Re: [PATCH v2 2/3] crypto: sun8i-ce - Add TRNG clock to the D1 variant
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From: Jernej Škrabec <jernej.skrabec@gmail.com>
Date: 2023-01-05 16:30:15
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linux-crypto, linux-devicetree, linux-riscv, linux-sunxi, lkml
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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel