microchip,tcn75a (on i2c bus)

Vendor: Microchip Technology Inc.

Note

An implementation of a driver matching this compatible is available in drivers/sensor/microchip/tcn75a/tcn75a.c.

Description

TCN75A ambient temperature sensor

Properties

Properties not inherited from the base binding file.

Name

Type

Details

alert-gpios

phandle-array

 
ALERT pin
This pin defaults to active low when produced by the sensor.
The property value should ensure the gpio flags properly describe
the signal that is presented to the driver. Required in order to use
triggering support.

resolution

string

 
Sensor resolution. Higher resolutions will result in longer conversion
times. Note: datasheet's claim about the ambient temperature register:
> When the 0.5°C, 0.25°C or 0.125°C resolutions are selected,
> bit 6, bit 7 or bit 8 will remain clear <0>,
> respectively.
appears to be incorrect. Only conversion times seem to be affected by
resolution selection.

Default value: 9-bit

Legal values: '9-bit', '10-bit', '11-bit', '12-bit'

oneshot-mode

boolean

 
Oneshot sampling mode. Reduces power consumption, but disables triggering
feature as well as high resolution sampling. Only supported with 9 bit
resolution.

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.