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| author | Caveh Jalali <caveh@chromium.org> | 2021-04-13 17:19:43 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-04-16 23:58:21 +0000 |
| commit | f4686eb9b5edd2a43d9dc60de676286e913d83fd (patch) | |
| tree | 73989378942e1a49badf6b3e6d336daf74361a6b /board/brya/board.h | |
| parent | 38fe2ff702427d99bb8663840f11c1b1d6420919 (diff) | |
| download | chrome-ec-f4686eb9b5edd2a43d9dc60de676286e913d83fd.tar.gz | |
brya: Tune mp2964 settings
This tunes some parameters in the MP2964 IMVP9 to improve system
stability. In this round, the only tuning we have identified is to
change the SVID alert delay time to 200ns.
The tuning is applied to the PMIC registers, then committed to the PMIC
non volatile memory. On subsequent boots (including power cycle), the
tuned values are used and no further tuning is required.
1st boot:
mp2964_on_startup: attempting to tune PMIC
mp2964: tuning reg 0x3f from 0xe001 to 0xe081
mp2964: tuning reg 0x3f from 0xe001 to 0xe081
mp2964_store_user_all: updating persistent settings
mp2964: reg 0x3f already 0xe081
mp2964: reg 0x3f already 0xe081
2nd+ boot, also after removing battery:
mp2964_on_startup: attempting to tune PMIC
mp2964: reg 0x3f already 0xe081
mp2964: reg 0x3f already 0xe081
BRANCH=none
BUG=b:185424011
TEST=unplugged battery, verified new values are persistent
Change-Id: Idcb540eed6f893586853b8fed6e84e24b4a2f9e3
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2823634
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Commit-Queue: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'board/brya/board.h')
| -rw-r--r-- | board/brya/board.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/board/brya/board.h b/board/brya/board.h index e48ed173ac..9765c93b1c 100644 --- a/board/brya/board.h +++ b/board/brya/board.h @@ -22,6 +22,8 @@ */ #define CONFIG_HIBERNATE_PSL_VCC1_RST_WAKEUP +#define CONFIG_MP2964 + /* LED */ #define CONFIG_LED_PWM #define CONFIG_LED_PWM_COUNT 2 @@ -155,9 +157,12 @@ #define I2C_PORT_BATTERY NPCX_I2C_PORT5_0 #define I2C_PORT_CHARGER NPCX_I2C_PORT7_0 #define I2C_PORT_EEPROM NPCX_I2C_PORT7_0 +#define I2C_PORT_MP2964 NPCX_I2C_PORT7_0 #define I2C_ADDR_EEPROM_FLAGS 0x50 +#define I2C_ADDR_MP2964_FLAGS 0x20 + /* * see b/174768555#comment22 */ |