+++ /dev/null
-Maxim MAX77693 multi-function device
-
-MAX77693 is a Multifunction device with the following submodules:
-- PMIC,
-- CHARGER,
-- LED,
-- MUIC,
-- HAPTIC
-
-It is interfaced to host controller using i2c.
-This document describes the bindings for the mfd device.
-
-Required properties:
-- compatible : Must be "maxim,max77693".
-- reg : Specifies the i2c slave address of PMIC block.
-- interrupts : This i2c device has an IRQ line connected to the main SoC.
-
-Optional properties:
-- regulators : The regulators of max77693 have to be instantiated under subnode
- named "regulators" using the following format.
-
- regulators {
- regulator-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER
- standard regulator constraints[*].
- };
-
- [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
-
-- haptic : The MAX77693 haptic device utilises a PWM controlled motor to provide
- users with tactile feedback. PWM period and duty-cycle are varied in
- order to provide the appropriate level of feedback.
-
- Required properties:
- - compatible : Must be "maxim,max77693-haptic"
- - haptic-supply : power supply for the haptic motor
- [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
- - pwms : phandle to the physical PWM(Pulse Width Modulation) device.
- PWM properties should be named "pwms". And number of cell is different
- for each pwm device.
- To get more information, please refer to documentation.
- [*] refer Documentation/devicetree/bindings/pwm/pwm.txt
-
-- charger : Node configuring the charger driver.
- If present, required properties:
- - compatible : Must be "maxim,max77693-charger".
-
- Optional properties (if not set, defaults will be used):
- - maxim,constant-microvolt : Battery constant voltage in uV. The charger
- will operate in fast charge constant current mode till battery voltage
- reaches this level. Then the charger will switch to fast charge constant
- voltage mode. Also vsys (system voltage) will be set to this value when
- DC power is supplied but charger is not enabled.
- Valid values: 3650000 - 4400000, step by 25000 (rounded down)
- Default: 4200000
-
- - maxim,min-system-microvolt : Minimal system voltage in uV.
- Valid values: 3000000 - 3700000, step by 100000 (rounded down)
- Default: 3600000
-
- - maxim,thermal-regulation-celsius : Temperature in Celsius for entering
- high temperature charging mode. If die temperature exceeds this value
- the charging current will be reduced by 105 mA/Celsius.
- Valid values: 70, 85, 100, 115
- Default: 100
-
- - maxim,battery-overcurrent-microamp : Overcurrent protection threshold
- in uA (current from battery to system).
- Valid values: 2000000 - 3500000, step by 250000 (rounded down)
- Default: 3500000
-
- - maxim,charge-input-threshold-microvolt : Threshold voltage in uV for
- triggering input voltage regulation loop. If input voltage decreases
- below this value, the input current will be reduced to reach the
- threshold voltage.
- Valid values: 4300000, 4700000, 4800000, 4900000
- Default: 4300000
-
-- led : the LED submodule device node
-
-There are two LED outputs available - FLED1 and FLED2. Each of them can
-control a separate LED or they can be connected together to double
-the maximum current for a single connected LED. One LED is represented
-by one child node.
-
-Required properties:
-- compatible : Must be "maxim,max77693-led".
-
-Optional properties:
-- maxim,boost-mode :
- In boost mode the device can produce up to 1.2A of total current
- on both outputs. The maximum current on each output is reduced
- to 625mA then. If not enabled explicitly, boost setting defaults to
- LEDS_BOOST_FIXED in case both current sources are used.
- Possible values:
- LEDS_BOOST_OFF (0) - no boost,
- LEDS_BOOST_ADAPTIVE (1) - adaptive mode,
- LEDS_BOOST_FIXED (2) - fixed mode.
-- maxim,boost-mvout : Output voltage of the boost module in millivolts.
- Valid values: 3300 - 5500, step by 25 (rounded down)
- Default: 3300
-- maxim,mvsys-min : Low input voltage level in millivolts. Flash is not fired
- if chip estimates that system voltage could drop below this level due
- to flash power consumption.
- Valid values: 2400 - 3400, step by 33 (rounded down)
- Default: 2400
-
-Required properties for the LED child node:
-- led-sources : see Documentation/devicetree/bindings/leds/common.txt;
- device current output identifiers: 0 - FLED1, 1 - FLED2
-- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
- Valid values for a LED connected to one FLED output:
- 15625 - 250000, step by 15625 (rounded down)
- Valid values for a LED connected to both FLED outputs:
- 15625 - 500000, step by 15625 (rounded down)
-- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
- Valid values for a single LED connected to one FLED output
- (boost mode must be turned off):
- 15625 - 1000000, step by 15625 (rounded down)
- Valid values for a single LED connected to both FLED outputs:
- 15625 - 1250000, step by 15625 (rounded down)
- Valid values for two LEDs case:
- 15625 - 625000, step by 15625 (rounded down)
-- flash-max-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
- Valid values: 62500 - 1000000, step by 62500 (rounded down)
-
-Optional properties for the LED child node:
-- label : see Documentation/devicetree/bindings/leds/common.txt
-
-Optional nodes:
-- max77693-muic :
- Node used only by extcon consumers.
- Required properties:
- - compatible : "maxim,max77693-muic"
-
-Example:
-#include <dt-bindings/leds/common.h>
-
- max77693@66 {
- compatible = "maxim,max77693";
- reg = <0x66>;
- interrupt-parent = <&gpx1>;
- interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
-
- regulators {
- esafeout@1 {
- regulator-compatible = "ESAFEOUT1";
- regulator-name = "ESAFEOUT1";
- regulator-boot-on;
- };
- esafeout@2 {
- regulator-compatible = "ESAFEOUT2";
- regulator-name = "ESAFEOUT2";
- };
- charger@0 {
- regulator-compatible = "CHARGER";
- regulator-name = "CHARGER";
- regulator-min-microamp = <60000>;
- regulator-max-microamp = <2580000>;
- regulator-boot-on;
- };
- };
-
- haptic {
- compatible = "maxim,max77693-haptic";
- haptic-supply = <&haptic_supply>;
- pwms = <&pwm 0 40000 0>;
- pwm-names = "haptic";
- };
-
- charger {
- compatible = "maxim,max77693-charger";
-
- maxim,constant-microvolt = <4200000>;
- maxim,min-system-microvolt = <3600000>;
- maxim,thermal-regulation-celsius = <75>;
- maxim,battery-overcurrent-microamp = <3000000>;
- maxim,charge-input-threshold-microvolt = <4300000>;
- };
-
- led {
- compatible = "maxim,max77693-led";
- maxim,boost-mode = <LEDS_BOOST_FIXED>;
- maxim,boost-mvout = <5000>;
- maxim,mvsys-min = <2400>;
-
- camera_flash: flash-led {
- label = "max77693-flash";
- led-sources = <0>, <1>;
- led-max-microamp = <500000>;
- flash-max-microamp = <1250000>;
- flash-max-timeout-us = <1000000>;
- };
- };
- };
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/maxim,max77693.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX77693 MicroUSB and Companion Power Management IC
+
+maintainers:
+ - Chanwoo Choi <cw00.choi@samsung.com>
+ - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+description: |
+ This is a part of device tree bindings for Maxim MAX77693 MicroUSB
+ Integrated Circuit (MUIC).
+
+ The Maxim MAX77693 is a MicroUSB and Companion Power Management IC which
+ includes voltage current regulators, charger, LED/flash, haptic motor driver
+ and MicroUSB management IC.
+
+properties:
+ compatible:
+ const: maxim,max77693
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+
+ charger:
+ $ref: /schemas/power/supply/maxim,max77693.yaml
+
+ led:
+ $ref: /schemas/leds/maxim,max77693.yaml
+
+ max77693-muic:
+ type: object
+ additionalProperties: false
+
+ properties:
+ compatible:
+ const: maxim,max77693-muic
+
+ required:
+ - compatible
+
+ motor-driver:
+ type: object
+ additionalProperties: false
+
+ properties:
+ compatible:
+ const: maxim,max77693-haptic
+
+ haptic-supply:
+ description: Power supply to the haptic motor
+
+ pwms:
+ maxItems: 1
+
+ required:
+ - compatible
+ - haptic-supply
+ - pwms
+
+ regulators:
+ $ref: ../regulator/maxim,max77693.yaml
+ description:
+ List of child nodes that specify the regulators.
+
+required:
+ - compatible
+ - interrupts
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/leds/common.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@66 {
+ compatible = "maxim,max77693";
+ reg = <0x66>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+
+ regulators {
+ ESAFEOUT1 {
+ regulator-name = "ESAFEOUT1";
+ };
+
+ ESAFEOUT2 {
+ regulator-name = "ESAFEOUT2";
+ };
+
+ CHARGER {
+ regulator-name = "CHARGER";
+ regulator-min-microamp = <60000>;
+ regulator-max-microamp = <2580000>;
+ };
+ };
+
+ motor-driver {
+ compatible = "maxim,max77693-haptic";
+ haptic-supply = <&ldo26_reg>;
+ pwms = <&pwm 0 38022 0>;
+ };
+
+ charger {
+ compatible = "maxim,max77693-charger";
+
+ maxim,constant-microvolt = <4350000>;
+ maxim,min-system-microvolt = <3600000>;
+ maxim,thermal-regulation-celsius = <100>;
+ maxim,battery-overcurrent-microamp = <3500000>;
+ maxim,charge-input-threshold-microvolt = <4300000>;
+ };
+
+ led {
+ compatible = "maxim,max77693-led";
+ maxim,boost-mode = <LEDS_BOOST_FIXED>;
+ maxim,boost-mvout = <5000>;
+ maxim,mvsys-min = <2400>;
+
+ flash-led {
+ label = "max77693-flash";
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_WHITE>;
+ led-sources = <0>, <1>;
+ led-max-microamp = <500000>;
+ flash-max-microamp = <1250000>;
+ flash-max-timeout-us = <1000000>;
+ };
+ };
+ };
+ };
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