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| author | Randall Spangler <rspangler@chromium.org> | 2014-01-24 08:12:04 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-01-24 19:38:18 +0000 |
| commit | 7263e4571d77d347ed8bd3ce261adddcc4c52c39 (patch) | |
| tree | a106598ec48a6eaa669e041b191e3156e2865425 | |
| parent | 44feb4b4e75b3373ce3c8e023b6c434ad7053d7d (diff) | |
| download | chrome-ec-7263e4571d77d347ed8bd3ce261adddcc4c52c39.tar.gz | |
rambi: Add delay between PP5000 and PP3300_DX enables
This may improve stability with power chaining.
BUG=chrome-os-partner:25271
BRANCH=rambi
TEST=boot system
Change-Id: Ia3d4776b7e47c4d3cbaa4d6f937241fd230243f2
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183739
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
| -rw-r--r-- | power/baytrail.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/power/baytrail.c b/power/baytrail.c index 3ef9b2b37b..4ceb720552 100644 --- a/power/baytrail.c +++ b/power/baytrail.c @@ -229,6 +229,7 @@ enum power_state power_handle_state(enum power_state state) case POWER_S3S0: /* Turn on power rails */ gpio_set_level(GPIO_PP5000_EN, 1); + usleep(3 * MSEC); /* Small delay; see crosbug.com/p/25271 */ gpio_set_level(GPIO_PP3300_DX_EN, 1); /* Enable wireless */ |