linux-kernel - Re: [PATCH v4 3/5] dt-bindings: nvmem: add YAML schema for the sl28 vpd layout

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Date:   Wed, 16 Nov 2022 14:52:03 -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, Robert Marko <robert.marko@...tura.hr>,
        Luka Perkov <luka.perkov@...tura.hr>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Michael Walle <michael@...le.cc>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/5] dt-bindings: nvmem: add YAML schema for the sl28
 vpd layout

On Mon, Nov 14, 2022 at 09:56:57AM +0100, Miquel Raynal wrote:
> From: Michael Walle <michael@...le.cc>
> 
> Add a schema for the NVMEM layout on Kontron's sl28 boards.
> 
> Signed-off-by: Michael Walle <michael@...le.cc>
> Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
> ---
>  .../nvmem/layouts/kontron,sl28-vpd.yaml       | 62 +++++++++++++++++++
>  .../bindings/nvmem/layouts/nvmem-layout.yaml  |  3 +
>  2 files changed, 65 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/kontron,sl28-vpd.yaml
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/layouts/kontron,sl28-vpd.yaml b/Documentation/devicetree/bindings/nvmem/layouts/kontron,sl28-vpd.yaml
> new file mode 100644
> index 000000000000..fef795e79c36
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/layouts/kontron,sl28-vpd.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/layouts/kontron,sl28-vpd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVMEM layout of the Kontron SMARC-sAL28 vital product data
> +
> +maintainers:
> +  - Michael Walle <michael@...le.cc>
> +
> +description:
> +  The vital product data (VPD) of the sl28 boards contains a serial
> +  number and a base MAC address. The actual MAC addresses for the
> +  on-board ethernet devices are derived from this base MAC address by
> +  adding an offset.
> +
> +select: false
> +
> +properties:
> +  compatible:
> +    const: kontron,sl28-vpd
> +
> +  serial-number:
> +    type: object

       additionalProperties: false

With that,

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

> +    description: The board's serial number
> +
> +  base-mac-address:
> +    type: object
> +    description:
> +      Base MAC address for all on-module network interfaces. The first
> +      argument of the phandle will be treated as an offset.
> +
> +    properties:
> +      "#nvmem-cell-cells":
> +        const: 1
> +
> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +      otp-1 {
> +          compatible = "user-otp";
> +
> +          nvmem-layout {
> +              compatible = "kontron,sl28-vpd";
> +
> +              serial_number: serial-number {
> +              };
> +
> +              base_mac_address: base-mac-address {
> +                  #nvmem-cell-cells = <1>;
> +              };
> +          };
> +      };
> +
> +...
> diff --git a/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml b/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml
> index ecc7c37cbc1f..f64ea2fa362d 100644
> --- a/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml
> @@ -17,6 +17,9 @@ description: |
>    define and might require dynamic reading of the NVMEM device in order to
>    perform their parsing. The nvmem-layout container is here to describe these.
>  
> +oneOf:
> +  - $ref: kontron,sl28-vpd.yaml
> +
>  properties:
>    compatible: true
>  
> -- 
> 2.34.1
> 
>