diff options
| author | Caveh Jalali <caveh@chromium.org> | 2018-06-11 17:35:50 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-06-19 03:48:53 -0700 |
| commit | e06db69a273d4fc220ea3707c2286d1f626424ef (patch) | |
| tree | a438c538046c329501c90cd41f6e4c0dd2550215 | |
| parent | a201157d9cc06d4d9245c175850da2ff56d0e402 (diff) | |
| download | chrome-ec-e06db69a273d4fc220ea3707c2286d1f626424ef.tar.gz | |
atlas: power down system at PMIC on hibernate
this turns off most of the power rails at the PMIC in response to a
system hibernate request.
BUG=b:110237370
BRANCH=none
TEST=verified both the AP and EC power down
Change-Id: Ica830e15dfd2f80a3392afe29a079faa5e4d6ec9
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1096485
Commit-Ready: Caveh Jalali <caveh@google.com>
Tested-by: Caveh Jalali <caveh@google.com>
Reviewed-by: Caveh Jalali <caveh@google.com>
| -rw-r--r-- | board/atlas/board.c | 27 | ||||
| -rw-r--r-- | board/atlas/board.h | 1 |
2 files changed, 27 insertions, 1 deletions
diff --git a/board/atlas/board.c b/board/atlas/board.c index 2ffd4540c7..0d122f022e 100644 --- a/board/atlas/board.c +++ b/board/atlas/board.c @@ -15,10 +15,10 @@ #include "console.h" #include "driver/accelgyro_bmi160.h" #include "driver/als_opt3001.h" +#include "driver/pmic_bd99992gw.h" #include "driver/tcpm/ps8xxx.h" #include "driver/tcpm/tcpci.h" #include "driver/tcpm/tcpm.h" -#include "driver/temp_sensor/bd99992gw.h" #include "espi.h" #include "extpower.h" #include "gpio.h" @@ -36,6 +36,7 @@ #include "spi.h" #include "switch.h" #include "system.h" +#include "system_chip.h" #include "task.h" #include "temp_sensor.h" #include "timer.h" @@ -406,6 +407,30 @@ static void board_pmic_init(void) } DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_DEFAULT); +void board_hibernate(void) +{ + int p; + + /* Configure PSL pins */ + for (p = 0; p < hibernate_wake_pins_used; p++) + system_config_psl_mode(hibernate_wake_pins[p]); + + /* + * Enter PSL mode. Note that on Atlas, simply enabling PSL mode does + * not cut the EC's power. Therefore, we'll need to cut off power via + * the ROP PMIC afterwards. + */ + system_enter_psl_mode(); + + /* Cut off DSW power via the ROP PMIC. */ + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, + BD99992GW_REG_SDWNCTRL, BD99992GW_SDWNCTRL_SWDN); + + /* Wait for power to be cut. */ + while (1) + ; +} + /* Initialize board. */ static void board_init(void) { diff --git a/board/atlas/board.h b/board/atlas/board.h index 33bf5b5bc2..13782dfb49 100644 --- a/board/atlas/board.h +++ b/board/atlas/board.h @@ -148,6 +148,7 @@ #define NPCX_JTAG_MODULE2 0 /* 0:GPIO21/17/16/20 as JTAG */ #define NPCX_TACH_SEL2 0 /* 0:GPIO40/73 1:GPIO93/A6 as TACH */ #define NPCX7_PWM1_SEL 1 /* GPIO C2 is used as PWM1. */ +#define CONFIG_HIBERNATE_PSL /* Enable PSL pins for wakeup */ /* I2C ports */ #define I2C_PORT_POWER NPCX_I2C_PORT0_0 /* pmic/charger */ |