diff options
| author | Sue Chen <sue.chen@quanta.corp-partner.google.com> | 2019-03-18 14:47:35 +0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2019-03-22 00:42:54 +0000 |
| commit | 4d510cbb5c27314b11bb92c4e9af361501605ad7 (patch) | |
| tree | 3a5ad835555f9f5a98dadfe2eb65b9231f2203e3 | |
| parent | dd536ce36906882f9cbca043a2cd46cf29517169 (diff) | |
| download | chrome-ec-4d510cbb5c27314b11bb92c4e9af361501605ad7.tar.gz | |
Fizz: Teemo PMIC TPS650830 VR1 setting for hang up issue
Set PMIC register V100ACNT (0x37) to 0x1B
[1:0] : 11b Forced PWM Operation.
[5:4] : 01b Output Voltage Selet Vnom (1V)
To improve +V1P00A ripple around 18mV.
BUG=b:128960577
BRANCH=firmware-fizz-10139.B
TEST=make buildall -j
Signed-off-by: Sue Chen <sue.chen@quanta.corp-partner.google.com>
Change-Id: I1e620a6c2eebcf2dec8c66989f1469072621ba92
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1529983
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
| -rw-r--r-- | board/fizz/board.c | 11 | ||||
| -rw-r--r-- | driver/pmic_tps650x30.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/board/fizz/board.c b/board/fizz/board.c index 4ed3b479b5..f9c11a9280 100644 --- a/board/fizz/board.c +++ b/board/fizz/board.c @@ -441,6 +441,17 @@ static void board_pmic_init(void) if (err) goto pmic_error; + if (oem == OEM_TEEMO) { + /* + * V100ACNT Register Field Description. Default: 0x2A + * [1:0] : 11b Forced PWM Operation. + * [5:4] : 01b Output Voltage Select Vnom (1V) + */ + err = I2C_PMIC_WRITE(TPS650X30_REG_V100ACNT, 0x1B); + if (err) + goto pmic_error; + } + CPRINTS("PMIC init done"); pmic_initialized = 1; return; diff --git a/driver/pmic_tps650x30.h b/driver/pmic_tps650x30.h index 5198686800..861f1d8d14 100644 --- a/driver/pmic_tps650x30.h +++ b/driver/pmic_tps650x30.h @@ -22,6 +22,7 @@ #define TPS650X30_REG_V33ADSWCNT 0x32 #define TPS650X30_REG_V18ACNT 0x34 #define TPS650X30_REG_V1P2UCNT 0x36 +#define TPS650X30_REG_V100ACNT 0x37 #define TPS650X30_REG_VRMODECTRL 0x3B #define TPS650X30_REG_DISCHCNT1 0x3C #define TPS650X30_REG_DISCHCNT2 0x3D |