diff options
Diffstat (limited to 'drivers/crypto')
| -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 aa527ec954..35606688af 100644 --- a/drivers/crypto/fsl/jr.c +++ b/drivers/crypto/fsl/jr.c @@ -408,8 +408,17 @@ static void kick_trng(int ent_delay) sec_out32(&rng->rtfreqmin, ent_delay >> 2); /* disable maximum frequency count */ sec_out32(&rng->rtfreqmax, RTFRQMAX_DISABLE); + /* read the control register */ + val = sec_in32(&rng->rtmctl); + /* + * select raw sampling in both entropy shifter + * and statistical checker + */ + sec_setbits32(&val, RTMCTL_SAMP_MODE_RAW_ES_SC); /* put RNG4 into run mode */ - sec_clrbits32(&rng->rtmctl, RTMCTL_PRGM); + sec_clrbits32(&val, RTMCTL_PRGM); + /* write back the control register */ + sec_out32(&rng->rtmctl, val); } static int rng_init(void) |