jedec,jc-42.4-temp (on i2c bus)

Vendor: JEDEC Solid State Technology Association

Note

An implementation of a driver matching this compatible is available in drivers/sensor/jedec/jc42/jc42.c.

Description

JEDEC JC42.4 compliant temperature sensor. See
http://www.jedec.org/sites/default/files/docs/4_01_04R19.pdf.
Driver based on the Microchip MCP9808 Digital Temperature Sensor. See
http://ww1.microchip.com/downloads/en/DeviceDoc/25095A.pdf.

Properties

Properties not inherited from the base binding file.

Name

Type

Details

int-gpios

phandle-array

 
The alert pin defaults to active low when produced by the
sensor, and is open-drain.  A pull-up may be appropriate.  The
property value should ensure the flags properly describe the
signal that is presented to the driver.

resolution

int

 
Sensor resolution. Default is 0.0625C (0b11),
which is the power-up default.
0 = 0.5°C
1 = 0.25°C
2 = 0.125°C
3 = 0.0625°C

Default value: 3

Legal values: 0, 1, 2, 3

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.