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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.
- interrupt-parent : The parent interrupt controller.
Optional properties:
- regulators : The regulators of max77693 have to be instantiated under subnod
named "regulators" using the following format.
regulators {
regualtor-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER
standard regulator constratints[*].
};
[*] 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 approprite level of feedback.
Required properties:
- compatible : Must be "maxim,max77693-hpatic"
- 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 informations, please refer to documentaion.
[*] refer Documentation/devicetree/bindings/pwm/pwm.txt
Example:
max77693@66 {
compatible = "maxim,max77693";
reg = <0x66>;
interrupt-parent = <&gpx1>;
interrupts = <5 2>;
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";
};
};
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