mirror of https://gitee.com/openkylin/linux.git
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
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.
|
|
- gpios-states : gpios pin's initial states array. 0: LOW, 1: HIGH.
|
|
defualt is LOW if nothing is specified.
|
|
- startup-delay-us : Startup time in microseconds.
|
|
- enable-active-high : Polarity of GPIO is active high (default is low).
|
|
- regulator-type : Specifies what is being regulated, must be either
|
|
"voltage" or "current", defaults to voltage.
|
|
|
|
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;
|
|
};
|