* AB8500 Multi-Functional Device (MFD)

Required parent device properties:
- compatible             : contains "stericsson,ab8500" or "stericsson,ab8505";
- 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

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-codec             :                      :              : Audio Codec
ab8500-fg                : 			: vddadc       : Fuel Gauge
			 : NCONV_ACCU           :	       : Accumulate N Sample Conversion
			 : BATT_OVV		:	       : Battery Over Voltage
			 : LOW_BAT_F		:	       : LOW threshold battery voltage
			 : CC_INT_CALIB		:	       : Coulomb Counter Internal Calibration
			 : CCEOC		:	       : Coulomb Counter End of Conversion
ab8500-btemp		 :			: vtvout       : Battery Temperature
			 : BAT_CTRL_INDB        :              : Battery Removal Indicator
			 : BTEMP_LOW            :              : Btemp < BtempLow, if battery temperature is lower than -10°C
			 : BTEMP_LOW_MEDIUM     :              : BtempLow < Btemp < BtempMedium,if battery temperature is between -10 and 0°C
			 : BTEMP_MEDIUM_HIGH    :	       : BtempMedium < Btemp < BtempHigh,if battery temperature is between 0°C and MaxTemp
			 : BTEMP_HIGH           :              : Btemp > BtempHigh, if battery temperature is higher than MaxTemp
ab8500-charger		 :			: vddadc       : Charger interface
			 : MAIN_CH_UNPLUG_DET	:	       : main charger unplug detection management (not in 8505)
			 : MAIN_CHARGE_PLUG_DET	:	       : main charger plug detection management (not in 8505)
			 : MAIN_EXT_CH_NOT_OK	:	       : main charger not OK
			 : MAIN_CH_TH_PROT_R	:	       : Die temp is above main charger
			 : MAIN_CH_TH_PROT_F	:	       : Die temp is below main charger
			 : VBUS_DET_F		:	       : VBUS falling detected
			 : VBUS_DET_R		:	       : VBUS rising detected
			 : USB_LINK_STATUS	:	       : USB link status has changed
			 : USB_CH_TH_PROT_R	:	       : Die temp is above usb charger
			 : USB_CH_TH_PROT_F	:	       : Die temp is below usb charger
			 : USB_CHARGER_NOT_OKR	:	       : allowed USB charger not ok detection
			 : VBUS_OVV		:	       : Overvoltage on Vbus ball detected (USB charge is stopped)
			 : CH_WD_EXP		:	       : Charger watchdog detected
ab8500-gpadc             : HW_CONV_END          : vddadc       : Analogue to Digital Converter
                           SW_CONV_END          :              :
ab8500-gpio              :                      :              : GPIO Controller (AB8500)
ab8505-gpio              :                      :              : GPIO Controller (AB8505)
ab8500-ponkey            : ONKEY_DBF            :              : Power-on Key
                           ONKEY_DBR            :              :
ab8500-pwm               :                      :              : Pulse Width Modulator
ab8500-regulator         :                      :              : Regulators (AB8500)
ab8505-regulator         :                      :              : Regulators (AB8505)
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]";

  A few child devices require ADC channels from the GPADC node. Those follow the
  standard bindings from
  https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/iio-consumer.yaml
  and Documentation/devicetree/bindings/iio/adc/adc.yaml

  abx500-temp		 : io-channels "aux1" and "aux2" for measuring external
			   temperatures.
  ab8500-fg		 : io-channel "main_bat_v" for measuring main battery voltage,
  ab8500-btemp		 : io-channels "btemp_ball" and "bat_ctrl" for measuring the
			   battery voltage.
  ab8500-charger	 : io-channels "main_charger_v", "main_charger_c", "vbus_v",
			   "usb_charger_c" for measuring voltage and current of the
			   different charging supplies.

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

Non-standard child device properties:
 - Audio CODEC:
   - stericsson,amic[1|2]-type-single-ended : Single-ended Analoge Mic (default: differential)
   - stericsson,amic1a-bias-vamic2          : Analoge Mic wishes to use a non-standard Vamic
   - stericsson,amic1b-bias-vamic2          : Analoge Mic wishes to use a non-standard Vamic
   - stericsson,amic2-bias-vamic1           : Analoge Mic wishes to use a non-standard Vamic
   - stericsson,earpeice-cmv                : Earpeice voltage (only: 950 | 1100 | 1270 | 1580)

ab8500 {
         compatible = "stericsson,ab8500";
         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>;
		#address-cells = <1>;
		#size-cells = <0>;
		#io-channel-cells = <1>;

		/* GPADC channels */
		bat_ctrl: channel@1 {
			reg = <0x01>;
		};
		btemp_ball: channel@2 {
			reg = <0x02>;
		};
		main_charger_v: channel@3 {
			reg = <0x03>;
		};
		acc_detect1: channel@4 {
			reg = <0x04>;
		};
		acc_detect2: channel@5 {
			reg = <0x05>;
		};
		adc_aux1: channel@6 {
			reg = <0x06>;
		};
		adc_aux2: channel@7 {
			reg = <0x07>;
		};
		main_batt_v: channel@8 {
			reg = <0x08>;
		};
		vbus_v: channel@9 {
			reg = <0x09>;
		};
		main_charger_c: channel@a {
			reg = <0x0a>;
		};
		usb_charger_c: channel@b {
			reg = <0x0b>;
		};
		bk_bat_v: channel@c {
			reg = <0x0c>;
		};
		die_temp: channel@d {
			reg = <0x0d>;
		};
		usb_id: channel@e {
			reg = <0x0e>;
		};
		xtal_temp: channel@12 {
			reg = <0x12>;
		};
		vbat_true_meas: channel@13 {
			reg = <0x13>;
		};
		bat_ctrl_and_ibat: channel@1c {
			reg = <0x1c>;
		};
		vbat_meas_and_ibat: channel@1d {
			reg = <0x1d>;
		};
		vbat_true_meas_and_ibat: channel@1e {
			reg = <0x1e>;
		};
		bat_temp_and_ibat: channel@1f {
			reg = <0x1f>;
		};
        };

	ab8500_temp {
		compatible = "stericsson,abx500-temp";
		io-channels = <&gpadc 0x06>,
			      <&gpadc 0x07>;
		io-channel-name = "aux1", "aux2";
	};

	ab8500_battery: ab8500_battery {
		stericsson,battery-type = "LIPO";
		thermistor-on-batctrl;
	};

	ab8500_fg {
		compatible = "stericsson,ab8500-fg";
		battery	   = <&ab8500_battery>;
		io-channels = <&gpadc 0x08>;
		io-channel-name = "main_bat_v";
	};

	ab8500_btemp {
		compatible = "stericsson,ab8500-btemp";
		battery	   = <&ab8500_battery>;
		io-channels = <&gpadc 0x02>,
			      <&gpadc 0x01>;
		io-channel-name = "btemp_ball",
				"bat_ctrl";
	};

	ab8500_charger {
		compatible	= "stericsson,ab8500-charger";
		battery		= <&ab8500_battery>;
		vddadc-supply	= <&ab8500_ldo_tvout_reg>;
		io-channels = <&gpadc 0x03>,
			      <&gpadc 0x0a>,
			      <&gpadc 0x09>,
			      <&gpadc 0x0b>;
		io-channel-name = "main_charger_v",
				"main_charger_c",
				"vbus_v",
				"usb_charger_c";
	};

        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_intcore_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";
        };

	codec: ab8500-codec {
		compatible = "stericsson,ab8500-codec";

		stericsson,earpeice-cmv = <950>; /* Units in mV. */
	};

        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
                         */
                };
        };
};