* AB8500 Multi-Functional Device (MFD)

Required parent device properties:
- compatible             : contains "stericsson,ab8500";
- interrupts             : contains the IRQ line for the AB8500
- interrupt-controller   : describes the AB8500 as an Interrupt Controller (has its own domain)
- #interrupt-cells       : should be 2, for 2-cell format
                            - The first cell is the AB8500 local IRQ number
                            - The second cell is used to specify optional parameters
                              - bits[3:0] trigger type and level flags:
                                  1 = low-to-high edge triggered
                                  2 = high-to-low edge triggered
                                  4 = active high level-sensitive
                                  8 = active low level-sensitive

Optional parent device properties:
- reg                    : contains the PRCMU mailbox address for the AB8500 i2c port

The AB8500 consists of a large and varied group of sub-devices:

Device                     IRQ Names              Supply Names   Description
------                     ---------              ------------   -----------
ab8500-bm                :                      :              : Battery Manager
ab8500-btemp             :                      :              : Battery Temperature
ab8500-charger           :                      :              : Battery Charger
ab8500-fg                :                      :              : Fuel Gauge
ab8500-gpadc             : HW_CONV_END          : vddadc       : Analogue to Digital Converter
                           SW_CONV_END          :              :
ab8500-gpio              :                      :              : GPIO Controller
ab8500-ponkey            : ONKEY_DBF            :              : Power-on Key
                           ONKEY_DBR            :              :
ab8500-pwm               :                      :              : Pulse Width Modulator
ab8500-regulator         :                      :              : Regulators
ab8500-rtc               : 60S                  :              : Real Time Clock
                         : ALARM                :              :
ab8500-sysctrl           :                      :              : System Control
ab8500-usb               : ID_WAKEUP_R          : vddulpivio18 : Universal Serial Bus
                         : ID_WAKEUP_F          : v-ape        :
                         : VBUS_DET_F           : musb_1v8     :
                         : VBUS_DET_R           :              :
                         : USB_LINK_STATUS      :              :
                         : USB_ADP_PROBE_PLUG   :              :
                         : USB_ADP_PROBE_UNPLUG :              :

Required child device properties:
- compatible             : "stericsson,ab8500-[bm|btemp|charger|fg|gpadc|gpio|ponkey|
                                               pwm|regulator|rtc|sysctrl|usb]";

Optional child device properties:
- interrupts             : contains the device IRQ(s) using the 2-cell format (see above)
- interrupt-names        : contains names of IRQ resource in the order in which they were
                           supplied in the interrupts property
- <supply_name>-supply   : contains a phandle to the regulator supply node in Device Tree

ab8500@5 {
         compatible = "stericsson,ab8500";
         reg = <5>; /* mailbox 5 is i2c */
         interrupts = <0 40 0x4>;
         interrupt-controller;
         #interrupt-cells = <2>;

         ab8500-rtc {
                 compatible = "stericsson,ab8500-rtc";
                 interrupts = <17 0x4
                               18 0x4>;
                 interrupt-names = "60S", "ALARM";
         };

        ab8500-gpadc {
                compatible = "stericsson,ab8500-gpadc";
                interrupts = <32 0x4
                              39 0x4>;
                interrupt-names = "HW_CONV_END", "SW_CONV_END";
                vddadc-supply = <&ab8500_ldo_tvout_reg>;
        };

        ab8500-usb {
                compatible = "stericsson,ab8500-usb";
                interrupts = < 90 0x4
                               96 0x4
                               14 0x4
                               15 0x4
                               79 0x4
                               74 0x4
                               75 0x4>;
                interrupt-names = "ID_WAKEUP_R",
                                  "ID_WAKEUP_F",
                                  "VBUS_DET_F",
                                  "VBUS_DET_R",
                                  "USB_LINK_STATUS",
                                  "USB_ADP_PROBE_PLUG",
                                  "USB_ADP_PROBE_UNPLUG";
                vddulpivio18-supply = <&ab8500_ldo_initcore_reg>;
                v-ape-supply = <&db8500_vape_reg>;
                musb_1v8-supply = <&db8500_vsmps2_reg>;
        };

        ab8500-ponkey {
                compatible = "stericsson,ab8500-ponkey";
                interrupts = <6 0x4
                              7 0x4>;
                interrupt-names = "ONKEY_DBF", "ONKEY_DBR";
        };

        ab8500-sysctrl {
                compatible = "stericsson,ab8500-sysctrl";
        };

        ab8500-pwm {
                compatible = "stericsson,ab8500-pwm";
        };

        ab8500-regulators {
                compatible = "stericsson,ab8500-regulator";

                ab8500_ldo_aux1_reg: ab8500_ldo_aux1 {
                        /*
                         * See: Documentation/devicetree/bindings/regulator/regulator.txt
                         * for more information on regulators
                         */
                };
        };
};