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authorNeil Armstrong <neil.armstrong@linaro.org>2023-10-03 09:10:19 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2023-10-13 18:27:27 +0800
commit63b299a18694b89d6c814e0d86230d09542bed4c (patch)
tree88ec54335911cf9b0f1062142da62056bb84eace /Documentation
parent2c98594373c01739c2a2b3f056b8f2f850c26dc7 (diff)
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: Om Prakash Singh <quic_omprsing@quicinc.com> Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org> Reviewed-by: Om Prakash Singh <quic_omprsing@quicinc.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/crypto/qcom,prng.yaml25
1 files changed, 20 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/crypto/qcom,prng.yaml b/Documentation/devicetree/bindings/crypto/qcom,prng.yaml
index bb42f4588b40..04ddcc0f7165 100644
--- a/Documentation/devicetree/bindings/crypto/qcom,prng.yaml
+++ b/Documentation/devicetree/bindings/crypto/qcom,prng.yaml
@@ -11,9 +11,14 @@ maintainers:
properties:
compatible:
- enum:
- - qcom,prng # 8916 etc.
- - qcom,prng-ee # 8996 and later using EE
+ 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
@@ -28,8 +33,18 @@ properties:
required:
- compatible
- reg
- - clocks
- - clock-names
+
+allOf:
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ const: qcom,trng
+ then:
+ required:
+ - clocks
+ - clock-names
additionalProperties: false