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| author | Tim Harvey <tharvey@gateworks.com> | 2021-06-11 12:46:24 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2021-07-10 16:53:33 +0200 |
| commit | 0545b17b695e03ad5ea7bd9736b9cdfc49530af5 (patch) | |
| tree | 8e2ad24f80baae651a1e198978ca75d92611a8a7 /board/gateworks | |
| parent | 722d22813e1b79231451059a823d777e2c0867e7 (diff) | |
| download | u-boot-0545b17b695e03ad5ea7bd9736b9cdfc49530af5.tar.gz u-boot-0545b17b695e03ad5ea7bd9736b9cdfc49530af5.tar.bz2 u-boot-0545b17b695e03ad5ea7bd9736b9cdfc49530af5.zip | |
imx: ventana: put LTC3676 regulators in continuous mode
In the default pulse-skipping mode regulators that are very lightly
loaded can fail to regulate properly. Switching them to always use
continuous mode causes only around 10mW of overall system power
difference in a lightly loaded system that isn't already operating
them in continuous mode.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'board/gateworks')
| -rw-r--r-- | board/gateworks/gw_ventana/common.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c index b5a0162c5e..adbc6791b3 100644 --- a/board/gateworks/gw_ventana/common.c +++ b/board/gateworks/gw_ventana/common.c @@ -1688,6 +1688,12 @@ void setup_pmic(void) /* set SW3 (VDD_ARM) */ pmic_reg_write(p, LTC3676_DVB3A, 0x1f); } + + /* put all switchers in continuous mode */ + pmic_reg_write(p, LTC3676_BUCK1, 0xc0); + pmic_reg_write(p, LTC3676_BUCK2, 0xc0); + pmic_reg_write(p, LTC3676_BUCK3, 0xc0); + pmic_reg_write(p, LTC3676_BUCK4, 0xc0); } } |