linux/Documentation/devicetree/bindings/regulator/regulator.txt
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   1Voltage/Current Regulators
   2
   3Optional properties:
   4- regulator-name: A string used as a descriptive name for regulator outputs
   5- regulator-min-microvolt: smallest voltage consumers may set
   6- regulator-max-microvolt: largest voltage consumers may set
   7- regulator-microvolt-offset: Offset applied to voltages to compensate for voltage drops
   8- regulator-min-microamp: smallest current consumers may set
   9- regulator-max-microamp: largest current consumers may set
  10- regulator-always-on: boolean, regulator should never be disabled
  11- regulator-boot-on: bootloader/firmware enabled regulator
  12- regulator-allow-bypass: allow the regulator to go into bypass mode
  13- <name>-supply: phandle to the parent supply/regulator node
  14- regulator-ramp-delay: ramp delay for regulator(in uV/uS)
  15
  16Deprecated properties:
  17- regulator-compatible: If a regulator chip contains multiple
  18  regulators, and if the chip's binding contains a child node that
  19  describes each regulator, then this property indicates which regulator
  20  this child node is intended to configure. If this property is missing,
  21  the node's name will be used instead.
  22
  23Example:
  24
  25        xyzreg: regulator@0 {
  26                regulator-min-microvolt = <1000000>;
  27                regulator-max-microvolt = <2500000>;
  28                regulator-always-on;
  29                vin-supply = <&vin>;
  30        };
  31
  32Regulator Consumers:
  33Consumer nodes can reference one or more of its supplies/
  34regulators using the below bindings.
  35
  36- <name>-supply: phandle to the regulator node
  37
  38These are the same bindings that a regulator in the above
  39example used to reference its own supply, in which case
  40its just seen as a special case of a regulator being a
  41consumer itself.
  42
  43Example of a consumer device node (mmc) referencing two
  44regulators (twl_reg1 and twl_reg2),
  45
  46        twl_reg1: regulator@0 {
  47                ...
  48                ...
  49                ...
  50        };
  51
  52        twl_reg2: regulator@1 {
  53                ...
  54                ...
  55                ...
  56        };
  57
  58        mmc: mmc@0x0 {
  59                ...
  60                ...
  61                vmmc-supply = <&twl_reg1>;
  62                vmmcaux-supply = <&twl_reg2>;
  63        };
  64