1TI BQ24190 Li-Ion Battery Charger 2 3Required properties: 4- compatible: contains one of the following: 5 * "ti,bq24190" 6 * "ti,bq24192" 7 * "ti,bq24192i" 8 * "ti,bq24196" 9- reg: integer, I2C address of the charger. 10- interrupts[-extended]: configuration for charger INT pin. 11 12Optional properties: 13- monitored-battery: phandle of battery characteristics devicetree node 14 The charger uses the following battery properties: 15 + precharge-current-microamp: maximum charge current during precharge 16 phase (typically 20% of battery capacity). 17 + charge-term-current-microamp: a charge cycle terminates when the 18 battery voltage is above recharge threshold, and the current is below 19 this setting (typically 10% of battery capacity). 20 See also Documentation/devicetree/bindings/power/supply/battery.txt 21- ti,system-minimum-microvolt: when power is connected and the battery is below 22 minimum system voltage, the system will be regulated above this setting. 23 24child nodes: 25- usb-otg-vbus: 26 Usage: optional 27 Description: Regulator that is used to control the VBUS voltage direction for 28 either USB host mode or for charging on the OTG port. 29 30Notes: 31- Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default 32 charge current on USB SDP ports, among other features). To simulate this on 33 boards that wire the pin to a GPIO, set a gpio-hog. 34 35Example: 36 37 bat: battery { 38 compatible = "simple-battery"; 39 precharge-current-microamp = <256000>; 40 charge-term-current-microamp = <128000>; 41 // etc. 42 }; 43 44 bq24190: charger@6a { 45 compatible = "ti,bq24190"; 46 reg = <0x6a>; 47 interrupts-extended = <&gpiochip 10 IRQ_TYPE_EDGE_FALLING>; 48 monitored-battery = <&bat>; 49 ti,system-minimum-microvolt = <3200000>; 50 51 usb_otg_vbus: usb-otg-vbus { }; 52 }; 53 54 &twl_gpio { 55 otg { 56 gpio-hog; 57 gpios = <6 0>; 58 output-high; 59 line-name = "otg-gpio"; 60 }; 61 }; 62