Documentation/devicetree/bindings/mfd/rohm,bd71837-pmic.txt

   1 * ROHM BD71837 and BD71847 Power Management Integrated Circuit bindings
   2
   3 BD71837MWV and BD71847MWV are programmable Power Management ICs for powering
   4 single-core, dual-core, and quad-core SoCs such as NXP-i.MX 8M. They are
   5 optimized for low BOM cost and compact solution footprint. BD71837MWV
   6 integrates 8 Buck regulators and 7 LDOs. BD71847MWV contains 6 Buck regulators
   7 and 6 LDOs.
   8
   9 Datasheet for BD71837 is available at:
  10 https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e
  11
  12 Required properties:
  13  - compatible           : Should be "rohm,bd71837" for bd71837
  14                                     "rohm,bd71847" for bd71847.
  15  - reg                  : I2C slave address.
  16  - interrupt-parent     : Phandle to the parent interrupt controller.
  17  - interrupts           : The interrupt line the device is connected to.
  18  - clocks               : The parent clock connected to PMIC. If this is missing
  19                           32768 KHz clock is assumed.
  20  - #clock-cells         : Should be 0.
  21  - regulators:          : List of child nodes that specify the regulators.
  22                           Please see ../regulator/rohm,bd71837-regulator.txt
  23
  24 Optional properties:
  25 - clock-output-names    : Should contain name for output clock.
  26
  27 Example:
  28
  29         /* external oscillator node */
  30         osc: oscillator {
  31                 compatible = "fixed-clock";
  32                 #clock-cells = <1>;
  33                 clock-frequency  = <32768>;
  34                 clock-output-names = "osc";
  35         };
  36
  37         pmic: pmic@4b {
  38                 compatible = "rohm,bd71837";
  39                 reg = <0x4b>;
  40                 interrupt-parent = <&gpio1>;
  41                 interrupts = <29 GPIO_ACTIVE_LOW>;
  42                 interrupt-names = "irq";
  43                 #clock-cells = <0>;
  44                 clocks = <&osc 0>;
  45                 clock-output-names = "bd71837-32k-out";
  46
  47                 regulators {
  48                         buck1: BUCK1 {
  49                                 regulator-name = "buck1";
  50                                 regulator-min-microvolt = <700000>;
  51                                 regulator-max-microvolt = <1300000>;
  52                                 regulator-boot-on;
  53                                 regulator-ramp-delay = <1250>;
  54                         };
  55                 };
  56         };
  57
  58         /* Clock consumer node */
  59         rtc@0 {
  60                 compatible = "company,my-rtc";
  61                 clock-names = "my-clock";
  62                 clocks = <&pmic>;
  63         };