[PATCH 0/2] hwrng: exynos: enable GS101 TRNG support

[Tudor Ambarus]

On 10/22/25 12:19 PM, Tudor Ambarus wrote:
> Hi,
> 
> I propose the bindings to go through the Samsung tree as well so that we
> can match the compatible with the schema when pulling the DT patch.
> 
> Thanks!
> ta
> 
> ---
> Enable GS101 TRNG support. It works well with the current Exynos850 TRNG
> support. Tested on pixel 6 like this:
> 

the commands started with # and were removed from the cover letter.
I fill them in to avoid a resubmit:

# cat /sys/devices/virtual/misc/hw_random/rng_current> 10141400.rng
> 

dd if=/dev/hwrng bs=100000 count=1 > /dev/null> 1+0 records in
> 1+0 records out
> 100000 bytes (100 kB, 98 KiB) copied, 2.03619 s, 49.1 kB/s
> 

# rngtest -c 1000 < /dev/hwrng> rngtest 6.17
> ...
> 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=380.570; avg=385.422; max=386.964)Kibits/s
> rngtest: FIPS tests speed: (min=75.092; avg=81.784; max=84.771)Mibits/s
> rngtest: Program run time: 50908949 microseconds
> 
> To: Łukasz Stelmach <l.stelmach at samsung.com>
> To: Olivia Mackall <olivia at selenic.com>
> To: Herbert Xu <herbert at gondor.apana.org.au>
> To: Rob Herring <robh at kernel.org>
> To: Krzysztof Kozlowski <krzk+dt at kernel.org>
> To: Conor Dooley <conor+dt at kernel.org>
> To: Alim Akhtar <alim.akhtar at samsung.com>
> To: Peter Griffin <peter.griffin at linaro.org>
> To: André Draszik <andre.draszik at linaro.org>
> Cc: Krzysztof Kozlowski <krzk at kernel.org>
> Cc: semen.protsenko at linaro.org
> Cc: willmcvicker at google.com
> Cc: kernel-team at android.com
> Cc: linux-samsung-soc at vger.kernel.org
> Cc: linux-crypto at vger.kernel.org
> Cc: devicetree at vger.kernel.org
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> Signed-off-by: Tudor Ambarus <tudor.ambarus at linaro.org>
> 
> ---
> Tudor Ambarus (2):
>       dt-bindings: rng: add google,gs101-trng compatible
>       arm64: dts: exynos: gs101: add TRNG node
> 
>  .../devicetree/bindings/rng/samsung,exynos5250-trng.yaml       | 10 +++++++---
>  arch/arm64/boot/dts/exynos/google/gs101.dtsi                   |  9 +++++++++
>  2 files changed, 16 insertions(+), 3 deletions(-)
> ---
> base-commit: 8ebc2add3e2d076adc5cc3e8c9bef268f7f1cb31
> change-id: 20251022-gs101-trng-54b710218424
> 
> Best regards,