According documentation, it is NIST certified TRNG.
So, set high quality to let the HWRNG framework automatically use it.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
drivers/crypto/caam/caamrng.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index 41398da3edf4..684c0bc88dfd 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -292,10 +292,16 @@ static int caam_init_rng(struct caam_rng_ctx *ctx, struct device *jrdev)
return 0;
}
+/*
+ * hwrng register struct
+ * The trng is suppost to have 100% entropy, and thus
+ * we register with a very high quality value.
+ */
static struct hwrng caam_rng = {
.name = "rng-caam",
.cleanup = caam_cleanup,
.read = caam_read,
+ .quality = 999,
};
static void __exit caam_rng_exit(void)
--
2.11.0
