linux-kernel - Re: [PATCH 4/6] dt-bindings: net: marvell,prestera: Describe PCI devices of the prestera family

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Message-ID: <20221123221343.GA2595383-robh@kernel.org>
Date:   Wed, 23 Nov 2022 16:13:43 -0600
From:   Rob Herring <robh@...nel.org>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Krzysztof Kozlowski <krzk+dt@...nel.org>,
        devicetree@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
        Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        Taras Chornyi <tchornyi@...vell.com>,
        linux-kernel@...r.kernel.org,
        Robert Marko <robert.marko@...tura.hr>,
        Luka Perkov <luka.perkov@...tura.hr>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Michael Walle <michael@...le.cc>
Subject: Re: [PATCH 4/6] dt-bindings: net: marvell,prestera: Describe PCI
 devices of the prestera family

On Thu, Nov 17, 2022 at 10:55:55PM +0100, Miquel Raynal wrote:
> Even though the devices have very little in common beside the name and
> the main "switch" feature, Marvell Prestera switch family is also
> composed of PCI-only devices which can receive additional static
> properties, like nvmem cells to point at MAC addresses, for
> instance. Let's describe them.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
> ---
>  .../bindings/net/marvell,prestera.yaml        | 55 ++++++++++++++++---
>  1 file changed, 48 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/marvell,prestera.yaml b/Documentation/devicetree/bindings/net/marvell,prestera.yaml
> index b0a3ecca406e..f159fadf86ec 100644
> --- a/Documentation/devicetree/bindings/net/marvell,prestera.yaml
> +++ b/Documentation/devicetree/bindings/net/marvell,prestera.yaml
> @@ -4,19 +4,24 @@
>  $id: http://devicetree.org/schemas/net/marvell,prestera.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: Marvell Prestera AlleyCat3 switch
> +title: Marvell Prestera switch family
>  
>  maintainers:
>    - Miquel Raynal <miquel.raynal@...tlin.com>
>  
>  properties:
>    compatible:
> -    items:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - marvell,prestera-98dx3236
> +              - marvell,prestera-98dx3336
> +              - marvell,prestera-98dx4251
> +          - const: marvell,prestera
>        - enum:
> -          - marvell,prestera-98dx3236
> -          - marvell,prestera-98dx3336
> -          - marvell,prestera-98dx4251
> -      - const: marvell,prestera
> +          - pci11ab,c804
> +          - pci11ab,c80c
> +          - pci11ab,cc1e
>  
>    reg:
>      maxItems: 1
> @@ -28,10 +33,33 @@ properties:
>      description: Reference to the DFX Server bus node.
>      $ref: /schemas/types.yaml#/definitions/phandle
>  
> +  nvmem-cells: true
> +
> +  nvmem-cell-names: true
> +
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        const: marvell,prestera
> +
> +# Memory mapped AlleyCat3 family
> +then:
> +  properties:
> +    nvmem-cells: false
> +    nvmem-cell-names: false
> +  required:
> +    - interrupts
> +
> +# PCI Aldrin family
> +else:
> +  properties:
> +    interrupts: false
> +    dfx: false
> +
>  required:
>    - compatible
>    - reg
> -  - interrupts
>  
>  additionalProperties: false
>  
> @@ -43,3 +71,16 @@ examples:
>          interrupts = <33>, <34>, <35>;
>          dfx = <&dfx>;
>      };
> +
> +  - |
> +    pcie {
> +        #address-cells = <3>;
> +        #size-cells = <2>;

           ranges;
           device_type = "pci";

With that,

Reviewed-by: Rob Herring <robh@...nel.org>

> +
> +        switch@0,0 {
> +            reg = <0x0 0x0 0x0 0x0 0x0>;
> +            compatible = "pci11ab,c80c";
> +            nvmem-cells = <&mac_address 0>;
> +            nvmem-cell-names = "mac-address";
> +        };
> +    };
> -- 
> 2.34.1
> 
>