Documentation/devicetree/bindings/regulator/as3722-regulator.txt

   1 Regulator of AMS AS3722 PMIC.
   2 Name of the regulator subnode must be "regulators".
   3
   4 Optional properties:
   5 --------------------
   6 The input supply of regulators are the optional properties on the
   7 regulator node. The AS3722 is having 7 DCDC step-down regulators as
   8 sd[0-6], 10 LDOs as ldo[0-7], ldo[9-11]. The input supply of these
   9 regulators are provided through following properties:
  10 vsup-sd2-supply: Input supply for SD2.
  11 vsup-sd3-supply: Input supply for SD3.
  12 vsup-sd4-supply: Input supply for SD4.
  13 vsup-sd5-supply: Input supply for SD5.
  14 vin-ldo0-supply: Input supply for LDO0.
  15 vin-ldo1-6-supply: Input supply for LDO1 and LDO6.
  16 vin-ldo2-5-7-supply: Input supply for LDO2, LDO5 and LDO7.
  17 vin-ldo3-4-supply: Input supply for LDO3 and LDO4.
  18 vin-ldo9-10-supply: Input supply for LDO9 and LDO10.
  19 vin-ldo11-supply: Input supply for LDO11.
  20
  21 Optional nodes:
  22 --------------
  23 - regulators : Must contain a sub-node per regulator from the list below.
  24                Each sub-node should contain the constraints and initialization
  25                information for that regulator. See regulator.txt for a
  26                description of standard properties for these sub-nodes.
  27                Additional custom properties  are listed below.
  28                sd[0-6], ldo[0-7], ldo[9-11].
  29
  30                Optional sub-node properties:
  31                ----------------------------
  32                 ams,ext-control: External control of the rail. The option of
  33                         this properties will tell which external input is
  34                         controlling this rail. Valid values are 0, 1, 2 ad 3.
  35                         0: There is no external control of this rail.
  36                         1: Rail is controlled by ENABLE1 input pin.
  37                         2: Rail is controlled by ENABLE2 input pin.
  38                         3: Rail is controlled by ENABLE3 input pin.
  39                 ams,enable-tracking: Enable tracking with SD1, only supported
  40                         by LDO3.
  41
  42 Example:
  43 -------
  44         ams3722: ams3722 {
  45                 compatible = "ams,as3722";
  46                 reg = <0x40>;
  47                 ...
  48
  49                 regulators {
  50                         vsup-sd2-supply = <...>;
  51                         ...
  52
  53                         sd0 {
  54                                 regulator-name = "vdd_cpu";
  55                                 regulator-min-microvolt = <700000>;
  56                                 regulator-max-microvolt = <1400000>;
  57                                 regulator-always-on;
  58                                 ams,ext-control = <2>;
  59                         };
  60
  61                         sd1 {
  62                                 regulator-name = "vdd_core";
  63                                 regulator-min-microvolt = <700000>;
  64                                 regulator-max-microvolt = <1400000>;
  65                                 regulator-always-on;
  66                                 ams,ext-control = <1>;
  67                         };
  68
  69                         sd2 {
  70                                 regulator-name = "vddio_ddr";
  71                                 regulator-min-microvolt = <1350000>;
  72                                 regulator-max-microvolt = <1350000>;
  73                                 regulator-always-on;
  74                         };
  75
  76                         sd4 {
  77                                 regulator-name = "avdd-hdmi-pex";
  78                                 regulator-min-microvolt = <1050000>;
  79                                 regulator-max-microvolt = <1050000>;
  80                                 regulator-always-on;
  81                         };
  82
  83                         sd5 {
  84                                 regulator-name = "vdd-1v8";
  85                                 regulator-min-microvolt = <1800000>;
  86                                 regulator-max-microvolt = <1800000>;
  87                                 regulator-always-on;
  88                         };
  89                         ....
  90                 };
  91         };