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| author | Mary Ruthven <mruthven@chromium.org> | 2017-08-01 15:30:54 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-08-17 20:41:56 -0700 |
| commit | a0c2fa80cd5e3c8dec89189d5c40075d6d210259 (patch) | |
| tree | 205f7fe9bb1d1fe4875b180a35159eba3dd76664 | |
| parent | 321625dc1144ca3efef715997a09794f9fd3e9fd (diff) | |
| download | chrome-ec-a0c2fa80cd5e3c8dec89189d5c40075d6d210259.tar.gz | |
cr50: add delay after soft reset
Add a delay to allow the clocks and usb signals to settle.
BUG=b:63767046,b:63867566
BRANCH=cr50
TEST=put the eve ec into hibernate, wait until cr50 enters deep sleep,
use the uart to wake it up, and verify that it eventually reenters deep
sleep
Change-Id: I26463ce3e00996368a791a245b0f9de01737478c
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/598448
Reviewed-by: Marius Schilder <mschilder@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
| -rw-r--r-- | chip/g/usb.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/chip/g/usb.c b/chip/g/usb.c index 7e1d7e75e6..03e26bf589 100644 --- a/chip/g/usb.c +++ b/chip/g/usb.c @@ -1209,6 +1209,15 @@ static void usb_softreset(void) return; } /* TODO: Wait 3 PHY clocks before returning */ + +#ifdef BOARD_CR50 + /* + * TODO(b/63867566): This delay is added to get usb to suspend after + * resume from deep sleep. Find out what the root cause is and add a + * fix. + */ + usleep(100); +#endif } void usb_connect(void) |