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 --- board/gateworks/gw_ventana/common.c | 6 ++++++ 1 file changed, 6 insertions(+)
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); } }