| QPNP External USB VBUS Detection Circuit |
| |
| Discrete USB VBUS detection circuitry can be connected to Qualcomm PMICs. |
| Such circuits can be used to detect the when a USB cable is connected to |
| an upstream port such as a standard host or a wall charger by detecting |
| the presence of VBUS voltage. The PMIC is notified by a detection event |
| via SPMI bus interrupt. A software driver can in turn notify the USB |
| subsytem using the power_supply framework. |
| |
| Required Properties: |
| - compatible: must be "qcom,qpnp-usbdetect" |
| - interrupts: an interrupt triggered by the output of the detection circuit |
| - interrupt-names: must be "vbus_det_irq" |
| |
| Optional Properties: |
| - vin-supply: phandle to a regulator that powers this circuit, if needed |
| |
| Example: |
| |
| usb_detect { |
| compatible = "qcom,qpnp-usbdetect"; |
| interrupt-parent = <&spmi_bus>; |
| interrupts = <0x0 0xCA 0x0>; /* PMA8084 GPIO 11 */ |
| interrupt-names = "vbus_det_irq"; |
| vin-supply = <&vbus_det_reg>; |
| }; |
