Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt

   1 STMicroelectronics STPMIC1 Voltage regulators
   2
   3 Regulator Nodes are optional depending on needs.
   4
   5 Available Regulators in STPMIC1 device are:
   6   - buck1 for Buck BUCK1
   7   - buck2 for Buck BUCK2
   8   - buck3 for Buck BUCK3
   9   - buck4 for Buck BUCK4
  10   - ldo1 for LDO LDO1
  11   - ldo2 for LDO LDO2
  12   - ldo3 for LDO LDO3
  13   - ldo4 for LDO LDO4
  14   - ldo5 for LDO LDO5
  15   - ldo6 for LDO LDO6
  16   - vref_ddr for LDO Vref DDR
  17   - boost for Buck BOOST
  18   - pwr_sw1 for VBUS_OTG switch
  19   - pwr_sw2 for SW_OUT switch
  20
  21 Switches are fixed voltage regulators with only enable/disable capability.
  22
  23 Optional properties:
  24 - st,mask-reset: mask reset for this regulator: the regulator configuration
  25   is maintained during pmic reset.
  26 - regulator-pull-down: enable high pull down
  27   if not specified light pull down is used
  28 - regulator-over-current-protection:
  29     if set, all regulators are switched off in case of over-current detection
  30     on this regulator,
  31     if not set, the driver only sends an over-current event.
  32 - interrupt-parent: phandle to the parent interrupt controller
  33 - interrupts: index of current limit detection interrupt
  34 - <regulator>-supply: phandle to the parent supply/regulator node
  35         each regulator supply can be described except vref_ddr.
  36
  37 Example:
  38 regulators {
  39         compatible = "st,stpmic1-regulators";
  40
  41         ldo6-supply = <&v3v3>;
  42
  43         vdd_core: buck1 {
  44                 regulator-name = "vdd_core";
  45                 interrupts = <IT_CURLIM_BUCK1 0>;
  46                 interrupt-parent = <&pmic>;
  47                 st,mask-reset;
  48                 regulator-pull-down;
  49                 regulator-min-microvolt = <700000>;
  50                 regulator-max-microvolt = <1200000>;
  51         };
  52
  53         v3v3: buck4 {
  54                 regulator-name = "v3v3";
  55                 interrupts = <IT_CURLIM_BUCK4 0>;
  56                 interrupt-parent = <&mypmic>;
  57
  58                 regulator-min-microvolt = <3300000>;
  59                 regulator-max-microvolt = <3300000>;
  60         };
  61
  62         v1v8: ldo6 {
  63                 regulator-name = "v1v8";
  64                 regulator-min-microvolt = <1800000>;
  65                 regulator-max-microvolt = <1800000>;
  66                 regulator-over-current-protection;
  67         };
  68 };