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Diffstat (limited to 'Documentation/devicetree/bindings/power/supply/bq24190.txt')
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diff --git a/Documentation/devicetree/bindings/power/supply/bq24190.txt b/Documentation/devicetree/bindings/power/supply/bq24190.txt new file mode 100644 index 000000000..9e517d307 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq24190.txt @@ -0,0 +1,51 @@ +TI BQ24190 Li-Ion Battery Charger + +Required properties: +- compatible: contains one of the following: + * "ti,bq24190" + * "ti,bq24192i" +- reg: integer, I2C address of the charger. +- interrupts[-extended]: configuration for charger INT pin. + +Optional properties: +- monitored-battery: phandle of battery characteristics devicetree node + The charger uses the following battery properties: + + precharge-current-microamp: maximum charge current during precharge + phase (typically 20% of battery capacity). + + charge-term-current-microamp: a charge cycle terminates when the + battery voltage is above recharge threshold, and the current is below + this setting (typically 10% of battery capacity). + See also Documentation/devicetree/bindings/power/supply/battery.txt +- ti,system-minimum-microvolt: when power is connected and the battery is below + minimum system voltage, the system will be regulated above this setting. + +Notes: +- Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default + charge current on USB SDP ports, among other features). To simulate this on + boards that wire the pin to a GPIO, set a gpio-hog. + +Example: + + bat: battery { + compatible = "simple-battery"; + precharge-current-microamp = <256000>; + charge-term-current-microamp = <128000>; + // etc. + }; + + bq24190: charger@6a { + compatible = "ti,bq24190"; + reg = <0x6a>; + interrupts-extended = <&gpiochip 10 IRQ_TYPE_EDGE_FALLING>; + monitored-battery = <&bat>; + ti,system-minimum-microvolt = <3200000>; + }; + + &twl_gpio { + otg { + gpio-hog; + gpios = <6 0>; + output-high; + line-name = "otg-gpio"; + }; + }; |