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@xxxxxxxxxx> --- 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@xxxxxxxxxxx) 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@xxxxxxxxxx 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@xxxxxxxxxx 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@xxxxxxxxxx --- 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@xxxxxxxxxx>
