Commit 83874b8e authored by Herbert Xu's avatar Herbert Xu
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Revert "crypto: caam - adjust RNG timing to support more devices" 



This reverts commit ef492d08.

This patch breaks the RNG on i.MX8MM.

Reported-by: default avatarBastian Krause <bst@pengutronix.de>
Link: https://lore.kernel.org/all/e1f3f073-9d5e-1bae-f4f8-08dc48adad62@pengutronix.de/


Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 419caed6

drivers/crypto/caam/ctrl.c

+2 −2
Original line number Diff line number Diff line
@@ -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) |