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| author | Vic (Chun-Ju) Yang <victoryang@chromium.org> | 2013-11-27 12:02:26 +0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-11-27 13:38:30 +0000 |
| commit | 84db5c754944e3316cd13537c25656afc07603ea (patch) | |
| tree | 59d715c367aab3cd47b5c94a472cb997a439d2ab | |
| parent | a981a1fa1637196f486d2c067722ecc71edeb1b0 (diff) | |
| download | chrome-ec-84db5c754944e3316cd13537c25656afc07603ea.tar.gz | |
mec1322: Deassert iRESET_OUT on init
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>
| -rw-r--r-- | chip/mec1322/system.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/chip/mec1322/system.c b/chip/mec1322/system.c index f86f8e144f..09d3cd1b26 100644 --- a/chip/mec1322/system.c +++ b/chip/mec1322/system.c @@ -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) |