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Date:   Tue, 27 Sep 2022 10:33:31 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sean Anderson <sean.anderson@...o.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Madalin Bucur <madalin.bucur@....com>,
        Camelia Alexandra Groza <camelia.groza@....com>,
        netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Russell King <linux@...linux.org.uk>,
        "linuxppc-dev @ lists . ozlabs . org" <linuxppc-dev@...ts.ozlabs.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v5 1/9] dt-bindings: net: Expand pcs-handle to
 an array

On Mon, Sep 26, 2022 at 03:03:13PM -0400, Sean Anderson wrote:
> This allows multiple phandles to be specified for pcs-handle, such as
> when multiple PCSs are present for a single MAC. To differentiate
> between them, also add a pcs-handle-names property.
> 
> Signed-off-by: Sean Anderson <sean.anderson@...o.com>
> ---
> This was previously submitted as [1]. I expect to update this series
> more, so I have moved it here. Changes from that version include:
> - Add maxItems to existing bindings
> - Add a dependency from pcs-names to pcs-handle.
> 
> [1] https://lore.kernel.org/netdev/20220711160519.741990-3-sean.anderson@seco.com/
> 
> (no changes since v4)
> 
> Changes in v4:
> - Use pcs-handle-names instead of pcs-names, as discussed
> 
> Changes in v3:
> - New
> 
>  .../bindings/net/dsa/renesas,rzn1-a5psw.yaml           |  1 +
>  .../devicetree/bindings/net/ethernet-controller.yaml   | 10 +++++++++-
>  .../devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml    |  2 +-
>  3 files changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml b/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
> index 7ca9c19a157c..a53552ee1d0e 100644
> --- a/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
> @@ -74,6 +74,7 @@ properties:
>  
>          properties:
>            pcs-handle:
> +            maxItems: 1

Forgot to remove the $ref here.

>              description:
>                phandle pointing to a PCS sub-node compatible with
>                renesas,rzn1-miic.yaml#
> diff --git a/Documentation/devicetree/bindings/net/ethernet-controller.yaml b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> index 4b3c590fcebf..5bb2ec2963cf 100644
> --- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> +++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
> @@ -108,11 +108,16 @@ properties:
>      $ref: "#/properties/phy-connection-type"
>  
>    pcs-handle:
> -    $ref: /schemas/types.yaml#/definitions/phandle
> +    $ref: /schemas/types.yaml#/definitions/phandle-array

'phandle-array' is really a matrix, so this needs a bit more:

items:
  maxItems: 1

Which basically says this is phandles with no arg cells.

>      description:
>        Specifies a reference to a node representing a PCS PHY device on a MDIO
>        bus to link with an external PHY (phy-handle) if exists.
>  
> +  pcs-handle-names:
> +    $ref: /schemas/types.yaml#/definitions/string-array

No need for a type as *-names already has a type.

> +    description:
> +      The name of each PCS in pcs-handle.
> +
>    phy-handle:
>      $ref: /schemas/types.yaml#/definitions/phandle
>      description:
> @@ -216,6 +221,9 @@ properties:
>          required:
>            - speed
>  
> +dependencies:
> +  pcs-handle-names: [pcs-handle]
> +
>  allOf:
>    - if:
>        properties:
> diff --git a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
> index 7f620a71a972..600240281e8c 100644
> --- a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
> +++ b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml
> @@ -31,7 +31,7 @@ properties:
>    phy-mode: true
>  
>    pcs-handle:
> -    $ref: /schemas/types.yaml#/definitions/phandle
> +    maxItems: 1
>      description:
>        A reference to a node representing a PCS PHY device found on
>        the internal MDIO bus.
> -- 
> 2.35.1.1320.gc452695387.dirty
> 
> 

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