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| author | yoojin <yoojin7.lee@samsung.com> | 2014-08-04 18:43:49 +0900 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-08-05 01:35:05 +0000 |
| commit | 509d1e7f6248316edc347cbf07fa6f55ab499629 (patch) | |
| tree | 12b85cf9bb456b346603806924b389886210cd13 | |
| parent | 3b162523949d29d44e020daa7f613df533b9abce (diff) | |
| download | chrome-ec-509d1e7f6248316edc347cbf07fa6f55ab499629.tar.gz | |
Winky : Change power sequence for RSMRST# on BYT-M
RSMRST# has to come 10us after the P1.0V is stable.
Before, RSMRST# was high before P1.0V_AUX and P1.8V_AUX high.
So, 1.1ms Delay was added on EC code.
On this, RSMRST# is high after all SUS_Rails up.
(P3.3V_AUX, P1.0V_AUX and P1.8V_AUX)
BUG=chrome-os-partner:31116
TEST=emerge-winky chromeos-ec
Measure signal waveforms in power up sequence.
Change-Id: I55af36a6f4f2e7ea44ddf6b576df54f55cd3c8b0
Reviewed-on: https://chromium-review.googlesource.com/210954
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: YongBeum Ha <ybha@samsung.com>
Tested-by: YongBeum Ha <ybha@samsung.com>
Commit-Queue: YongBeum Ha <ybha@samsung.com>
| -rwxr-xr-x | power/baytrail.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/power/baytrail.c b/power/baytrail.c index 921b642f3d..16764dd803 100755 --- a/power/baytrail.c +++ b/power/baytrail.c @@ -199,6 +199,7 @@ enum power_state power_handle_state(enum power_state state) return POWER_G3; } + usleep(1100); /* Deassert RSMRST# */ gpio_set_level(GPIO_PCH_RSMRST_L, 1); |