* HI6421 Multi-Functional Device (MFD), by HiSilicon Ltd.

Required parent device properties:
- compatible    : One of the following chip-specific strings:
 "hisilicon,hi6421-pmic";
 "hisilicon,hi6421v530-pmic";
- reg  : register range space of hi6421;

Supported Hi6421 sub-devices include:

Device                     IRQ Names              Supply Names   Description
------                     ---------              ------------   -----------
regulators               :  None                 : None         : Regulators

Required child device properties:
None.

Example:
 hi6421 {
  compatible = "hisilicon,hi6421-pmic";
  reg = <0xfcc00000 0x0180>; /* 0x60 << 2 */

  regulators {
   // supply for MLC NAND/ eMMC
   hi6421_vout0_reg: hi6421_vout0 {
    regulator-name = "VOUT0";
    regulator-min-microvolt = <2850000>;
    regulator-max-microvolt = <2850000>;
   };

   // supply for 26M Oscillator
   hi6421_vout1_reg: hi6421_vout1 {
    regulator-name = "VOUT1";
    regulator-min-microvolt = <1700000>;
    regulator-max-microvolt = <2000000>;
    regulator-boot-on;
    regulator-always-on;
   };
  };
 };