diff options
| author | Bill Richardson <wfrichar@chromium.org> | 2014-05-15 12:56:30 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-07-16 07:16:51 +0000 |
| commit | 41c749d9d829a601011d38bb93b546363d8f1758 (patch) | |
| tree | 94ce7371de375f7304cfb0854d08e6bbd9af123e | |
| parent | 241cc626850175acac7a2e95cddbeb269f75c1ba (diff) | |
| download | chrome-ec-41c749d9d829a601011d38bb93b546363d8f1758.tar.gz | |
Samus: Reduce S3S0 signal delay to 5ms.
With only mini-PCIe devices, we don't need to wait for the full 99ms that
PCIe devices require.
BUG=chrome-os-partner:25530
BRANCH=ToT
TEST=manual
Log in, connect to the web via WiFi. Close the lid, wait a bit, open the
lid. WiFi should resume and still work.
Change-Id: I24d6ae95607f8f9a0fa70aebf5eaa0ebd68260f6
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/200084
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
| -rw-r--r-- | board/samus/power_sequence.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/board/samus/power_sequence.c b/board/samus/power_sequence.c index 3f7b5578b5..aabb83d78d 100644 --- a/board/samus/power_sequence.c +++ b/board/samus/power_sequence.c @@ -340,8 +340,12 @@ enum power_state power_handle_state(enum power_state state) */ disable_sleep(SLEEP_MASK_AP_RUN); - /* Wait 99ms after all voltages good */ - msleep(99); + /* + * Wait a bit for all voltages to be good. PCIe devices need + * 99ms, but mini-PCIe devices only need 1ms. Intel recommends + * at least 5ms between ALL_SYS_PWRGD and SYS_PWROK. + */ + msleep(5); /* * Throttle CPU if necessary. This should only be asserted |