diff options
| author | Wai-Hong Tam <waihong@google.com> | 2020-10-30 19:09:30 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-11-02 22:51:58 +0000 |
| commit | 7c9baa4c0774075386981124b9a8dc8c3b8ce4c7 (patch) | |
| tree | 4f2f2dbfbbf8905a5f62e315ab3e82e7cdf36426 /board/trogdor | |
| parent | d6e6c7e861ecfb9628b8b735f3dbfe0d21cfd5d4 (diff) | |
| download | chrome-ec-7c9baa4c0774075386981124b9a8dc8c3b8ce4c7.tar.gz | |
Trogdor: Apply PD to sensors' interrupts before entering hibernate
Sensors are unpowered in hibernate. Apply PD to the interrupt lines
such that they don't float. Don't need to remove the PD as they will
be restored to the gpio.inc configs before the interrupts are enabled.
BRANCH=None
BUG=b:169595541
TEST=Triggered EC hibernate, woke up, and verified sensors working.
Change-Id: I18819700d454fbbc16b28f65dad9533d97aa7d4c
Signed-off-by: Wai-Hong Tam <waihong@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2511805
Reviewed-by: Alexandru M Stan <amstan@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Diffstat (limited to 'board/trogdor')
| -rw-r--r-- | board/trogdor/board.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/board/trogdor/board.c b/board/trogdor/board.c index 1fe0773230..a17e961f60 100644 --- a/board/trogdor/board.c +++ b/board/trogdor/board.c @@ -318,6 +318,15 @@ void board_hibernate(void) int i; /* + * Sensors are unpowered in hibernate. Apply PD to the + * interrupt lines such that they don't float. + */ + gpio_set_flags(GPIO_ACCEL_GYRO_INT_L, + GPIO_INPUT | GPIO_PULL_DOWN); + gpio_set_flags(GPIO_LID_ACCEL_INT_L, + GPIO_INPUT | GPIO_PULL_DOWN); + + /* * Enable the PPC power sink path before EC enters hibernate; * otherwise, ACOK won't go High and can't wake EC up. Check the * bug b/170324206 for details. |