Fixed Voltage regulator
Binding:
The binding is done by the property "compatible" - this is different, than for
binding by the node prefix (doc/device-tree-bindings/regulator/regulator.txt).
Required properties:
- compatible: "regulator-fixed"
- regulator-name: this is required by the regulator uclass
Optional properties:
- gpio: GPIO to use for enable control
- startup-delay-us: startup time in microseconds
- u-boot,off-on-delay-us: off delay time in microseconds
- regulator constraints (binding info: regulator.txt)
- enable-active-high: Polarity of GPIO is Active high. If this property
is missing, the default assumed is Active low.
Other kernel-style properties, are currently not used.
Note:
For the regulator constraints, driver expects that:
- regulator-min-microvolt is equal to regulator-max-microvolt
- regulator-min-microamp is equal to regulator-max-microamp
Example:
fixed_regulator@0 {
/* Mandatory */
compatible = "regulator-fixed";
regulator-name = "LED_3.3V";
/* Optional: */
gpio = <&gpc1 0 GPIO_ACTIVE_LOW>;
/* Optional for regulator uclass */
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-min-microamp = <15000>;
regulator-max-microamp = <15000>;
regulator-always-on;
regulator-boot-on;
enable-active-high;
};