linux-kernel - Re: [PATCH v2] arm64: dts: meson: g12a: Add hwrng node

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Message-ID: <7hsgsqiahj.fsf@baylibre.com>
Date:   Mon, 03 Jun 2019 15:12:56 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Neil Armstrong <narmstrong@...libre.com>
Cc:     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

Martin Blumenstingl <martin.blumenstingl@...glemail.com> writes:

> 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>

Queued for v5.3,

Thanks,

Kevin