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imx: ventana: put PFUZ100 regulators in continuous mode

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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 <tharvey@gateworks.com>
This commit is contained in:
Tim Harvey
2021-06-11 12:46:23 -07:00
committed by Stefano Babic
parent a32be88da0
commit 722d22813e
1 changed files with 26 additions and 0 deletions
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26
board/gateworks/gw_ventana/common.c
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@@ -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);
reg &= ~(SW_MODE_MASK);
reg |= PWM_PWM;
pmic_reg_write(p, PFUZE100_SW1ABMODE, reg);
pmic_reg_read(p, PFUZE100_SW2MODE, &reg);
reg &= ~(SW_MODE_MASK);
reg |= PWM_PWM;
pmic_reg_write(p, PFUZE100_SW2MODE, reg);
pmic_reg_read(p, PFUZE100_SW3AMODE, &reg);
reg &= ~(SW_MODE_MASK);
reg |= PWM_PWM;
pmic_reg_write(p, PFUZE100_SW3AMODE, reg);
pmic_reg_read(p, PFUZE100_SW3BMODE, &reg);
reg &= ~(SW_MODE_MASK);
reg |= PWM_PWM;
pmic_reg_write(p, PFUZE100_SW3BMODE, reg);
pmic_reg_read(p, PFUZE100_SW4MODE, &reg);
reg &= ~(SW_MODE_MASK);
reg |= PWM_PWM;
pmic_reg_write(p, PFUZE100_SW4MODE, reg);
}
/* configure LTC3676 PMIC */