From 722d22813e1b79231451059a823d777e2c0867e7 Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Fri, 11 Jun 2021 12:46:23 -0700 Subject: [PATCH] imx: ventana: put PFUZ100 regulators in continuous mode In the default 'auto' mode regulators that are very lightly loaded can be put in PFM mode and fail to regulator properly. Switching them to always use continuous PWM mode has a neglibable affect on system power and garuntees proper regulation under lightly loaded circumstances. Signed-off-by: Tim Harvey --- board/gateworks/gw_ventana/common.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c index 9f5f20f781..b5a0162c5e 100644 --- a/board/gateworks/gw_ventana/common.c +++ b/board/gateworks/gw_ventana/common.c @@ -1596,6 +1596,32 @@ void setup_pmic(void) pmic_reg_write(p, PFUZE100_VGEN6VOL, reg); } } + + /* put all switchers in continuous mode */ + pmic_reg_read(p, PFUZE100_SW1ABMODE, ®); + reg &= ~(SW_MODE_MASK); + reg |= PWM_PWM; + pmic_reg_write(p, PFUZE100_SW1ABMODE, reg); + + pmic_reg_read(p, PFUZE100_SW2MODE, ®); + reg &= ~(SW_MODE_MASK); + reg |= PWM_PWM; + pmic_reg_write(p, PFUZE100_SW2MODE, reg); + + pmic_reg_read(p, PFUZE100_SW3AMODE, ®); + reg &= ~(SW_MODE_MASK); + reg |= PWM_PWM; + pmic_reg_write(p, PFUZE100_SW3AMODE, reg); + + pmic_reg_read(p, PFUZE100_SW3BMODE, ®); + reg &= ~(SW_MODE_MASK); + reg |= PWM_PWM; + pmic_reg_write(p, PFUZE100_SW3BMODE, reg); + + pmic_reg_read(p, PFUZE100_SW4MODE, ®); + reg &= ~(SW_MODE_MASK); + reg |= PWM_PWM; + pmic_reg_write(p, PFUZE100_SW4MODE, reg); } /* configure LTC3676 PMIC */ -- 2.39.5