1Fixed Voltage regulators 2 3Required properties: 4- compatible: Must be "regulator-fixed"; 5- regulator-name: Defined in regulator.txt as optional, but required here. 6 7Optional properties: 8- gpio: gpio to use for enable control 9- startup-delay-us: startup time in microseconds 10- enable-active-high: Polarity of GPIO is Active high 11If this property is missing, the default assumed is Active low. 12- gpio-open-drain: GPIO is open drain type. 13 If this property is missing then default assumption is false. 14-vin-supply: Input supply name. 15 16Any property defined as part of the core regulator 17binding, defined in regulator.txt, can also be used. 18However a fixed voltage regulator is expected to have the 19regulator-min-microvolt and regulator-max-microvolt 20to be the same. 21 22Example: 23 24 abc: fixedregulator@0 { 25 compatible = "regulator-fixed"; 26 regulator-name = "fixed-supply"; 27 regulator-min-microvolt = <1800000>; 28 regulator-max-microvolt = <1800000>; 29 gpio = <&gpio1 16 0>; 30 startup-delay-us = <70000>; 31 enable-active-high; 32 regulator-boot-on; 33 gpio-open-drain; 34 vin-supply = <&parent_reg>; 35 }; 36