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(+)