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    Subject[PATCH v3 1/3] dt-binding: power: Add otg regulator binding
    Date
    Add a binding for the regulator which controls the OTG chargepath switch.
    The OTG switch gets its power from pm8941_5vs1, and that should be
    expressed as a usb-otg-in-supply property in the DT node for the
    charger driver. The regulator name is "otg".

    Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
    ---
    Changes since v1
    - switch supply name to have dashes instead of underscores
    - remove superfluous DT explanations in the otg node description
    ---
    .../devicetree/bindings/power_supply/qcom_smbb.txt | 19 +++++++++++++++++++
    1 file changed, 19 insertions(+)

    diff --git a/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt b/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt
    index 65b88fa..28b6da7 100644
    --- a/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt
    +++ b/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt
    @@ -105,6 +105,22 @@ PROPERTIES
    regulation must be done externally to fully comply with
    the JEITA safety guidelines if this flag is set.

    +- usb-otg-in-supply:
    + Usage: optional
    + Value type: <phandle>
    + Description: Reference to the regulator supplying power to the USB_OTG_IN
    + pin.
    +
    +child nodes:
    +- otg:
    + Usage: optional
    + Description: This node defines a regulator used to control the direction
    + of VBUS voltage - specifically: whether to supply voltage
    + to VBUS for host mode operation of the OTG port, or allow
    + input voltage from external VBUS for charging. In the
    + hardware, the supply for this regulator comes from
    + usb-otg-in-supply.
    +
    EXAMPLE
    charger@1000 {
    compatible = "qcom,pm8941-charger";
    @@ -128,4 +144,7 @@ charger@1000 {

    qcom,fast-charge-current-limit = <1000000>;
    qcom,dc-charge-current-limit = <1000000>;
    + usb-otg-in-supply = <&pm8941_5vs1>;
    +
    + otg {};
    };
    --
    2.6.3


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