10] dt-bindings: net: dsa:
 mediatek,mt7530: fix port description location

Hi Arınç,

On Mon, Nov 28, 2022 at 11:28:31AM +0300, Arınç ÜNAL wrote:
> On 28.11.2022 01:47, Colin Foster wrote:
> > The description property was located where it applies to every port, not
> > just ports 5 or 6 (CPU ports). Fix this description.
> 
> I'm not sure I understand. The description for reg does apply to every port.
> Both CPU ports and user ports are described. This patch moves the
> description to under CPU ports only.

You're right. I misinterpreted what Rob suggested, so the commit message
isn't correct. I see now that reg applies to every port, but is only
restricted for CPU ports (if: required: [ ethernet ]).  I'll clean this
message up.

> 
> > 
> > Suggested-by: Rob Herring <robh@...nel.org>
> > Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> > ---
> > 
> > v2 -> v3
> >    * New patch.
> > 
> > ---
> >   .../bindings/net/dsa/mediatek,mt7530.yaml          | 14 +++-----------
> >   1 file changed, 3 insertions(+), 11 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > index 7df4ea1901ce..415e6c40787e 100644
> > --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> > @@ -156,17 +156,6 @@ patternProperties:
> >       patternProperties:
> >         "^(ethernet-)?port@[0-9]+$":
> > -        type: object
> > -        description: Ethernet switch ports
> > -
> > -        unevaluatedProperties: false
> > -
> 
> Would be nice to mention these being removed on the patch log. Or remove
> them while doing ("dt-bindings: net: dsa: utilize base definitions for
> standard dsa switches").

Agreed. My gut is telling me this wants to be in a separate patch from
the generic DSA base definitions patch... but I can't say why for
certain. I'll plan to move these to the patch you suggest and add a comment
in there about how the type, description, and unevaluatedProperties of
mediatek,mt7530 is no longer needed as a result? Keep this patch as more
of a "restrict custom port description to CPU ports only" patch?

I also see that ("dt-bindings: net: dsa: mediatek,mt7530: remove unnecessary
dsa-port reference") should probably be earlier in this patch set. I'll
plan to move that earlier in the series, before  ("dt-bindings: net: dsa:
utilize base definitions for standard dsa switches").

> 
> > -        properties:
> > -          reg:
> > -            description:
> > -              Port address described must be 5 or 6 for CPU port and from 0 to 5
> > -              for user ports.
> > -
> >           allOf:
> >             - $ref: dsa-port.yaml#
> >             - if:
> > @@ -174,6 +163,9 @@ patternProperties:
> >               then:
> >                 properties:
> >                   reg:
> > +                  description:
> > +                    Port address described must be 5 or 6 for CPU port and from
> > +                    0 to 5 for user ports
> >                     enum:
> >                       - 5
> >                       - 6
> 
> Thank you for your efforts.

I greatly appreciate your help and feedback!

> 
> Arınç