1Fixed Voltage regulators 2 3Required properties: 4- compatible: Must be "regulator-fixed"; 5 6Optional properties: 7- gpio: gpio to use for enable control 8- startup-delay-us: startup time in microseconds 9- enable-active-high: Polarity of GPIO is Active high 10If this property is missing, the default assumed is Active low. 11- gpio-open-drain: GPIO is open drain type. 12 If this property is missing then default assumption is false. 13-vin-supply: Input supply name. 14 15Any property defined as part of the core regulator 16binding, defined in regulator.txt, can also be used. 17However a fixed voltage regulator is expected to have the 18regulator-min-microvolt and regulator-max-microvolt 19to be the same. 20 21Example: 22 23 abc: fixedregulator@0 { 24 compatible = "regulator-fixed"; 25 regulator-name = "fixed-supply"; 26 regulator-min-microvolt = <1800000>; 27 regulator-max-microvolt = <1800000>; 28 gpio = <&gpio1 16 0>; 29 startup-delay-us = <70000>; 30 enable-active-high; 31 regulator-boot-on; 32 gpio-open-drain; 33 vin-supply = <&parent_reg>; 34 }; 35