Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.txt

   1 ROHM BD71837 and BD71847 Power Management Integrated Circuit regulator bindings
   2
   3 Required properties:
   4  - regulator-name: should be "buck1", ..., "buck8" and "ldo1", ..., "ldo7" for
   5                    BD71837. For BD71847 names should be "buck1", ..., "buck6"
   6                    and "ldo1", ..., "ldo6"
   7
   8 List of regulators provided by this controller. BD71837 regulators node
   9 should be sub node of the BD71837 MFD node. See BD71837 MFD bindings at
  10 Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.txt
  11 Regulator nodes should be named to BUCK_<number> and LDO_<number>. The
  12 definition for each of these nodes is defined using the standard
  13 binding for regulators at
  14 Documentation/devicetree/bindings/regulator/regulator.txt.
  15 Note that if BD71837 starts at RUN state you probably want to use
  16 regulator-boot-on at least for BUCK6 and BUCK7 so that those are not
  17 disabled by driver at startup. LDO5 and LDO6 are supplied by those and
  18 if they are disabled at startup the voltage monitoring for LDO5/LDO6 will
  19 cause PMIC to reset.
  20
  21 The valid names for BD71837 regulator nodes are:
  22 BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, BUCK7, BUCK8
  23 LDO1, LDO2, LDO3, LDO4, LDO5, LDO6, LDO7
  24
  25 The valid names for BD71847 regulator nodes are:
  26 BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6
  27 LDO1, LDO2, LDO3, LDO4, LDO5, LDO6
  28
  29 Optional properties:
  30 - rohm,dvs-run-voltage          : PMIC default "RUN" state voltage in uV.
  31                                   See below table for bucks which support this.
  32 - rohm,dvs-idle-voltage         : PMIC default "IDLE" state voltage in uV.
  33                                   See below table for bucks which support this.
  34 - rohm,dvs-suspend-voltage      : PMIC default "SUSPEND" state voltage in uV.
  35                                   See below table for bucks which support this.
  36 - Any optional property defined in bindings/regulator/regulator.txt
  37
  38 Supported default DVS states:
  39
  40 BD71837:
  41 buck    | dvs-run-voltage       | dvs-idle-voltage      | dvs-suspend-voltage
  42 -----------------------------------------------------------------------------
  43 1       | supported             | supported             | supported
  44 ----------------------------------------------------------------------------
  45 2       | supported             | supported             | not supported
  46 ----------------------------------------------------------------------------
  47 3       | supported             | not supported         | not supported
  48 ----------------------------------------------------------------------------
  49 4       | supported             | not supported         | not supported
  50 ----------------------------------------------------------------------------
  51 rest    | not supported         | not supported         | not supported
  52
  53 BD71847:
  54 buck    | dvs-run-voltage       | dvs-idle-voltage      | dvs-suspend-voltage
  55 -----------------------------------------------------------------------------
  56 1       | supported             | supported             | supported
  57 ----------------------------------------------------------------------------
  58 2       | supported             | supported             | not supported
  59 ----------------------------------------------------------------------------
  60 rest    | not supported         | not supported         | not supported
  61
  62 Example:
  63 regulators {
  64         buck1: BUCK1 {
  65                 regulator-name = "buck1";
  66                 regulator-min-microvolt = <700000>;
  67                 regulator-max-microvolt = <1300000>;
  68                 regulator-boot-on;
  69                 regulator-always-on;
  70                 regulator-ramp-delay = <1250>;
  71                 rohm,dvs-run-voltage = <900000>;
  72                 rohm,dvs-idle-voltage = <850000>;
  73                 rohm,dvs-suspend-voltage = <800000>;
  74         };
  75         buck2: BUCK2 {
  76                 regulator-name = "buck2";
  77                 regulator-min-microvolt = <700000>;
  78                 regulator-max-microvolt = <1300000>;
  79                 regulator-boot-on;
  80                 regulator-always-on;
  81                 regulator-ramp-delay = <1250>;
  82                 rohm,dvs-run-voltage = <1000000>;
  83                 rohm,dvs-idle-voltage = <900000>;
  84         };
  85         buck3: BUCK3 {
  86                 regulator-name = "buck3";
  87                 regulator-min-microvolt = <700000>;
  88                 regulator-max-microvolt = <1300000>;
  89                 regulator-boot-on;
  90                 rohm,dvs-run-voltage = <1000000>;
  91         };
  92         buck4: BUCK4 {
  93                 regulator-name = "buck4";
  94                 regulator-min-microvolt = <700000>;
  95                 regulator-max-microvolt = <1300000>;
  96                 regulator-boot-on;
  97                 rohm,dvs-run-voltage = <1000000>;
  98         };
  99         buck5: BUCK5 {
 100                 regulator-name = "buck5";
 101                 regulator-min-microvolt = <700000>;
 102                 regulator-max-microvolt = <1350000>;
 103                 regulator-boot-on;
 104         };
 105         buck6: BUCK6 {
 106                 regulator-name = "buck6";
 107                 regulator-min-microvolt = <3000000>;
 108                 regulator-max-microvolt = <3300000>;
 109                 regulator-boot-on;
 110         };
 111         buck7: BUCK7 {
 112                 regulator-name = "buck7";
 113                 regulator-min-microvolt = <1605000>;
 114                 regulator-max-microvolt = <1995000>;
 115                 regulator-boot-on;
 116         };
 117         buck8: BUCK8 {
 118                 regulator-name = "buck8";
 119                 regulator-min-microvolt = <800000>;
 120                 regulator-max-microvolt = <1400000>;
 121         };
 122
 123         ldo1: LDO1 {
 124                 regulator-name = "ldo1";
 125                 regulator-min-microvolt = <3000000>;
 126                 regulator-max-microvolt = <3300000>;
 127                 regulator-boot-on;
 128         };
 129         ldo2: LDO2 {
 130                 regulator-name = "ldo2";
 131                 regulator-min-microvolt = <900000>;
 132                 regulator-max-microvolt = <900000>;
 133                 regulator-boot-on;
 134         };
 135         ldo3: LDO3 {
 136                 regulator-name = "ldo3";
 137                 regulator-min-microvolt = <1800000>;
 138                 regulator-max-microvolt = <3300000>;
 139         };
 140         ldo4: LDO4 {
 141                 regulator-name = "ldo4";
 142                 regulator-min-microvolt = <900000>;
 143                 regulator-max-microvolt = <1800000>;
 144         };
 145         ldo5: LDO5 {
 146                 regulator-name = "ldo5";
 147                 regulator-min-microvolt = <1800000>;
 148                 regulator-max-microvolt = <3300000>;
 149         };
 150         ldo6: LDO6 {
 151                 regulator-name = "ldo6";
 152                 regulator-min-microvolt = <900000>;
 153                 regulator-max-microvolt = <1800000>;
 154         };
 155         ldo7_reg: LDO7 {
 156                 regulator-name = "ldo7";
 157                 regulator-min-microvolt = <1800000>;
 158                 regulator-max-microvolt = <3300000>;
 159         };
 160 };
 161
 162