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- GPIO controlled regulators
- Required properties:
- - compatible : Must be "regulator-gpio".
- - states : Selection of available voltages and GPIO configs.
- if there are no states, then use a fixed regulator
- Optional properties:
- - enable-gpio : GPIO to use to enable/disable the regulator.
- - gpios : GPIO group used to control voltage.
- - startup-delay-us : Startup time in microseconds.
- - enable-active-high : Polarity of GPIO is active high (default is low).
- Any property defined as part of the core regulator binding defined in
- regulator.txt can also be used.
- Example:
- mmciv: gpio-regulator {
- compatible = "regulator-gpio";
- regulator-name = "mmci-gpio-supply";
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <2600000>;
- regulator-boot-on;
- enable-gpio = <&gpio0 23 0x4>;
- gpios = <&gpio0 24 0x4
- &gpio0 25 0x4>;
- states = <1800000 0x3
- 2200000 0x2
- 2600000 0x1
- 2900000 0x0>;
- startup-delay-us = <100000>;
- enable-active-high;
- };
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