From ef492d080302913e85122a2d92efa2ca174930f8 Mon Sep 17 00:00:00 2001 From: Victoria Milhoan Date: Mon, 12 Jun 2023 10:26:15 +0200 Subject: [PATCH] crypto: caam - adjust RNG timing to support more devices MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Adjust RNG timing parameters to support more i.MX6 devices. Signed-off-by: Victoria Milhoan Signed-off-by: Dan Douglass Signed-off-by: Vipul Kumar Signed-off-by: Horia Geantă Reviewed-by: Gaurav Jain Signed-off-by: Herbert Xu --- drivers/crypto/caam/ctrl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index af0db18..ee6478e 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -389,8 +389,8 @@ static void kick_trng(struct device *dev, int ent_delay) wr_reg32(&r4tst->rtsdctl, val); /* min. freq. count, equal to 1/4 of the entropy sample length */ wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2); - /* disable maximum frequency count */ - wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE); + /* max. freq. count, equal to 16 times the entropy sample length */ + wr_reg32(&r4tst->rtfrqmax, ent_delay << 4); /* read the control register */ val = rd_reg32(&r4tst->rtmctl); start_rng: -- 2.7.4