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Date: Mon, 27 May 2019 19:59:16 +0200
From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To: Neil Armstrong <narmstrong@...libre.com>
Cc: khilman@...libre.com, linux-amlogic@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] arm64: dts: meson: g12a: Add hwrng node
On Mon, May 27, 2019 at 2:51 PM Neil Armstrong <narmstrong@...libre.com> wrote:
>
> The Amlogic G12A has the hwrng module at the end of an unknown
> "EFUSE" bus.
>
> The hwrng is not enabled on the vendor G12A DTs, but is enabled on
> next generation SM1 SoC family sharing the exact same memory mapping.
>
> Let's add the "EFUSE" bus and the hwrng node.
>
> This hwrng has been checked with the rng-tools rngtest FIPS tool :
> rngtest: starting FIPS tests...
> rngtest: bits received from input: 1630240032
> rngtest: FIPS 140-2 successes: 81436
> rngtest: FIPS 140-2 failures: 76
> rngtest: FIPS 140-2(2001-10-10) Monobit: 10
> rngtest: FIPS 140-2(2001-10-10) Poker: 6
> rngtest: FIPS 140-2(2001-10-10) Runs: 26
> rngtest: FIPS 140-2(2001-10-10) Long run: 34
> rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
> rngtest: input channel speed: (min=3.784; avg=5687.521; max=19073.486)Mibits/s
> rngtest: FIPS tests speed: (min=47.684; avg=52.348; max=52.835)Mibits/s
> rngtest: Program run time: 30000987 microseconds
>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
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