st,lps22df (on i3c bus)
Vendor: STMicroelectronics N.V.
Description
STMicroelectronics LPS22DF pressure and temperature sensor connected to I3C
bus
Properties
Properties not inherited from the base binding file.
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Type |
Details |
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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.
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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.
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Dynamic address to be assigned to the device.
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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).
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DRDY pin
This pin defaults to active high when produced by the sensor.
The property value should ensure the flags properly describe
the signal that is presented to the driver.
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Selects the pulsed mode for data-ready interrupt when enabled,
and the latched mode when disabled.
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Specify the output data rate expressed in samples per second (Hz).
The default is the power-on reset value.
- 0 # LPS2xDF_DT_ODR_POWER_DOWN
- 1 # LPS2xDF_DT_ODR_1HZ
- 2 # LPS2xDF_DT_ODR_4HZ
- 3 # LPS2xDF_DT_ODR_10HZ
- 4 # LPS2xDF_DT_ODR_25HZ
- 5 # LPS2xDF_DT_ODR_50HZ
- 6 # LPS2xDF_DT_ODR_75HZ
- 7 # LPS2xDF_DT_ODR_100HZ
- 8 # LPS2xDF_DT_ODR_200HZ
Legal values: |
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Specify the low pass filter value to be applied to pressure data.
The default is the power-on reset value.
- 0 # LPS2xDF_DT_LP_FILTER_OFF
- 1 # LPS2xDF_DT_LP_FILTER_ODR_4
- 3 # LPS2xDF_DT_LP_FILTER_ODR_9
Legal values: |
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Specify the average filter value (i.e. number of samples) to be applied
to pressure and temperature data.
The default is the power-on reset value.
- 0 # LPS2xDF_DT_AVG_4_SAMPLES
- 1 # LPS2xDF_DT_AVG_8_SAMPLES
- 2 # LPS2xDF_DT_AVG_16_SAMPLES
- 3 # LPS2xDF_DT_AVG_32_SAMPLES
- 4 # LPS2xDF_DT_AVG_64_SAMPLES
- 5 # LPS2xDF_DT_AVG_128_SAMPLES
- 6 # LPS2xDF_DT_AVG_256_SAMPLES
- 7 # LPS2xDF_DT_AVG_512_SAMPLES
Legal values: |
Deprecated properties not inherited from the base binding file.
(None)
Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “st,lps22df” compatible.
Name |
Type |
Details |
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Property to identify that a device can be used as wake up source.
When this property is provided a specific flag is set into the
device that tells the system that the device is capable of
wake up the system.
Wake up capable devices are disabled (interruptions will not wake up
the system) by default but they can be enabled at runtime if necessary.
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Power domain the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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Contains 3 fields.
For I3C devices, the 3 fields are static address, first half
of Provisioned ID, and the second half of the Provisioned ID.
1. The static address can be assigned to be the target device's
dynamic address before Dynamic Address Assignment (DAA)
starts. Can be zero if static address is not used, and
target address is determined via DAA.
2. First half of the Provisioned ID contains the manufacturer
ID left-shifted by 1, where the manufacturer ID is
the bits 33-47 (zero-based) of the 48-bit Provisioned ID.
3. Second half of the Provisioned ID contains the combination of
the part ID (bits 16-31 of the Provisioned ID) left-shifted
by 16, and the instance ID (bits 12-15 of the Provisioned ID)
left-shifted by 12. Basically, this is the lower 32 bits
of the Provisioned ID.
Note that the DT node of a I3C target device should be in format
"<node name>@<address + PID>", e.g. "sensor@4200001234012345678",
where the PID part is expanded to be a 64-bit integer.
For I2C devices, the 3 fields are static address, 0x00, and
value of the Legacy Virtual Register (LVR).
1. 7-bit address of the I2C device. (Note that 10-bit
addressing is not supported.)
2. Always 0x00.
3. LVR describes the I2C device where,
* bit[31:8]: unused.
* bit[7:5]: I2C device index:
* Index 0: I2C device has a 50 ns spike filter where
it is not affected by high frequency on SCL.
* Index 1: I2C device does not have a 50 ns spike filter
but can work with high frequency on SCL.
* Index 2: I2C device does not have a 50 ns spike filter
and cannot work with high frequency on SCL.
* Other values are reserved.
* bit[4]: I2C mode indicator:
* 0: FM+ mode
* 1: FM mode
* bit[3:0]: reserved.
The DT node of a I2C device should be in format
"<node name>@<address + 00000000 + LVR>",
e.g. "sensor@5000000000000000FF", where the middle 0x00 and LVR
are both expanded to 32-bit integers.
This property is required. See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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Clock gate information
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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