netdev - Re: [PATCH v4] dt-bindings: net: dsa: ksz9477: add sample of switch bindings managed in i2c mode

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Date:   Sat, 29 Dec 2018 08:26:56 +0100
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Woojung.Huh@...rochip.com, UNGLinuxDriver@...rochip.com,
        Andrew Lunn <andrew@...n.ch>,
        vivien.didelot@...oirfairelinux.com,
        Florian Fainelli <f.fainelli@...il.com>,
        driverdev-devel@...uxdriverproject.org,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v4] dt-bindings: net: dsa: ksz9477: add sample of switch
 bindings managed in i2c mode

On Sat, Dec 29, 2018 at 1:03 AM Rob Herring <robh@...nel.org> wrote:
>
> On Wed, Dec 19, 2018 at 08:46:26PM +0100, Sergio Paracuellos wrote:
> > Add device-tree binding example of the ksz9477 switch managed in i2c mode.
> >
> > Cc: devicetree@...r.kernel.org
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> > ---
> > Changes v4:
> >     - Use one tab formatting properly the binding sample.
> >
> > Changes v3:
> >     - No changes. Just resent patches together.
> >
> > Changes v2:
> >     - Use generic name for label of the switch and make sure reg and @X
> >       have the same value.
> >  .../devicetree/bindings/net/dsa/ksz.txt       | 51 +++++++++++++++++++
> >  1 file changed, 51 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/net/dsa/ksz.txt b/Documentation/devicetree/bindings/net/dsa/ksz.txt
> > index 0f407fb371ce..2f276aa42f0b 100644
> > --- a/Documentation/devicetree/bindings/net/dsa/ksz.txt
> > +++ b/Documentation/devicetree/bindings/net/dsa/ksz.txt
> > @@ -74,3 +74,54 @@ Ethernet switch connected via SPI to the host, CPU port wired to eth0:
> >                                                               };
> >                                               };
> >                               };
> > +
> > +Ethernet switch connected via I2C to the host, CPU port wired to eth0:
> > +
> > +     eth0: ethernet@...01000 {
> > +             fixed-link {
> > +                     speed = <1000>;
> > +                     full-duplex;
> > +             };
> > +     };
> > +
> > +     i2c0: i2c@...08000 {
> > +             switch: ksz9897@5f {
> > +                     compatible = "microchip,ksz9897";
> > +                     reg = <5f>;
> > +
>
> I should have said this earlier, but this example doesn't really show
> anything other than differences in reg and bus-specific properties which
> are pretty well understood. So I don't really think it is worth adding
> the example.

Fair enough. No problem at all for me. Thanks for let me know.

>
> > +                     ports {
> > +                             #address-cells = <1>;
> > +                             #size-cells = <0>;
> > +
> > +                             port@0 {
> > +                                     reg = <0>;
> > +                                     label = "lan1";
> > +                             };
> > +                             port@1 {
> > +                                     reg = <1>;
> > +                                     label = "lan2";
> > +                             };
> > +                             port@2 {
> > +                                     reg = <2>;
> > +                                     label = "lan3";
> > +                             };
> > +                             port@3 {
> > +                                     reg = <3>;
> > +                                     label = "lan4";
> > +                             };
> > +                             port@4 {
> > +                                     reg = <4>;
> > +                                     label = "lan5";
> > +                             };
> > +                             port@6 {
> > +                                     reg = <6>;
> > +                                     label = "cpu";
> > +                                     ethernet = <&eth0>;
> > +                                     fixed-link {
> > +                                             speed = <1000>;
> > +                                             full-duplex;
> > +                                     };
> > +                             };
> > +                     };
> > +             };
> > +     };
> > --
> > 2.19.1
> >

Best regards,
    Sergio Paracuellos