Messages in this thread | | | From | Jernej Škrabec <> | Subject | Re: [PATCH v2 2/3] crypto: sun8i-ce - Add TRNG clock to the D1 variant | Date | Thu, 05 Jan 2023 17:29:34 +0100 |
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Dne sobota, 31. december 2022 ob 23:01:44 CET je Samuel Holland napisal(a): > At least the D1 variant requires a separate clock for the TRNG. > Without this clock enabled, reading from /dev/hwrng reports: > > sun8i-ce 3040000.crypto: DMA timeout for TRNG (tm=96) on flow 3 > > Experimentation shows that the necessary clock is the SoC's internal > RC oscillator. This makes sense, as noise from the oscillator can be > used as a source of entropy. > > Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Best regards, Jernej
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