diff options
| author | Ting Shen <phoenixshen@google.com> | 2022-10-27 17:07:05 +0800 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-10-28 07:46:14 +0000 |
| commit | a13ffeba8e0b5d944aa79121514b6be2f60c7bc2 (patch) | |
| tree | 397b9daa67d3e0326c3bcd27f6d5b531c2bd5bdf /driver/charger | |
| parent | 45ad08b8dfd3d0c0bd65fae07abe426c3fdebb19 (diff) | |
| download | chrome-ec-a13ffeba8e0b5d944aa79121514b6be2f60c7bc2.tar.gz | |
rt9490: disable the force B-FET on experimental feature
See b:254186078.
This is a workaround that applies to all devices, so it's implemented in
the common driver code.
BUG=b:254186078, b:253568743
TEST=`i2c read_byte I2C_PWR_CBI 0x53 0x6f` returns 0x5e (bit5=0)
on tentacruel
BRANCH=corsola
Signed-off-by: Ting Shen <phoenixshen@google.com>
Change-Id: I6c2864423a5bb04fefdc261f20209f44dce8053e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3985083
Reviewed-by: Eric Yilun Lin <yllin@google.com>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
Code-Coverage: Zoss <zoss-cl-coverage@prod.google.com>
Tested-by: Ting Shen <phoenixshen@chromium.org>
Diffstat (limited to 'driver/charger')
| -rw-r--r-- | driver/charger/rt9490.c | 21 | ||||
| -rw-r--r-- | driver/charger/rt9490.h | 8 |
2 files changed, 29 insertions, 0 deletions
diff --git a/driver/charger/rt9490.c b/driver/charger/rt9490.c index 0f198c6b76..8bf418a065 100644 --- a/driver/charger/rt9490.c +++ b/driver/charger/rt9490.c @@ -353,6 +353,27 @@ static int rt9490_init_setting(int chgnum) RETURN_ERROR(rt9490_set_bit(chgnum, RT9490_REG_CHG_CTRL2, RT9490_DIS_EOC_FCCM)); + /* b/253568743#comment14 vsys workaround */ + RETURN_ERROR(rt9490_enable_hidden_mode(chgnum, true)); + rt9490_clr_bit(chgnum, RT9490_REG_HD_ADD_CTRL2, + RT9490_EN_FON_PP_BAT_TRACK); + RETURN_ERROR(rt9490_enable_hidden_mode(chgnum, false)); + + return EC_SUCCESS; +} + +int rt9490_enable_hidden_mode(int chgnum, bool en) +{ + if (en) { + RETURN_ERROR( + rt9490_write8(chgnum, RT9490_REG_TM_PAS_CODE1, 0x69)); + RETURN_ERROR( + rt9490_write8(chgnum, RT9490_REG_TM_PAS_CODE2, 0x96)); + } else { + RETURN_ERROR(rt9490_write8(chgnum, RT9490_REG_TM_PAS_CODE1, 0)); + RETURN_ERROR(rt9490_write8(chgnum, RT9490_REG_TM_PAS_CODE2, 0)); + } + return EC_SUCCESS; } diff --git a/driver/charger/rt9490.h b/driver/charger/rt9490.h index 18e1d393b3..ea1d6cfcfb 100644 --- a/driver/charger/rt9490.h +++ b/driver/charger/rt9490.h @@ -76,6 +76,9 @@ #define RT9490_REG_ADD_CTRL2 0x4C #define RT9490_REG_ADD_IRQ_FLAG 0x4D #define RT9490_REG_ADD_IRQ_MASK6 0x4E +#define RT9490_REG_HD_ADD_CTRL2 0x6F +#define RT9490_REG_TM_PAS_CODE1 0xF1 +#define RT9490_REG_TM_PAS_CODE2 0xF2 struct rt9490_init_setting { int eoc_current; @@ -245,6 +248,9 @@ struct rt9490_init_setting { /* ADD CTRL1 */ #define RT9490_PWM_1MHZ_EN BIT(4) +/* HD_ADD_CTRL 2 */ +#define RT9490_EN_FON_PP_BAT_TRACK BIT(5) + extern const struct charger_drv rt9490_drv; extern const struct bc12_drv rt9490_bc12_drv; @@ -254,6 +260,8 @@ int rt9490_enable_adc(int chgnum, bool en); /* enable pwm frequency 1MHz mode */ int rt9490_enable_pwm_1mhz(int chgnum, bool en); +int rt9490_enable_hidden_mode(int chgnum, bool en); + #endif /* __CROS_EC_RT9490_H */ /* |