77 lines
2.2 KiB
Plaintext
77 lines
2.2 KiB
Plaintext
Maxim MAX77693 multi-function device
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MAX77693 is a Multifunction device with the following submodules:
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- PMIC,
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- CHARGER,
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- LED,
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- MUIC,
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- HAPTIC
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It is interfaced to host controller using i2c.
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This document describes the bindings for the mfd device.
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Required properties:
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- compatible : Must be "maxim,max77693".
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- reg : Specifies the i2c slave address of PMIC block.
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- interrupts : This i2c device has an IRQ line connected to the main SoC.
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- interrupt-parent : The parent interrupt controller.
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Optional properties:
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- regulators : The regulators of max77693 have to be instantiated under subnod
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named "regulators" using the following format.
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regulators {
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regualtor-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER
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standard regulator constratints[*].
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};
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[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
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- haptic : The MAX77693 haptic device utilises a PWM controlled motor to provide
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users with tactile feedback. PWM period and duty-cycle are varied in
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order to provide the approprite level of feedback.
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Required properties:
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- compatible : Must be "maxim,max77693-hpatic"
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- haptic-supply : power supply for the haptic motor
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[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
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- pwms : phandle to the physical PWM(Pulse Width Modulation) device.
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PWM properties should be named "pwms". And number of cell is different
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for each pwm device.
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To get more informations, please refer to documentaion.
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[*] refer Documentation/devicetree/bindings/pwm/pwm.txt
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Example:
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max77693@66 {
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compatible = "maxim,max77693";
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reg = <0x66>;
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interrupt-parent = <&gpx1>;
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interrupts = <5 2>;
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regulators {
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esafeout@1 {
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regulator-compatible = "ESAFEOUT1";
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regulator-name = "ESAFEOUT1";
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regulator-boot-on;
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};
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esafeout@2 {
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regulator-compatible = "ESAFEOUT2";
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regulator-name = "ESAFEOUT2";
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};
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charger@0 {
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regulator-compatible = "CHARGER";
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regulator-name = "CHARGER";
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regulator-min-microamp = <60000>;
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regulator-max-microamp = <2580000>;
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regulator-boot-on;
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};
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};
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haptic {
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compatible = "maxim,max77693-haptic";
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haptic-supply = <&haptic_supply>;
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pwms = <&pwm 0 40000 0>;
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pwm-names = "haptic";
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};
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};
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