samsung,s2mpa01.txt

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    1 Binding for Samsung S2MPA01 regulator block
    2 ===========================================
    3 
    4 This is a part of device tree bindings for S2M family multi-function devices.
    5 More information can be found in bindings/mfd/sec-core.txt file.
    6 
    7 The S2MPA01 device provide buck and LDO regulators.
    8 
    9 To register these with regulator framework instantiate under main device node
   10 a sub-node named "regulators" with more sub-nodes for each regulator using the
   11 common regulator binding documented in:
   12  - Documentation/devicetree/bindings/regulator/regulator.txt
   13 
   14 
   15 Names of regulators supported by S2MPA01 device:
   16         - LDOn
   17                   - valid values for n are 1 to 26
   18                   - Example: LDO1, LD02, LDO26
   19         - BUCKn
   20                   - valid values for n are 1 to 10.
   21                   - Example: BUCK1, BUCK2, BUCK9
   22 Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
   23 as per the datasheet of device.
   24 
   25 
   26 Optional properties of buck regulator nodes under "regulators" sub-node:
   27  - regulator-ramp-delay: ramp delay in uV/us. May be 6250, 12500
   28    (default), 25000, or 50000. May be 0 for disabling the ramp delay on
   29    BUCK{1,2,3,4}.
   30 
   31    In the absence of the regulator-ramp-delay property, the default ramp
   32    delay will be used.
   33 
   34    Note: Some bucks share the ramp rate setting i.e. same ramp value
   35    will be set for a particular group of bucks so provide the same
   36    regulator-ramp-delay value for them.
   37    Groups sharing ramp rate:
   38     - buck{1,6},
   39     - buck{2,4},
   40     - buck{8,9,10}.
   41 
   42 Example:
   43 
   44         s2mpa01_pmic@66 {
   45                 compatible = "samsung,s2mpa01-pmic";
   46                 reg = <0x66>;
   47 
   48                 regulators {
   49                         ldo1_reg: LDO1 {
   50                                 regulator-name = "VDD_ALIVE";
   51                                 regulator-min-microvolt = <1000000>;
   52                                 regulator-max-microvolt = <1000000>;
   53                         };
   54 
   55                         ldo2_reg: LDO2 {
   56                                 regulator-name = "VDDQ_MMC2";
   57                                 regulator-min-microvolt = <2800000>;
   58                                 regulator-max-microvolt = <2800000>;
   59                                 regulator-always-on;
   60                         };
   61 
   62                         buck1_reg: BUCK1 {
   63                                 regulator-name = "vdd_mif";
   64                                 regulator-min-microvolt = <950000>;
   65                                 regulator-max-microvolt = <1350000>;
   66                                 regulator-always-on;
   67                                 regulator-boot-on;
   68                         };
   69 
   70                         buck2_reg: BUCK2 {
   71                                 regulator-name = "vdd_arm";
   72                                 regulator-min-microvolt = <950000>;
   73                                 regulator-max-microvolt = <1350000>;
   74                                 regulator-always-on;
   75                                 regulator-boot-on;
   76                                 regulator-ramp-delay = <50000>;
   77                         };
   78                 };
   79         };

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sys/contrib/device-tree/Bindings/regulator/samsung,s2mpa01.txt