Re: [PATCH v2 2/3] crypto: sun8i-ce - Add TRNG clock to the D1 variant

[Jernej Škrabec]

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@xxxxxxxxxxxx>

Reviewed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>

Best regards,
Jernej