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nxp,pca9420

Vendor: NXP Semiconductors

Description

NXP PCA9420 PMIC

The PMIC has two buck converters and two LDOs. All need to be defined as
children nodes, strictly following the BUCK1, BUCK2, LDO1 and LDO2 node names.
For example:

pmic@61 {
  reg = <0x61>;
  ...
  BUCK1 {
    /* all properties for BUCK1 */
  };
  BUCK2 {
    /* all properties for BUCK2 */
  };
  LDO1 {
    /* all properties for LDO1 */
  };
  LDO2 {
    /* all properties for LDO2 */
  };
};

Properties

Top level properties

These property descriptions apply to “nxp,pca9420” nodes themselves. This page also describes child node properties in the following sections.

Properties not inherited from the base binding file.

Name

Type

Details

nxp,enable-modesel-pins

boolean

When enabled, the PMIC will be configured to allow mode selection using the MODESEL0/1 inputs.

nxp,vin-ilim-microamp

int

VIN input current limit, in microamperes. Value reflects typical value,
below you can find min/typical/max values:

- 74 mA/85 mA/98 mA
- 222 mA/255 mA/293 mA
- 370 mA/425 mA/489 mA
- 517 mA/595 mA/684 mA
- 665 mA/765 mA/880 mA
- 813 mA/935 mA/1075 mA
- 961 mA/1105 mA/1271 mA

To disable current limit, set property to zero. Defaults to 425mA, the IC
default value.

Default value: 425000

Legal values: 85000, 255000, 425000, 595000, 765000, 935000, 1105000

Child node properties

Name

Type

Details

enable-inverted

boolean

If the enable bit should be zero to turn the regulator on, add this
property.

nxp,mode0-microvolt

int

The voltage level to be configured for mode 0, in microvolts. Setting
this value to zero will disable the source in mode 0.

nxp,mode1-microvolt

int

The voltage level to be configured for mode 1, in microvolts. Setting
this value to zero will disable the source in mode 1.

nxp,mode2-microvolt

int

The voltage level to be configured for mode 2, in microvolts. Setting
this value to zero will disable the source in mode 2.

nxp,mode3-microvolt

int

The voltage level to be configured for mode 3, in microvolts. Setting
this value to zero will disable the source in mode 3.

regulator-min-microvolt

int

smallest voltage consumers may set

regulator-max-microvolt

int

largest voltage consumers may set

regulator-always-on

boolean

boolean, regulator should never be disabled

regulator-boot-on

boolean

bootloader/firmware enabled regulator.
It's expected that this regulator was left on by the bootloader.
If the bootloader didn't leave it on then OS should turn it on
at boot but shouldn't prevent it from being turned off later.
This property is intended to only be used for regulators where
software cannot read the state of the regulator.