This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

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

nxp,asys-uvlo-sel-millivolt

int

ASYS UVLO (under voltage lock out) threshold, in millivolts. Defaults to
2700mV to match the IC default value.

Default value: 2700

Legal values: 2400, 2500, 2600, 2700

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “nxp,pca9420” compatible.

Name	Type	Details
`wakeup-source`	`boolean`	Property to identify that a device can be used as wake up source. When this property is provided a specific flag is set into the device that tells the system that the device is capable of wake up the system. Wake up capable devices are disabled (interruptions will not wake up the system) by default but they can be enabled at runtime if necessary.
`power-domain`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.
`zephyr,pm-device-runtime-auto`	`boolean`	Automatically configure the device for runtime power management after the init function runs.
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg`	`array`	register space See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts`	`array`	interrupts for device See Important properties for more information.
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) See Important properties for more information. This property is deprecated.
`clocks`	`phandle-array`	Clock gate information
`clock-names`	`string-array`	name of each clock
`#address-cells`	`int`	number of address cells in reg property
`#size-cells`	`int`	number of size cells in reg property
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`zephyr,deferred-init`	`boolean`	Do not initialize device automatically on boot. Device should be manually initialized using device_init().

Child node properties

Name	Type	Details
`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.
`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.