linux-kernel - Re: [PATCH 1/2] dt-bindings: lan966x-otpc: document Lan966X OTPC

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Date:   Fri, 19 Aug 2022 09:52:50 +0300
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     srinivas.kandagatla@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Subject: Re: [PATCH 1/2] dt-bindings: lan966x-otpc: document Lan966X OTPC

On 18/08/2022 19:44, Horatiu Vultur wrote:
> Document Lan966x OTP controller.
> 
> Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
> ---
>  .../nvmem/microchip,lan966x-otpc.yaml         | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/microchip,lan966x-otpc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/microchip,lan966x-otpc.yaml b/Documentation/devicetree/bindings/nvmem/microchip,lan966x-otpc.yaml
> new file mode 100644
> index 000000000000..b19465971930
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/microchip,lan966x-otpc.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/microchip,lan966x-otpc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip LAN966X OTP Controller (OTPC)
> +
> +maintainers:
> +  - Horatiu Vultur <horatiu.vultur@...rochip.com>
> +
> +description: |
> +  OTP controller drives a NVMEM memory where system specific data
> +  (e.g. hardware configuration settings, chip identifiers) or
> +  user specific data could be stored.
> +
> +allOf:
> +  - $ref: "nvmem.yaml#"

No need for quotes.

> +
> +properties:
> +  compatible:
> +    items:
> +      - const: microchip,lan966x-otpc

No wildcards in compatible (which will also affect the file name as it
should match the compatible).

> +      - const: syscon

Is OTP controller also system controller register region? This is a bit
odd and looks like hack not to use nvmem subsystem.

> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    otpc: otp@...21000 {
> +        compatible = "microchip,lan966x-otpc", "syscon";
> +        reg = <0xe0021000 0x300>;
> +    };
> +
> +...


Best regards,
Krzysztof