diff options
| author | Nicolas Boichat <drinkcat@google.com> | 2017-07-22 01:42:59 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-07-25 20:08:34 -0700 |
| commit | 74d1a312e7aecab4ffc118e2aa33596169a6269d (patch) | |
| tree | d1aecfe3ff06297a3f70cc83e4d1f6103b59aed6 /board/hammer | |
| parent | fdbce2bcf46334ff7aa5de86b73d29ccb0805634 (diff) | |
| download | chrome-ec-74d1a312e7aecab4ffc118e2aa33596169a6269d.tar.gz | |
poppy/hammer: Increase sideband wake pulse to 500us
100us is hard to measure reliably on poppy side, let's increase to
500us, and widen the range.
BRANCH=none
BUG=b:63818321
TEST=Flash staff and soraka EC, check that pulses are detected
correctly.
Change-Id: I1c29a42c70da0efa0318a619bb83e451b9f168f4
Reviewed-on: https://chromium-review.googlesource.com/581572
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Diffstat (limited to 'board/hammer')
| -rw-r--r-- | board/hammer/board.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/board/hammer/board.c b/board/hammer/board.c index f3d32f468c..2638c0ccec 100644 --- a/board/hammer/board.c +++ b/board/hammer/board.c @@ -127,7 +127,7 @@ void board_config_pre_init(void) void board_usb_wake(void) { /* - * Poke detection pin for less than 100us, we disable interrupts + * Poke detection pin for about 500us, we disable interrupts * to make sure that we do not get preempted (setting GPIO high * for too long would prevent pulse detection on lid EC side from * working properly, or even kill hammer power if it is held for @@ -135,7 +135,7 @@ void board_usb_wake(void) */ interrupt_disable(); gpio_set_flags(GPIO_BASE_DET, GPIO_OUT_HIGH); - udelay(100); + udelay(500); gpio_set_flags(GPIO_BASE_DET, GPIO_INPUT); interrupt_enable(); } |