as3722-regulator.txt

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    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         };

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sys/contrib/device-tree/Bindings/regulator/as3722-regulator.txt