On Mon, Aug 07, 2017 at 12:54:17PM -0700, Liam Breck wrote:
> From: Liam Breck <kernel@xxxxxxxxxxxxxxxxx>
>
> Document monitored-battery and ti,system-minimum-microvolt properties.
>
> Cc: Rob Herring <robh@xxxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Signed-off-by: Liam Breck <kernel@xxxxxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/power/supply/bq24190.txt | 49 ++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/power/supply/bq24190.txt
>
> diff --git a/Documentation/devicetree/bindings/power/supply/bq24190.txt b/Documentation/devicetree/bindings/power/supply/bq24190.txt
> new file mode 100644
> index 00000000..82a1c842
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/bq24190.txt
> @@ -0,0 +1,49 @@
> +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 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.
> +
> +Other features:
> +- Use gpio-hog to set the OTG pin high to enable 500mA charge current on USB SDP port.
Why doesn't the charger driver control this?
> +
> +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";
> + };
> + };
> --
> 2.13.2
>
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