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-rw-r--r--drivers/crypto/caam/ctrl.c4
-rw-r--r--drivers/crypto/caam/regs.h1
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 3cade79ea41e..8908d040b1f2 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -355,8 +355,8 @@ static void kick_trng(struct platform_device *pdev, 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);
- /* max. freq. count, equal to 8 times the entropy sample length */
- wr_reg32(&r4tst->rtfrqmax, ent_delay << 3);
+ /* disable maximum frequency count */
+ wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
/* put RNG4 into run mode */
clrbits32(&r4tst->rtmctl, RTMCTL_PRGM);
}
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index f48e344ffc39..b8bd980ac00a 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -286,6 +286,7 @@ struct rng4tst {
u32 rttotsam; /* PRGM=0: total samples register */
};
u32 rtfrqmin; /* frequency count min. limit register */
+#define RTFRQMAX_DISABLE (1 << 20)
union {
u32 rtfrqmax; /* PRGM=1: freq. count max. limit register */
u32 rtfrqcnt; /* PRGM=0: freq. count register */