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