msm8937 充电器检测

1. MSM8937 USB VBUS/ID

Reference designs use the PMI8937 to handle VBUS/ID pin detection
After the PMI8937 driver receives a USBIN valid interrupt and detects a
charger, the driver notifies the USB driver of the connection event through

power supply APIs

2.MSM8937 USB Charging

Reference designs use the PMI8952 to handle USB charger detection.
Once the PMI8952 completes detection, the charger type is passed to the

USB driver using the power supply APIs.