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Revert "crypto: caam - adjust RNG timing to support more devices"

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This reverts commit ef492d0803.

This patch breaks the RNG on i.MX8MM.

Reported-by: Bastian Krause <bst@pengutronix.de>
Link: https://lore.kernel.org/all/e1f3f073-9d5e-1bae-f4f8-08dc48adad62@pengutronix.de/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-08-18 16:47:02 +08:00
parent 419caed6cc
commit 83874b8e97
1 changed files with 2 additions and 2 deletions
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4
drivers/crypto/caam/ctrl.c
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@ -382,8 +382,8 @@ static void kick_trng(struct device *dev, int ent_delay)
val = ent_delay; val = ent_delay;
/* min. freq. count, equal to 1/4 of the entropy sample length */ /* min. freq. count, equal to 1/4 of the entropy sample length */
wr_reg32(&r4tst->rtfrqmin, val >> 2); wr_reg32(&r4tst->rtfrqmin, val >> 2);
/* max. freq. count, equal to 16 times the entropy sample length */ /* disable maximum frequency count */
wr_reg32(&r4tst->rtfrqmax, val << 4); wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
} }
wr_reg32(&r4tst->rtsdctl, (val << RTSDCTL_ENT_DLY_SHIFT) | wr_reg32(&r4tst->rtsdctl, (val << RTSDCTL_ENT_DLY_SHIFT) |