Re: [PATCH 2/2] dt-bindings: rng: Add MediaTek MT7981 TRNG

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On 15/02/2023 14:27, Daniel Golle wrote:
> Add documentation to describe the MediaTek true random number generator
> which is provided by ARM TrustedFirmware-A of the MT7981.
> 
> Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>
> ---
>  .../bindings/rng/mediatek,mt7981-rng.yaml     | 39 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 40 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml
> 
> diff --git a/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml b/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml
> new file mode 100644
> index 000000000000..d577d60538d8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/rng/mediatek,mt7981-rng.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Random number generator (v2/SMC)
> +
> +maintainers:
> +  - Daniel Golle <daniel@xxxxxxxxxxxxxx>
> +
> +properties:
> +  $nodename:
> +    pattern: "^rng$"

1. We don't enforce it in device bindings, so drop it.
2. It's not even correct. You have reg.


> +
> +  compatible:
> +    enum:
> +      - mediatek,mt7981-rng
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: rng

Drop clock-names and rely on index.

> +
> +required:
> +  - compatible

and reg?

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    rng {
> +      compatible = "mediatek,mt7981-rng";
> +    };

Best regards,
Krzysztof




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