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Date:   Mon, 11 Sep 2023 10:09:58 -0500
From:   Rob Herring <robh@kernel.org>
To:     Gatien Chevallier <gatien.chevallier@foss.st.com>
Cc:     Olivia Mackall <olivia@selenic.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Lionel Debieve <lionel.debieve@foss.st.com>,
        linux-crypto@vger.kernel.org, devicetree@vger.kernel.org,
        linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/10] dt-bindings: rng: add st,rng-lock-conf
Message-ID: <20230911150958.GA1255978-robh@kernel.org>
References: <20230908165120.730867-1-gatien.chevallier@foss.st.com>
 <20230908165120.730867-8-gatien.chevallier@foss.st.com>
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On Fri, Sep 08, 2023 at 06:51:17PM +0200, Gatien Chevallier wrote:
> If st,rng-lock-conf is set, the RNG configuration in RNG_CR, RNG_HTCR
> and RNG_NSCR will be locked. It is supported starting from the RNG
> version present in the STM32MP13

This should be squashed into the prior binding patch.

> 
> Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
> ---
>  .../devicetree/bindings/rng/st,stm32-rng.yaml      | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> index 59abdc85a9fb..0055f14a8e3f 100644
> --- a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> +++ b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> @@ -37,6 +37,20 @@ required:
>    - reg
>    - clocks
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - st,stm32mp13-rng
> +    then:
> +      properties:
> +        st,rng-lock-conf:
> +          type: boolean
> +          description: If set, the RNG configuration in RNG_CR, RNG_HTCR and
> +                       RNG_NSCR will be locked.

Define the property at the top-level and then restrict its presence in 
a if/then schema.

> +
>  additionalProperties: false

Did you test this property is allowed? No, because additionalProperties 
won't work with properties defined in if/then schemas.

>  
>  examples:
> -- 
> 2.25.1
>