Hello Krzysztof,
I can confirm that this also works on a Odroid-X2, so I guess it's safe
to enable the PRNG for all Exynos4412-based Odroid devices.
Any chance that you might also take a look at the other hwcrypto stuff
on the SoC ('samsung,exynos4210-secss' compatible)?
With best wishes,
Tobias
Krzysztof Kozlowski wrote:
> Hi,
>
>
> The patchset adds necessary clock from Security SubSystem (SSS)
> and enables the PRNG module of Exynos for Trats2 board.
>
> The first patch (clock) is required for other ones so please
> take everything in one step.
>
> The actual Device Tree support (and compatible) was sent in separate
> patch:
> - https://patchwork.kernel.org/patch/7432891/
> - http://marc.info/?l=linux-crypto-vger&m=144522952725052&w=2
>
> The device can be tested (after applying both patchsets) with:
> $ echo exynos > /sys/class/misc/hw_random/rng_current
> $ dd if=/dev/hwrng of=/dev/null bs=1 count=16
>
>
> Best regards,
> Krzysztof
>
> Krzysztof Kozlowski (3):
> clk: samsung: exynos4: Add SSS gate clock
> ARM: dts: Add PRNG module for exynos4
> ARM: dts: Enable PRNG module on exynos4412-trats2
>
> arch/arm/boot/dts/exynos4.dtsi | 8 ++++++++
> arch/arm/boot/dts/exynos4412-trats2.dts | 4 ++++
> drivers/clk/samsung/clk-exynos4.c | 1 +
> include/dt-bindings/clock/exynos4.h | 1 +
> 4 files changed, 14 insertions(+)
>
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