Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-09 14:50:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

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

Browse Source 
This reverts commit ef492d080302913e85122a2d92efa2ca174930f8.

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/crypto/caam/ctrl.c
View File

@ -382,8 +382,8 @@ static void kick_trng(struct device *dev, int ent_delay)
val = ent_delay;
/* min. freq. count, equal to 1/4 of the entropy sample length */
wr_reg32(&r4tst->rtfrqmin, val >> 2);
/* max. freq. count, equal to 16 times the entropy sample length */
wr_reg32(&r4tst->rtfrqmax, val << 4);
/* disable maximum frequency count */
wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
}
wr_reg32(&r4tst->rtsdctl, (val << RTSDCTL_ENT_DLY_SHIFT) |