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| -rw-r--r-- | Documentation/devicetree/bindings/power/supply/bq25890.txt | 60 |
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diff --git a/Documentation/devicetree/bindings/power/supply/bq25890.txt b/Documentation/devicetree/bindings/power/supply/bq25890.txt new file mode 100644 index 000000000..805040c6f --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq25890.txt @@ -0,0 +1,60 @@ +Binding for TI bq25890 Li-Ion Charger + +This driver will support the bq25892, the bq25896 and the bq25890. There are +other ICs in the same family but those have not been tested. + +Required properties: +- compatible: Should contain one of the following: + * "ti,bq25890" + * "ti,bq25892" + * "ti,bq25895" + * "ti,bq25896" +- reg: integer, i2c address of the device. +- interrupts: interrupt line; +- ti,battery-regulation-voltage: integer, maximum charging voltage (in uV); +- ti,charge-current: integer, maximum charging current (in uA); +- ti,termination-current: integer, charge will be terminated when current in + constant-voltage phase drops below this value (in uA); +- ti,precharge-current: integer, maximum charge current during precharge + phase (in uA); +- ti,minimum-sys-voltage: integer, when battery is charging and it is below + minimum system voltage, the system will be regulated above + minimum-sys-voltage setting (in uV); +- ti,boost-voltage: integer, VBUS voltage level in boost mode (in uV); +- ti,boost-max-current: integer, maximum allowed current draw in boost mode + (in uA). + +Optional properties: +- ti,boost-low-freq: boolean, if present boost mode frequency will be 500kHz, + otherwise 1.5MHz; +- ti,use-ilim-pin: boolean, if present the ILIM resistor will be used and the + input current will be the lower between the resistor setting and the IINLIM + register setting; +- ti,thermal-regulation-threshold: integer, temperature above which the charge + current is lowered, to avoid overheating (in degrees Celsius). If omitted, + the default setting will be used (120 degrees); +- ti,ibatcomp-micro-ohms: integer, value of a resistor in series with + the battery; +- ti,ibatcomp-clamp-microvolt: integer, maximum charging voltage adjustment due + to expected voltage drop on in-series resistor; + +Example: + +bq25890 { + compatible = "ti,bq25890"; + reg = <0x6a>; + + interrupt-parent = <&gpio1>; + interrupts = <16 IRQ_TYPE_EDGE_FALLING>; + + ti,battery-regulation-voltage = <4200000>; + ti,charge-current = <1000000>; + ti,termination-current = <50000>; + ti,precharge-current = <128000>; + ti,minimum-sys-voltage = <3600000>; + ti,boost-voltage = <5000000>; + ti,boost-max-current = <1000000>; + + ti,use-ilim-pin; + ti,thermal-regulation-threshold = <120>; +}; |