diff --git a/drivers/crypto/fsl/jr.c b/drivers/crypto/fsl/jr.c
index f99d59480c8..aa527ec954d 100644
--- a/drivers/crypto/fsl/jr.c
+++ b/drivers/crypto/fsl/jr.c
@@ -406,8 +406,8 @@ static void kick_trng(int ent_delay)
 	sec_out32(&rng->rtsdctl, val);
 	/* min. freq. count, equal to 1/4 of the entropy sample length */
 	sec_out32(&rng->rtfreqmin, ent_delay >> 2);
-	/* max. freq. count, equal to 8 times the entropy sample length */
-	sec_out32(&rng->rtfreqmax, ent_delay << 3);
+	/* disable maximum frequency count */
+	sec_out32(&rng->rtfreqmax, RTFRQMAX_DISABLE);
 	/* put RNG4 into run mode */
 	sec_clrbits32(&rng->rtmctl, RTMCTL_PRGM);
 }
diff --git a/include/fsl_sec.h b/include/fsl_sec.h
index ebb1ac6d40f..14f6633e326 100644
--- a/include/fsl_sec.h
+++ b/include/fsl_sec.h
@@ -49,6 +49,7 @@ struct rng4tst {
 		u32 rttotsam;	/* PRGM=0: total samples register */
 	};
 	u32 rtfreqmin;		/* frequency count min. limit register */
+#define RTFRQMAX_DISABLE       (1 << 20)
 	union {
 		u32 rtfreqmax;	/* PRGM=1: freq. count max. limit register */
 		u32 rtfreqcnt;	/* PRGM=0: freq. count register */