diff options
| author | Victoria Milhoan <vicki.milhoan@freescale.com> | 2014-11-12 09:58:24 -0700 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@nxp.com> | 2016-01-20 14:28:35 -0600 |
| commit | 5ff8995f00237fd4c915b3b10c7887a8a002a9a3 (patch) | |
| tree | fc6401f2b5cffa2b014eadd77962792d68233e45 /drivers/crypto | |
| parent | 7c2ae0cde8de7529e3a03ab34725d5773a59234d (diff) | |
MLK-9769-9 Adjust RNG timing to support more devices
Adjust RNG timing parameters to support more i.MX6 devices.
Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
Signed-off-by: Dan Douglass <dan.douglass@freescale.com>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/ctrl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index ade7166bd86f..e404b84199a7 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -359,8 +359,8 @@ 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); - /* disable maximum frequency count */ - wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE); + /* max. freq. count, equal to 16 times the entropy sample length */ + wr_reg32(&r4tst->rtfrqmax, ent_delay << 4); /* read the control register */ val = rd_reg32(&r4tst->rtmctl); /* @@ -368,6 +368,7 @@ static void kick_trng(struct platform_device *pdev, int ent_delay) * and statistical checker */ setbits32(&val, RTMCTL_SAMP_MODE_RAW_ES_SC); + /* put RNG4 into run mode */ clrbits32(&val, RTMCTL_PRGM); /* write back the control register */ |