diff options
Diffstat (limited to 'drivers/crypto/fsl/jr.c')
| -rw-r--r-- | drivers/crypto/fsl/jr.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/crypto/fsl/jr.c b/drivers/crypto/fsl/jr.c index 1d951cf0a6..85a3dac796 100644 --- a/drivers/crypto/fsl/jr.c +++ b/drivers/crypto/fsl/jr.c @@ -623,7 +623,7 @@ static void kick_trng(int ent_delay, ccsr_sec_t *sec) static int rng_init(uint8_t sec_idx, ccsr_sec_t *sec) { - int ret, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN; + int ret, gen_sk, ent_delay = RTSDCTL_ENT_DLY; struct rng4tst __iomem *rng = (struct rng4tst __iomem *)&sec->rng; u32 inst_handles; @@ -652,6 +652,15 @@ static int rng_init(uint8_t sec_idx, ccsr_sec_t *sec) * the RNG. */ ret = instantiate_rng(sec_idx, sec, gen_sk); + /* + * entropy delay is calculated via self-test method. + * self-test are run across different volatge, temp. + * if worst case value for ent_dly is identified, + * loop can be skipped for that platform. + */ + if (IS_ENABLED(CONFIG_MX6SX)) + break; + } while ((ret == -1) && (ent_delay < RTSDCTL_ENT_DLY_MAX)); if (ret) { printf("SEC%u: Failed to instantiate RNG\n", sec_idx); |