Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt

   1 * ROHM BD70528 Power Management Integrated Circuit bindings
   2
   3 BD70528MWV is an ultra-low quiescent current general purpose, single-chip,
   4 power management IC for battery-powered portable devices. The IC
   5 integrates 3 ultra-low current consumption buck converters, 3 LDOs and 2
   6 LED Drivers. Also included are 4 GPIOs, a real-time clock (RTC), a 32kHz
   7 clock gate, high-accuracy VREF for use with an external ADC, flexible
   8 dual-input power path, 10 bit SAR ADC for battery temperature monitor and
   9 1S battery charger with scalable charge currents.
  10
  11 Required properties:
  12  - compatible           : Should be "rohm,bd70528"
  13  - reg                  : I2C slave address.
  14  - interrupts           : The interrupt line the device is connected to.
  15  - interrupt-controller : To indicate BD70528 acts as an interrupt controller.
  16  - #interrupt-cells     : Should be 2. Usage is compliant to the 2 cells
  17                           variant of ../interrupt-controller/interrupts.txt
  18  - gpio-controller      : To indicate BD70528 acts as a GPIO controller.
  19  - #gpio-cells          : Should be 2. The first cell is the pin number and
  20                           the second cell is used to specify flags. See
  21                           ../gpio/gpio.txt for more information.
  22  - #clock-cells         : Should be 0.
  23  - regulators:          : List of child nodes that specify the regulators.
  24                           Please see ../regulator/rohm,bd70528-regulator.txt
  25
  26 Optional properties:
  27  - clock-output-names   : Should contain name for output clock.
  28
  29 Example:
  30 /* External oscillator */
  31 osc: oscillator {
  32         compatible = "fixed-clock";
  33         #clock-cells = <1>;
  34         clock-frequency  = <32768>;
  35         clock-output-names = "osc";
  36 };
  37
  38 pmic: pmic@4b {
  39         compatible = "rohm,bd70528";
  40         reg = <0x4b>;
  41         interrupt-parent = <&gpio1>;
  42         interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
  43         clocks = <&osc 0>;
  44         #clock-cells = <0>;
  45         clock-output-names = "bd70528-32k-out";
  46         #gpio-cells = <2>;
  47         gpio-controller;
  48         interrupt-controller;
  49         #interrupt-cells = <2>;
  50
  51         regulators {
  52                 buck1: BUCK1 {
  53                         regulator-name = "buck1";
  54                         regulator-min-microvolt = <1200000>;
  55                         regulator-max-microvolt = <3400000>;
  56                         regulator-boot-on;
  57                         regulator-ramp-delay = <125>;
  58                 };
  59                 buck2: BUCK2 {
  60                         regulator-name = "buck2";
  61                         regulator-min-microvolt = <1200000>;
  62                         regulator-max-microvolt = <3300000>;
  63                         regulator-boot-on;
  64                         regulator-ramp-delay = <125>;
  65                 };
  66                 buck3: BUCK3 {
  67                         regulator-name = "buck3";
  68                         regulator-min-microvolt = <800000>;
  69                         regulator-max-microvolt = <1800000>;
  70                         regulator-boot-on;
  71                         regulator-ramp-delay = <250>;
  72                 };
  73                 ldo1: LDO1 {
  74                         regulator-name = "ldo1";
  75                         regulator-min-microvolt = <1650000>;
  76                         regulator-max-microvolt = <3300000>;
  77                         regulator-boot-on;
  78                 };
  79                 ldo2: LDO2 {
  80                         regulator-name = "ldo2";
  81                         regulator-min-microvolt = <1650000>;
  82                         regulator-max-microvolt = <3300000>;
  83                         regulator-boot-on;
  84                 };
  85
  86                 ldo3: LDO3 {
  87                         regulator-name = "ldo3";
  88                         regulator-min-microvolt = <1650000>;
  89                         regulator-max-microvolt = <3300000>;
  90                 };
  91                 led_ldo1: LED_LDO1 {
  92                         regulator-name = "led_ldo1";
  93                         regulator-min-microvolt = <200000>;
  94                         regulator-max-microvolt = <300000>;
  95                 };
  96                 led_ldo2: LED_LDO2 {
  97                         regulator-name = "led_ldo2";
  98                         regulator-min-microvolt = <200000>;
  99                         regulator-max-microvolt = <300000>;
 100                 };
 101         };
 102 };