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mec1322: Deassert iRESET_OUT on init

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iRESET_OUT must be deasserted before the host can boot, and it's also
the gating source of the internal nSIO_RESET signal. There is a delay
between deasserting iRESET_OUT and nSIO_RESET inactivated, so let's
deassert iRESET_OUT as early as possible.

BUG=chrome-os-partner:24107
TEST=Boot EVB and check iRESET_OUT value
BRANCH=None

Change-Id: I6647da00567e2651c2b49e1e767adee2d5276493
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/178171
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vic (Chun-Ju) Yang
2013-11-27 12:02:26 +08:00
committed by chrome-internal-fetch
parent a981a1fa16
commit 84db5c7549
1 changed files with 3 additions and 0 deletions
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3
chip/mec1322/system.c
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@@ -28,6 +28,9 @@ void system_pre_init(void)
{
/* Enable direct NVIC */
MEC1322_EC_INT_CTRL |= 1;
/* Deassert nSIO_RESET */
MEC1322_PCR_PWR_RST_CTL &= ~(1 << 0);
}
void system_reset(int flags)