linux-kernel - Re: [PATCH 1/2] dt-bindings: crypto: qcom,prng: document SM8550

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Date:   Tue, 22 Aug 2023 18:04:08 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Om Prakash Singh <quic_omprsing@...cinc.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Vinod Koul <vkoul@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-crypto@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: crypto: qcom,prng: document SM8550

On 22.08.2023 16:54, Om Prakash Singh wrote:
> PRNG Block on most of newer target from Qualcomm have some configuration where clock is configured by security firmware.
> 
> Adding separate compatible string for each platform is overhead.
> 
> We need to introduce common compatible string that can be used for all platforms with same configuration.
> 
> I would suggest to use "qcom,rng-ee" for newer platform, dropping "p" also signifies it is not a Pseudo Random Number Generator.
Please reply inline and don't top-post.


Is this what you're trying to say?

1. sort out the clock requirements for designs where Linux manages it
   vs where the FW does so

2. introduce a new compatible for SoCs implementing a TRNG

3. for SoCs in 2., register the TRNG as a hwrng device


?

Konrad