Commit ef492d08 authored by Victoria Milhoan's avatar Victoria Milhoan Committed by Herbert Xu
Browse files

crypto: caam - adjust RNG timing to support more devices 



Adjust RNG timing parameters to support more i.MX6 devices.

Signed-off-by: default avatarVictoria Milhoan <vicki.milhoan@freescale.com>
Signed-off-by: default avatarDan Douglass <dan.douglass@nxp.com>
Signed-off-by: default avatarVipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: default avatarHoria Geantă <horia.geanta@nxp.com>
Reviewed-by: default avatarGaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent d614dcb2

drivers/crypto/caam/ctrl.c

+2 −2
Original line number Diff line number Diff line
@@ -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: