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dt-bindings: mfd: Add binding for the PF1550 PMIC
Add a DT binding document for pf1550 PMIC. This describes the core MFD
device along with its children: regulators, charger and onkey.
Signed-off-by: Samuel Kayode <samuel.kayode@savoirfairelinux.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://patch.msgid.link/20251001-pf1550-v12-1-a3302aa41687@savoirfairelinux.com
Signed-off-by: Lee Jones <lee@kernel.org>
authored by
Samuel Kayode
and committed by
Lee Jones
2391e137
3a866087
+161
+161
Documentation/devicetree/bindings/mfd/nxp,pf1550.yaml
+161
Documentation/devicetree/bindings/mfd/nxp,pf1550.yaml
···
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mfd/nxp,pf1550.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP PF1550 Power Management IC
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maintainers:
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- Samuel Kayode <samuel.kayode@savoirfairelinux.com>
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description:
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PF1550 PMIC provides battery charging and power supply for low power IoT and
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wearable applications. This device consists of an i2c controlled MFD that
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includes regulators, battery charging and an onkey/power button.
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$ref: /schemas/power/supply/power-supply.yaml
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properties:
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compatible:
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const: nxp,pf1550
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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wakeup-source: true
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regulators:
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type: object
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additionalProperties: false
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patternProperties:
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"^(ldo[1-3]|sw[1-3]|vrefddr)$":
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type: object
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$ref: /schemas/regulator/regulator.yaml
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description:
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regulator configuration for ldo1-3, buck converters(sw1-3)
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and DDR termination reference voltage (vrefddr)
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unevaluatedProperties: false
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monitored-battery:
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description: |
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A phandle to a monitored battery node that contains a valid value
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for:
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constant-charge-voltage-max-microvolt.
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nxp,thermal-regulation-celsius:
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description:
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Temperature threshold for thermal regulation of charger in celsius.
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enum: [ 80, 95, 110, 125 ]
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nxp,min-system-microvolt:
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description:
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System specific lower limit voltage.
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enum: [ 3500000, 3700000, 4300000 ]
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nxp,disable-key-power:
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type: boolean
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description:
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Disable power-down using a long key-press. The onkey driver will remove
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support for the KEY_POWER key press when triggered using a long press of
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the onkey.
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required:
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- compatible
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- reg
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- interrupts
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/input/linux-event-codes.h>
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battery: battery-cell {
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compatible = "simple-battery";
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constant-charge-voltage-max-microvolt = <4400000>;
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};
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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pmic@8 {
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compatible = "nxp,pf1550";
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reg = <0x8>;
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interrupt-parent = <&gpio1>;
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interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
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wakeup-source;
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monitored-battery = <&battery>;
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nxp,min-system-microvolt = <4300000>;
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nxp,thermal-regulation-celsius = <80>;
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regulators {
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sw1_reg: sw1 {
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regulator-name = "sw1";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1387500>;
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regulator-always-on;
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regulator-ramp-delay = <6250>;
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regulator-state-mem {
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regulator-on-in-suspend;
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regulator-suspend-min-microvolt = <1270000>;
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};
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};
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sw2_reg: sw2 {
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regulator-name = "sw2";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1387500>;
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regulator-always-on;
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regulator-state-mem {
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regulator-on-in-suspend;
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};
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};
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sw3_reg: sw3 {
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regulator-name = "sw3";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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regulator-state-mem {
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regulator-on-in-suspend;
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};
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};
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vldo1_reg: ldo1 {
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regulator-name = "ldo1";
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regulator-min-microvolt = <750000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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regulator-state-mem {
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regulator-off-in-suspend;
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};
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};
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vldo2_reg: ldo2 {
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regulator-name = "ldo2";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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vldo3_reg: ldo3 {
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regulator-name = "ldo3";
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regulator-min-microvolt = <750000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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};
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};
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};