linux-kernel - Re: [PATCH 0/2] Add TRNG node for x1e80100 SoC

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Message-ID: <9a8a4774-1a04-405d-8022-73ef3e28bb71@oss.qualcomm.com>
Date: Tue, 9 Dec 2025 15:17:04 +0800
From: Wenjia Zhang <wenjia.zhang@....qualcomm.com>
To: Harshal Dev <harshal.dev@....qualcomm.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...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 0/2] Add TRNG node for x1e80100 SoC


On 11/25/2025 1:08 AM, Harshal Dev wrote:
> Add device-tree nodes to enable TRNG for x1e80100 SoC
>
> Signed-off-by: Harshal Dev <harshal.dev@....qualcomm.com>
> ---
> Harshal Dev (2):
>        dt-bindings: crypto: qcom,prng: document x1e80100
>        arm64: dts: qcom: x1e80100: add TRNG node
>
>   Documentation/devicetree/bindings/crypto/qcom,prng.yaml | 1 +
>   arch/arm64/boot/dts/qcom/x1e80100.dtsi                  | 5 +++++
>   2 files changed, 6 insertions(+)
> ---
> base-commit: d13f3ac64efb868d09cb2726b1e84929afe90235
> change-id: 20251124-trng_dt_binding_x1e80100-94ec1f83142b
>
> Best regards,

Tested-by: Wenjia Zhang <wenjia.zhang@....qualcomm.com> # on x1e80100

root@...ntu:/usr/Testools# cat /sys/class/misc/hw_random/rng_available
smccc_trng qcom_hwrng
root@...ntu:/usr/Testools# cat /sys/class/misc/hw_random/rng_current
smccc_trng
root@...ntu:/usr/Testools# echo qcom_hwrng > /sys/class/misc/hw_random/rng_current
root@...ntu:/usr/Testools# cat /sys/class/misc/hw_random/rng_current
qcom_hwrng
root@...ntu:/usr/Testools# cat /dev/random | rngtest -c 1000
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: 20000032
rngtest: FIPS 140-2 successes: 1000
rngtest: FIPS 140-2 failures: 0
rngtest: FIPS 140-2(2001-10-10) Monobit: 0
rngtest: FIPS 140-2(2001-10-10) Poker: 0
rngtest: FIPS 140-2(2001-10-10) Runs: 0
rngtest: FIPS 140-2(2001-10-10) Long run: 0
rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
rngtest: input channel speed: (min=2.328; avg=12.908; max=9.313)Gibits/s
rngtest: FIPS tests speed: (min=123.854; avg=204.373; max=254.313)Mibits/s
rngtest: Program run time: 94908 microseconds

Regards,
Wenjia