Messages in this thread | | | Date | Sat, 20 Feb 2021 20:09:30 +0100 | From | Andrew Lunn <> | Subject | Re: [PATCH] hwrng: bcm2835: set quality to 1000 |
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On Sat, Feb 20, 2021 at 06:47:40PM +0100, Álvaro Fernández Rojas wrote: > This allows devices without a high precission timer to reduce boot from >100s > to <30s. > diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c > index 1a7c43b43c6b..4b48cb7176b0 100644 > --- a/drivers/char/hw_random/bcm2835-rng.c > +++ b/drivers/char/hw_random/bcm2835-rng.c > @@ -163,6 +163,7 @@ static int bcm2835_rng_probe(struct platform_device *pdev) > priv->rng.init = bcm2835_rng_init; > priv->rng.read = bcm2835_rng_read; > priv->rng.cleanup = bcm2835_rng_cleanup; > + priv->rng.quality = 1000;
Hi Alvero
* @quality: Estimation of true entropy in RNG's bitstream * (in bits of entropy per 1024 bits of input; * valid values: 1 to 1024, or 0 for unknown).
How did you determine this device produces 1000 bits of true entropy per 1024?
Andrew
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