diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2023-08-18 11:47:02 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-08-18 11:47:02 +0300 |
| commit | 83874b8e97f895e62d9ab03223318176d5e78203 (patch) | |
| tree | 2640138ec6a59f168a152a53d7c19f9ec6f763f4 /drivers/crypto | |
| parent | 419caed6cc77f19148faefe13515f8685ede219b (diff) | |
| download | linux-83874b8e97f895e62d9ab03223318176d5e78203.tar.xz | |
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>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/ctrl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index ff9ddbbca377..68e73775392d 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -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) | |