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| author | wen zhang <zhangwen6@huaqin.corp-partner.google.com> | 2021-08-19 10:17:36 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-08-19 08:10:13 +0000 |
| commit | 32760f9286fd28d0062b08de0d97e7ee61957da4 (patch) | |
| tree | fcc16fa4364d2c521b7c0fcb5ed6bafa65ec71eb /board/fennel | |
| parent | 493627b22c604a0b37f43ba027d1c480beb8d404 (diff) | |
| download | chrome-ec-32760f9286fd28d0062b08de0d97e7ee61957da4.tar.gz | |
Fennel: pull sensor SPI_NSS to low in S5
There is a leakage after changing the BMI160 to ICM42607
We should pull the sensor SPI_NSS to low in S5 to prevent a leakage
BUG=b:196943908
BRANCH=kukui
TEST=1.make BOARD=fennel.
2.the power consumption of ICM42607 in S5 is good.
3.the power consumption of BMI160 is still good after the change.
Change-Id: I52b6a0da2087766c107b53b46bf4e685870a5f9b
Signed-off-by: wen zhang <zhangwen6@huaqin.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3105906
Reviewed-by: Shou-Chieh Hsu <shouchieh@chromium.org>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Diffstat (limited to 'board/fennel')
| -rw-r--r-- | board/fennel/board.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/board/fennel/board.c b/board/fennel/board.c index 32decaac0c..b9d8e5c889 100644 --- a/board/fennel/board.c +++ b/board/fennel/board.c @@ -289,6 +289,9 @@ static void board_spi_disable(void) /* Set pins to a state calming the sensor down. */ gpio_set_flags(GPIO_EC_SENSOR_SPI_CK, GPIO_OUT_LOW); gpio_set_level(GPIO_EC_SENSOR_SPI_CK, 0); + /* Pull SPI_NSS pin to low to prevent a leakage. */ + gpio_set_flags(GPIO_EC_SENSOR_SPI_NSS, GPIO_OUT_LOW); + gpio_set_level(GPIO_EC_SENSOR_SPI_NSS, 0); gpio_config_module(MODULE_SPI_CONTROLLER, 0); /* Disable spi peripheral and clocks. */ |