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37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
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From 5bc830089553a445952d69a73e0a9f5fdf9d0f19 Mon Sep 17 00:00:00 2001
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From: Victoria Milhoan <vicki.milhoan@freescale.com>
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Date: Wed, 12 Nov 2014 09:58:24 -0700
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Subject: [PATCH] MLK-9769-9 crypto: caam - adjust RNG timing to support more
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devices
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Adjust RNG timing parameters to support more i.MX6 devices.
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Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
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Signed-off-by: Dan Douglass <dan.douglass@freescale.com>
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Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
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(cherry picked from commit 57eabb638430ec68490d192738640b95a3507b1d)
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Changed commit headline prefix.
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Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
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---
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drivers/crypto/caam/ctrl.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/crypto/caam/ctrl.c
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+++ b/drivers/crypto/caam/ctrl.c
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@@ -364,8 +364,8 @@ static void kick_trng(struct platform_de
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wr_reg32(&r4tst->rtsdctl, val);
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/* min. freq. count, equal to 1/4 of the entropy sample length */
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wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2);
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- /* disable maximum frequency count */
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- wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE);
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+ /* max. freq. count, equal to 16 times the entropy sample length */
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+ wr_reg32(&r4tst->rtfrqmax, ent_delay << 4);
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/* read the control register */
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val = rd_reg32(&r4tst->rtmctl);
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start_rng:
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