hzgrow,r502a (on uart bus)

Vendor: Hangzhou Grow Technology Co., Ltd.

Description

HZ-Grow GROW_R502A Fingerprint sensor.

Properties

Properties not inherited from the base binding file.

Name

Type

Details

friendly-name

string

Human readable string describing the sensor. It can be used to
distinguish multiple instances of the same model (e.g., lid accelerometer
vs. base accelerometer in a laptop) to a host operating system.

This property is defined in the Generic Sensor Property Usages of the HID
Usage Tables specification
(https://usb.org/sites/default/files/hut1_3_0.pdf, section 22.5).

int-gpios

phandle-array

Interrupt pin. When the sensor is touched, the GPIO is set to high.
It is used to trigger a fingerprint enroll or match operations.

This property is required.

vin-gpios

phandle-array

Voltage input pin to the fingerprint sensor.

act-gpios

phandle-array

Finger detection power pin to detect the presence of finger.