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drivers: regulator: pca9420: Add support for configuring ASYS UVLO

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Add support for configuring ASYS UVLO (under voltage lock out) threshold

Signed-off-by: Dennis Grijalva <dennisgrijalva@meta.com>
This commit is contained in:
Dennis Grijalva 2023-10-16 16:31:39 -07:00 committed by Carles Cufí
parent c613e23b4a
commit 2516aa8b0b
2 changed files with 32 additions and 1 deletions
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21
drivers/regulator/regulator_pca9420.c
View file

@ -18,6 +18,8 @@
/** General purpose registers */
/** @brief Top level system ctrl 0 */
#define PCA9420_TOP_CNTL0 0x09U
/** @brief Top level system ctrl 2 */
#define PCA9420_TOP_CNTL2 0x0BU
/** @brief Top level system ctrl 3 */
#define PCA9420_TOP_CNTL3 0x0CU
@ -36,6 +38,10 @@
#define PCA9420_TOP_CNTL0_VIN_ILIM_SEL_MASK 0xE0U
#define PCA9420_TOP_CNTL0_VIN_ILIM_SEL_DISABLED 0x7U
/** @brief ASYS UVLO threshold selection */
#define PCA9420_TOP_CNTL2_ASYS_UVLO_SEL_POS 6U
#define PCA9420_TOP_CNTL2_ASYS_UVLO_SEL_MASK 0xC0U
/** @brief I2C Mode control mask */
#define PCA9420_TOP_CNTL3_MODE_I2C_POS 3U
#define PCA9420_TOP_CNTL3_MODE_I2C_MASK 0x18U
@ -102,6 +108,7 @@ struct regulator_pca9420_common_config {
struct i2c_dt_spec i2c;
int32_t vin_ilim_ua;
bool enable_modesel_pins;
uint8_t asys_uvlo_sel_mv;
};
struct regulator_pca9420_common_data {
@ -427,10 +434,20 @@ static int regulator_pca9420_common_init(const struct device *dev)
PCA9420_VIN_ILIM_UA_LSB;
}
return i2c_reg_update_byte_dt(
ret = i2c_reg_update_byte_dt(
&config->i2c, PCA9420_TOP_CNTL0,
PCA9420_TOP_CNTL0_VIN_ILIM_SEL_MASK,
reg_val << PCA9420_TOP_CNTL0_VIN_ILIM_SEL_POS);
if (ret != 0) {
return ret;
}
/* configure ASYS UVLO threshold */
return i2c_reg_update_byte_dt(&config->i2c, PCA9420_TOP_CNTL2,
PCA9420_TOP_CNTL2_ASYS_UVLO_SEL_MASK,
config->asys_uvlo_sel_mv <<
PCA9420_TOP_CNTL2_ASYS_UVLO_SEL_POS);
}
#define REGULATOR_PCA9420_DEFINE(node_id, id, name, _parent) \
@ -465,6 +482,8 @@ static int regulator_pca9420_common_init(const struct device *dev)
.vin_ilim_ua = DT_INST_PROP(inst, nxp_vin_ilim_microamp), \
.enable_modesel_pins = \
DT_INST_PROP(inst, nxp_enable_modesel_pins), \
.asys_uvlo_sel_mv = \
DT_INST_ENUM_IDX(inst, nxp_asys_uvlo_sel_millivolt), \
}; \
\
static struct regulator_pca9420_common_data data_##inst; \

12
dts/bindings/regulator/nxp,pca9420.yaml
View file

@ -63,6 +63,18 @@ properties:
To disable current limit, set property to zero. Defaults to 425mA, the IC
default value.
nxp,asys-uvlo-sel-millivolt:
type: int
default: 2700
enum:
- 2400
- 2500
- 2600
- 2700
description: |
ASYS UVLO (under voltage lock out) threshold, in millivolts. Defaults to
2700mV to match the IC default value.
child-binding:
include:
- name: regulator.yaml