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Message-Id: <20231003-topic-sm8550-rng-v4-0-255e4d0ba08e@linaro.org>
Date:   Tue, 03 Oct 2023 09:10:18 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.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,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Om Prakash Singh <quic_omprsing@...cinc.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bjorn Andersson <quic_bjorande@...cinc.com>
Subject: [PATCH v4 0/5] arm64: qcom: sm8x50: enable RNG

Enable RNG on SM8550 & SM8450 by reverting the PRNG bindings & DT
for SM8450 and correctly document it as a True Random Number Generator.

- SM8550 QRD test run:

smccc_trng qcom_hwrng 

qcom_hwrng

rngtest 6.15
Copyright (c) 2004 by Henrique de Moraes Holschuh
This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

rngtest: starting FIPS tests...
rngtest: bits received from input: 209420032
rngtest: FIPS 140-2 successes: 10461
rngtest: FIPS 140-2 failures: 10
rngtest: FIPS 140-2(2001-10-10) Monobit: 1
rngtest: FIPS 140-2(2001-10-10) Poker: 2
rngtest: FIPS 140-2(2001-10-10) Runs: 3
rngtest: FIPS 140-2(2001-10-10) Long run: 4
rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
rngtest: input channel speed: (min=9.219; avg=63.879; max=19073.486)Mibits/s
rngtest: FIPS tests speed: (min=24.965; avg=29.093; max=118.469)Mibits/s
rngtest: Program run time: 10002827 microseconds

- SM8450 HDK test run:

qcom_hwrng

rngtest 6.15
Copyright (c) 2004 by Henrique de Moraes Holschuh
This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

rngtest: starting FIPS tests...
rngtest: bits received from input: 420580032
rngtest: FIPS 140-2 successes: 21014
rngtest: FIPS 140-2 failures: 15
rngtest: FIPS 140-2(2001-10-10) Monobit: 2
rngtest: FIPS 140-2(2001-10-10) Poker: 0
rngtest: FIPS 140-2(2001-10-10) Runs: 7
rngtest: FIPS 140-2(2001-10-10) Long run: 6
rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
rngtest: input channel speed: (min=15.711; avg=50.033; max=32.493)Mibits/s
rngtest: FIPS tests speed: (min=136.239; avg=203.833; max=227.065)Mibits/s
rngtest: Program run time: 10000978 microseconds

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
Changes in v4:
- changed to an enum in first bindings patch to simplify sm8550 change
- integrate Om's patch from (https://lore.kernel.org/all/20230926102005.3277045-1-quic_omprsing@quicinc.com)
  to simplify maintainer's life
- rebased on next-20230929
- dropped already applied revert
- Link to v3: https://lore.kernel.org/r/20230828-topic-sm8550-rng-v3-0-7a0678ca7988@linaro.org

Changes in v3:
- Removed invalid character in commit msg
- Added review tags
- Removed applied patch 1
- Link to v2: https://lore.kernel.org/r/20230824-topic-sm8550-rng-v2-0-dfcafbb16a3e@linaro.org

Changes in v2:
- Revert SM8450 DT & bindings
- Add new qcom,trng compatible and use it for SM8450 & SM8550
- Explicitly didn't collect the Reviewed-by tags due to the compatible change
- Link to v1: https://lore.kernel.org/r/20230822-topic-sm8550-rng-v1-0-8e10055165d1@linaro.org

---
Neil Armstrong (4):
      dt-bindings: crypto: qcom,prng: document that RNG on SM8450 is a TRNG
      dt-bindings: crypto: qcom,prng: document SM8550
      arm64: dts: qcom: sm8550: add TRNG node
      arm64: dts: qcom: sm8450: add TRNG node

Om Prakash Singh (1):
      crypto: qcom-rng - Add hw_random interface support

 .../devicetree/bindings/crypto/qcom,prng.yaml      | 26 +++++++--
 arch/arm64/boot/dts/qcom/sm8450.dtsi               |  5 ++
 arch/arm64/boot/dts/qcom/sm8550.dtsi               |  5 ++
 drivers/crypto/qcom-rng.c                          | 65 +++++++++++++++++++---
 4 files changed, 89 insertions(+), 12 deletions(-)
---
base-commit: df964ce9ef9fea10cf131bf6bad8658fde7956f6
change-id: 20230822-topic-sm8550-rng-c83142783e20

Best regards,
-- 
Neil Armstrong <neil.armstrong@...aro.org>

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