Commit 63b299a1 authored by Neil Armstrong's avatar Neil Armstrong Committed by Herbert Xu
Browse files

dt-bindings: crypto: qcom,prng: document that RNG on SM8450 is a TRNG 

It has been reported at [1] the RNG HW on SM8450 is in fact a True Random
Number Generator and no more Pseudo, document this by adding
a new qcom,trng and the corresponding SoC specific sm8450 compatible.

[1] https://lore.kernel.org/all/20230818161720.3644424-1-quic_omprsing@quicinc.com/



Suggested-by: default avatarOm Prakash Singh <quic_omprsing@quicinc.com>
Suggested-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: default avatarOm Prakash Singh <quic_omprsing@quicinc.com>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 2c985943

Documentation/devicetree/bindings/crypto/qcom,prng.yaml

+20 −5
Original line number Diff line number Diff line
@@ -11,9 +11,14 @@ maintainers: 


properties:

  compatible:

    enum:

    oneOf:

      - enum:

          - qcom,prng  # 8916 etc.

          - qcom,prng-ee  # 8996 and later using EE

      - items:

          - enum:

              - qcom,sm8450-trng

          - const: qcom,trng



  reg:

    maxItems: 1
@@ -28,6 +33,16 @@ properties: 
required:

  - compatible

  - reg



allOf:

  - if:

      not:

        properties:

          compatible:

            contains:

              const: qcom,trng

    then:

      required:

        - clocks

        - clock-names