The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/power/supply/twl-charger.txt

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    1 TWL BCI (Battery Charger Interface)
    2 
    3 The battery charger needs to interact with the USB phy in order
    4 to know when charging is permissible, and when there is a connection
    5 or disconnection.
    6 
    7 The choice of phy cannot be configured at a hardware level, so there
    8 is no value in explicit configuration in device-tree.  Rather
    9 if there is a sibling of the BCI node which is compatible with
   10 "ti,twl4030-usb", then that is used to determine when and how
   11 use USB power for charging.
   12 
   13 Required properties:
   14 - compatible:
   15   - "ti,twl4030-bci"
   16 - interrupts: two interrupt lines from the TWL SIH (secondary
   17   interrupt handler) - interrupts 9 and 2.
   18 
   19 Optional properties:
   20 - ti,bb-uvolt: microvolts for charging the backup battery.
   21 - ti,bb-uamp: microamps for charging the backup battery.
   22 
   23 Examples:
   24 
   25 bci {
   26    compatible = "ti,twl4030-bci";
   27    interrupts = <9>, <2>;
   28    ti,bb-uvolt = <3200000>;
   29    ti,bb-uamp = <150>;
   30 };

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