root@orangepizero2:~# fdtdump /tmp/dtbo.pak

**** fdtdump is a low-level debugging tool, not meant for general use.
**** If you want to decompile a dtb, you probably want
****     dtc -I dtb -O dts <filename>

/dts-v1/;
// magic:               0xd00dfeed
// totalsize:           0x11c0 (4544)
// off_dt_struct:       0x38
// off_dt_strings:      0xfec
// off_mem_rsvmap:      0x28
// version:             17
// last_comp_version:   16
// boot_cpuid_phys:     0x0
// size_dt_strings:     0x1d4
// size_dt_struct:      0xfb4

/ {
   compatible = "board_manufacturer,board_model";
   board_id = <0x00020000>;
   board_rev = <0x00020001>;
   another_hw_information = "some_data";
   soc_id = <0x68000000>;
   fragment@1 {
     target = <0xffffffff>;
     __overlay__ {
        #address-cells = <0x00000001>;
        #size-cells = <0x00000000>;
        no_suspend = <0x00000001>;
        status = "okay";
        pmu {
          compatible = "x-powers,axp806";
          reg = <0x00000036>;
          linux,phandle = <0x00000002>;
          phandle = <0x00000002>;
          standby_param {
            vcc-dram = <0x00000008>;
            linux,phandle = <0x00000003>;
            phandle = <0x00000003>;
          };
          regulators {
           dcdca {
               regulator-name = "axp806-dcdca";
               regulator-min-microvolt = <0x000927c0>;
               regulator-max-microvolt = <0x00173180>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000001>;
               phandle = <0x00000001>;
           };
           dcdcb {
               regulator-name = "axp806-dcdcb";
               regulator-min-microvolt = <0x000f4240>;
               regulator-max-microvolt = <0x0026e8f0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x00000004>;
               phandle = <0x00000004>;
           };
           dcdcc {
               regulator-name = "axp806-dcdcc";
               regulator-min-microvolt = <0x000927c0>;
               regulator-max-microvolt = <0x00173180>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000005>;
               phandle = <0x00000005>;
           };
           dcdcd {
               regulator-name = "axp806-dcdcd";
               regulator-min-microvolt = <0x000927c0>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000006>;
               phandle = <0x00000006>;
           };
           dcdce {
               regulator-name = "axp806-dcdce";
               regulator-min-microvolt = <0x00325aa0>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000007>;
               phandle = <0x00000007>;
           };
           aldo1 {
               regulator-name = "axp806-aldo1";
               regulator-min-microvolt = <0x00325aa0>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000008>;
               phandle = <0x00000008>;
           };
           aldo2 {
               regulator-name = "axp806-aldo2";
               regulator-min-microvolt = <0x00325aa0>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x00000009>;
               phandle = <0x00000009>;
           };
           aldo3 {
               regulator-name = "axp806-aldo3";
               regulator-min-microvolt = <0x00325aa0>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x0000000a>;
               phandle = <0x0000000a>;
           };
           bldo1 {
               regulator-name = "axp806-bldo1";
               regulator-min-microvolt = <0x0002bf20>;
               regulator-max-microvolt = <0x001b7740>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               regulator-always-on;
               linux,phandle = <0x0000000b>;
               phandle = <0x0000000b>;
           };
           bldo2 {
               regulator-name = "axp806-bldo2";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x001cfde0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x0000000c>;
               phandle = <0x0000000c>;
           };
           bldo3 {
               regulator-name = "axp806-bldo3";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x001cfde0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x0000000d>;
               phandle = <0x0000000d>;
           };
           bldo4 {
               regulator-name = "axp806-bldo4";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x001cfde0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x0000000e>;
               phandle = <0x0000000e>;
           };
           cldo1 {
               regulator-name = "axp806-cldo1";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x0000000f>;
               phandle = <0x0000000f>;
           };
           cldo2 {
               regulator-name = "axp806-cldo2";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x00401640>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x00000010>;
               phandle = <0x00000010>;
           };
           cldo3 {
               regulator-name = "axp806-cldo3";
               regulator-min-microvolt = <0x000aae60>;
               regulator-max-microvolt = <0x00325aa0>;
               regulator-step-delay-us = <0x00000019>;
               regulator-final-delay-us = <0x00000032>;
               linux,phandle = <0x00000011>;
               phandle = <0x00000011>;
           };
           sw {
               regulator-name = "axp806-sw";
               linux,phandle = <0x00000012>;
               phandle = <0x00000012>;
           };
          };
        };
     };
   };
   fragment@2 {
    target = <0xffffffff>;
    __overlay__ {
        cpu-supply = <0x00000001>;
    };
   };
   __symbols__ {
    pmu0 = "/fragment@1/__overlay__/pmu";
    standby_param = "/fragment@1/__overlay__/pmu/standby_param";
    reg_dcdc1 = "/fragment@1/__overlay__/pmu/regulators/dcdca";
    reg_dcdc2 = "/fragment@1/__overlay__/pmu/regulators/dcdcb";
    reg_dcdc3 = "/fragment@1/__overlay__/pmu/regulators/dcdcc";
    reg_dcdc4 = "/fragment@1/__overlay__/pmu/regulators/dcdcd";
    reg_dcdc5 = "/fragment@1/__overlay__/pmu/regulators/dcdce";
    reg_aldo1 = "/fragment@1/__overlay__/pmu/regulators/aldo1";
    reg_aldo2 = "/fragment@1/__overlay__/pmu/regulators/aldo2";
    reg_aldo3 = "/fragment@1/__overlay__/pmu/regulators/aldo3";
    reg_bldo1 = "/fragment@1/__overlay__/pmu/regulators/bldo1";
    reg_bldo2 = "/fragment@1/__overlay__/pmu/regulators/bldo2";
    reg_bldo3 = "/fragment@1/__overlay__/pmu/regulators/bldo3";
    reg_bldo4 = "/fragment@1/__overlay__/pmu/regulators/bldo4";
    reg_cldo1 = "/fragment@1/__overlay__/pmu/regulators/cldo1";
    reg_cldo2 = "/fragment@1/__overlay__/pmu/regulators/cldo2";
    reg_cldo3 = "/fragment@1/__overlay__/pmu/regulators/cldo3";
    reg_sw = "/fragment@1/__overlay__/pmu/regulators/sw";
   };
   __fixups__ {
      twi5 = "/fragment@1:target:0";
      cpu0 = "/fragment@2:target:0";
   };
   __local_fixups__ {
      fragment@2 {
        __overlay__ {
            cpu-supply = <0x00000000>;
        };
      };
   };
};