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drivers: regulator: npm1300: Add PFM mode

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Set regulator mode updated to support forced PFM mode

Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
This commit is contained in:
Andy Sinclair 2023-08-24 10:14:39 +01:00 • committed by Carles Cufí
commit 49ef9be4b9
2 changed files with 22 additions and 4 deletions
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25
drivers/regulator/regulator_npm1300.c
View file

@ -265,17 +265,34 @@ int regulator_npm1300_get_voltage(const struct device *dev, int32_t *volt_uv)
static int set_buck_mode(const struct device *dev, uint8_t chan, regulator_mode_t mode)
{
const struct regulator_npm1300_config *config = dev->config;
uint8_t pfm_mask = BIT(chan);
uint8_t pfm_data;
uint8_t pwm_reg;
int ret;
switch (mode) {
case NPM1300_BUCK_MODE_PWM:
return mfd_npm1300_reg_write(config->mfd, BUCK_BASE,
BUCK_OFFSET_PWM_SET + (chan * 2U), 1U);
pfm_data = 0U;
pwm_reg = BUCK_OFFSET_PWM_SET;
break;
case NPM1300_BUCK_MODE_AUTO:
return mfd_npm1300_reg_write(config->mfd, BUCK_BASE,
BUCK_OFFSET_PWM_CLR + (chan * 2U), 1U);
pfm_data = 0U;
pwm_reg = BUCK_OFFSET_PWM_CLR;
break;
case NPM1300_BUCK_MODE_PFM:
pfm_data = pfm_mask;
pwm_reg = BUCK_OFFSET_PWM_CLR;
break;
default:
return -ENOTSUP;
}
ret = mfd_npm1300_reg_update(config->mfd, BUCK_BASE, BUCK_OFFSET_CTRL0, pfm_data, pfm_mask);
if (ret < 0) {
return ret;
}
return mfd_npm1300_reg_write(config->mfd, BUCK_BASE, pwm_reg + (chan * 2U), 1U);
}
static int set_ldsw_mode(const struct device *dev, uint8_t chan, regulator_mode_t mode)

1
include/zephyr/dt-bindings/regulator/npm1300.h
View file

@ -20,6 +20,7 @@
/* Buck modes */
#define NPM1300_BUCK_MODE_AUTO 0x00U
#define NPM1300_BUCK_MODE_PWM 0x01U
#define NPM1300_BUCK_MODE_PFM 0x04U
/* LDSW / LDO modes */
#define NPM1300_LDSW_MODE_LDO 0x02U