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| author | gc <chao.ge@bitland.com.cn> | 2018-01-18 19:33:41 +0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2018-01-23 01:50:42 +0000 |
| commit | f125a9c6f1ef0a027a819a3bb313659e7ecddebf (patch) | |
| tree | 591f4528886ee425d8fe5acc640224928f633778 | |
| parent | 7e20e49df8f3fc73bd3a7c41625ee8f6a338dc1b (diff) | |
| download | chrome-ec-f125a9c6f1ef0a027a819a3bb313659e7ecddebf.tar.gz | |
hana/birch: Against the DUT can't probe G-Sensor stably
and hard reset for G-sensor to ensure it work normally.
Making EC hard reset on G-sensor againest hana-300e can not probe G-sensor.Adding
board_reset_sensors() calls to board_init() in RW,and there is no leakage from EC
to G-sensor through SPI_pins during hard reset.During hard reset, falling time of
VDD is about 13ms by catching signal,it is better to keep 'VDD off time' more than
10ms base on G-sensor's SPEC.
BRANCH=oak
BUG=b:69346100
TEST=1. measured G-sensor power up, and got the rise up time
2. press power button 10 second to power off.
3. power on the DUT
4. refresh + power button to cold reboot the DUT
5. Check the g-sensor by 'ectool motionsense'
Change-Id: I470ce7386b171f9b3b1758013016210f2701124b
Reviewed-on: https://chromium-review.googlesource.com/873590
Reviewed-by: Rong Chang <rongchang@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Xiong Huang <xiong.huang@bitland.corp-partner.google.com>
Commit-Queue: Xiong Huang <xiong.huang@bitland.corp-partner.google.com>
| -rw-r--r-- | board/elm/board.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/board/elm/board.c b/board/elm/board.c index d1c8f03d88..d4dd9545f0 100644 --- a/board/elm/board.c +++ b/board/elm/board.c @@ -286,6 +286,8 @@ static void board_init(void) /* Remap SPI2 to DMA channels 6 and 7 */ REG32(STM32_DMA1_BASE + 0xa8) |= (1 << 20) | (1 << 21) | (1 << 24) | (1 << 25); + + board_reset_sensors(); } DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT); @@ -518,7 +520,7 @@ void board_reset_sensors(void) gpio_set_level(GPIO_SENSOR_PWR_EN_L, 1); /* Min VDD off time is 10 ms, make it longer */ - msleep(20); + msleep(25); /* Power on sensors */ gpio_set_level(GPIO_SENSOR_PWR_EN_L, 0); |