we need to configure the TRNG to use more clocks per sample to handle the two back-to-back 64KiB random descriptor requests on higher frequency P5040s.
Signed-off-by: Kim Phillips <kim.phill...@freescale.com> --- fixes booting on the p5040, but since p5040 support isn't in 3.6, this can wait for 3.7. Also, Herbert, this: http://www.mail-archive.com/linux-crypto@vger.kernel.org/msg07586.html got dropped on the floor. drivers/crypto/caam/ctrl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 414ba20..bf20dd8 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -129,7 +129,7 @@ static int instantiate_rng(struct device *jrdev) /* * By default, the TRNG runs for 200 clocks per sample; - * 800 clocks per sample generates better entropy. + * 1600 clocks per sample generates better entropy. */ static void kick_trng(struct platform_device *pdev) { @@ -144,9 +144,9 @@ static void kick_trng(struct platform_device *pdev) /* put RNG4 into program mode */ setbits32(&r4tst->rtmctl, RTMCTL_PRGM); - /* 800 clocks per sample */ + /* 1600 clocks per sample */ val = rd_reg32(&r4tst->rtsdctl); - val = (val & ~RTSDCTL_ENT_DLY_MASK) | (800 << RTSDCTL_ENT_DLY_SHIFT); + val = (val & ~RTSDCTL_ENT_DLY_MASK) | (1600 << RTSDCTL_ENT_DLY_SHIFT); wr_reg32(&r4tst->rtsdctl, val); /* min. freq. count */ wr_reg32(&r4tst->rtfrqmin, 400); -- 1.7.12 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
