Documentation/devicetree/bindings/mfd/max77686.txt

   1 Maxim MAX77686 multi-function device
   2
   3 MAX77686 is a Mulitifunction device with PMIC, RTC and Charger on chip. It is
   4 interfaced to host controller using i2c interface. PMIC and Charger submodules
   5 are addressed using same i2c slave address whereas RTC submodule uses
   6 different i2c slave address,presently for which we are statically creating i2c
   7 client while probing.This document describes the binding for mfd device and
   8 PMIC submodule.
   9
  10 Required properties:
  11 - compatible : Must be "maxim,max77686";
  12 - reg : Specifies the i2c slave address of PMIC block.
  13 - interrupts : This i2c device has an IRQ line connected to the main SoC.
  14 - interrupt-parent : The parent interrupt controller.
  15
  16 Optional node:
  17 - voltage-regulators : The regulators of max77686 have to be instantiated
  18   under subnode named "voltage-regulators" using the following format.
  19
  20         regulator_name {
  21                 regulator-compatible = LDOn/BUCKn
  22                 standard regulator constraints....
  23         };
  24         refer Documentation/devicetree/bindings/regulator/regulator.txt
  25
  26   The regulator-compatible property of regulator should initialized with string
  27 to get matched with their hardware counterparts as follow:
  28
  29         -LDOn   :       for LDOs, where n can lie in range 1 to 26.
  30                         example: LDO1, LDO2, LDO26.
  31         -BUCKn  :       for BUCKs, where n can lie in range 1 to 9.
  32                         example: BUCK1, BUCK5, BUCK9.
  33
  34 Example:
  35
  36         max77686@09 {
  37                 compatible = "maxim,max77686";
  38                 interrupt-parent = <&wakeup_eint>;
  39                 interrupts = <26 0>;
  40                 reg = <0x09>;
  41
  42                 voltage-regulators {
  43                         ldo11_reg {
  44                                 regulator-compatible = "LDO11";
  45                                 regulator-name = "vdd_ldo11";
  46                                 regulator-min-microvolt = <1900000>;
  47                                 regulator-max-microvolt = <1900000>;
  48                                 regulator-always-on;
  49                         };
  50
  51                         buck1_reg {
  52                                 regulator-compatible = "BUCK1";
  53                                 regulator-name = "vdd_mif";
  54                                 regulator-min-microvolt = <950000>;
  55                                 regulator-max-microvolt = <1300000>;
  56                                 regulator-always-on;
  57                                 regulator-boot-on;
  58                         };
  59         }