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rohm,bh1750 (on i2c bus)

Vendor: ROHM Semiconductor Co., Ltd

Description

Rohm BH1750 ambient light 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).

supply-gpios

phandle-array

GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.

vin-supply

phandle

Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.

resolution

int

Resolution of the measurement result
0 = low resolution
1 = high resolution
2 = high resolution 2
The default mode number 1 is mentioned
in the datasheet as recommended by the
sensor manufacturer. One should pick
other mode, if higher or lower resolution
is desired.

Default value: 1

Legal values: 0, 1, 2

mtreg

int

Duration of single measurement process.
The greater the value, the longer the duration
and greater accuracy. After sensor power-on
mtreg register is set to default value of
this property (chosen by sensor manufacturer): 69.
Valid values are in range 31-254 (inclusive).

Default value: 69