Revert "crypto: caam - adjust RNG timing to support more devices"
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>
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index ff9ddbb..68e73775 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -382,8 +382,8 @@
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) |
