xref: /linux/Documentation/devicetree/bindings/mfd/nxp,pf1550.yaml (revision 84318277d6334c6981ab326d4acc87c6a6ddc9b8)

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/nxp,pf1550.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP PF1550 Power Management IC

maintainers:
  - Samuel Kayode <samuel.kayode@savoirfairelinux.com>

description:
  PF1550 PMIC provides battery charging and power supply for low power IoT and
  wearable applications. This device consists of an i2c controlled MFD that
  includes regulators, battery charging and an onkey/power button.

$ref: /schemas/power/supply/power-supply.yaml

properties:
  compatible:
    const: nxp,pf1550

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  wakeup-source: true

  regulators:
    type: object
    additionalProperties: false

    patternProperties:
      "^(ldo[1-3]|sw[1-3]|vrefddr)$":
        type: object
        $ref: /schemas/regulator/regulator.yaml
        description:
          regulator configuration for ldo1-3, buck converters(sw1-3)
          and DDR termination reference voltage (vrefddr)
        unevaluatedProperties: false

  monitored-battery:
    description: |
      A phandle to a monitored battery node that contains a valid value
      for:
      constant-charge-voltage-max-microvolt.

  nxp,thermal-regulation-celsius:
    description:
      Temperature threshold for thermal regulation of charger in celsius.
    enum: [ 80, 95, 110, 125 ]

  nxp,min-system-microvolt:
    description:
      System specific lower limit voltage.
    enum: [ 3500000, 3700000, 4300000 ]

  nxp,disable-key-power:
    type: boolean
    description:
      Disable power-down using a long key-press. The onkey driver will remove
      support for the KEY_POWER key press when triggered using a long press of
      the onkey.

required:
  - compatible
  - reg
  - interrupts

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/input/linux-event-codes.h>

    battery: battery-cell {
        compatible = "simple-battery";
        constant-charge-voltage-max-microvolt = <4400000>;
    };

    i2c {
        #address-cells = <1>;
        #size-cells = <0>;

        pmic@8 {
            compatible = "nxp,pf1550";
            reg = <0x8>;

            interrupt-parent = <&gpio1>;
            interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
            wakeup-source;
            monitored-battery = <&battery>;
            nxp,min-system-microvolt = <4300000>;
            nxp,thermal-regulation-celsius = <80>;

            regulators {
                sw1_reg: sw1 {
                    regulator-name = "sw1";
                    regulator-min-microvolt = <600000>;
                    regulator-max-microvolt = <1387500>;
                    regulator-always-on;
                    regulator-ramp-delay = <6250>;

                    regulator-state-mem {
                        regulator-on-in-suspend;
                        regulator-suspend-min-microvolt = <1270000>;
                    };
                };

                sw2_reg: sw2 {
                    regulator-name = "sw2";
                    regulator-min-microvolt = <600000>;
                    regulator-max-microvolt = <1387500>;
                    regulator-always-on;

                    regulator-state-mem {
                        regulator-on-in-suspend;
                    };
                };

                sw3_reg: sw3 {
                    regulator-name = "sw3";
                    regulator-min-microvolt = <1800000>;
                    regulator-max-microvolt = <3300000>;
                    regulator-always-on;

                    regulator-state-mem {
                        regulator-on-in-suspend;
                    };
                };

                vldo1_reg: ldo1 {
                    regulator-name = "ldo1";
                    regulator-min-microvolt = <750000>;
                    regulator-max-microvolt = <3300000>;
                    regulator-always-on;

                    regulator-state-mem {
                        regulator-off-in-suspend;
                    };
                };

                vldo2_reg: ldo2 {
                    regulator-name = "ldo2";
                    regulator-min-microvolt = <1800000>;
                    regulator-max-microvolt = <3300000>;
                    regulator-always-on;
                };

                vldo3_reg: ldo3 {
                    regulator-name = "ldo3";
                    regulator-min-microvolt = <750000>;
                    regulator-max-microvolt = <3300000>;
                    regulator-always-on;
                };
            };
        };
    };