st,ilps22qs (on i3c bus)
Vendor: STMicroelectronics N.V.
Note
An implementation of a driver matching this compatible is available in drivers/sensor/st/lps2xdf/lps2xdf.c.
Description
STMicroelectronics LPS22DF pressure and temperature sensor connected to I3C
bus
Properties
Node specific properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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Dynamic address to be assigned to the device.
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Indicates if the device supports the CCC SETAASA. If true, it will
be used as an optimization for bus initialization.
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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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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: |
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Specify the full-scale mode.
The default is the power-on reset value.
- 0 # ILPS22QS_DT_FS_MODE_1_1260
- 1 # ILPS22QS_DT_FS_MODE_2_4060
Legal values: |
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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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Deprecated node specific properties
Deprecated properties not inherited from the base binding file.
(None)
Base properties
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,ilps22qs” compatible.
Name |
Type |
Details |
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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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Indicates the operational status of the hardware or other
resource that the node represents. In particular:
- "okay" means the resource is operational and, for example,
can be used by device drivers
- "disabled" means the resource is not operational and the system
should treat it as if it is not present
For details, see "2.3.4 status" in Devicetree Specification v0.4.
Legal values: See Important properties for more information. |
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This property is a list of strings that essentially define what
type of hardware or other resource this devicetree node
represents. Each device driver checks for specific compatible
property values to find the devicetree nodes that represent
resources that the driver should manage.
The recommended format is "vendor,device", The "vendor" part is
an abbreviated name of the vendor. The "device" is usually from
the datasheet.
The compatible property can have multiple values, ordered from
most- to least-specific. Having additional values is useful when the
device is a specific instance of a more general family, to allow the
system to match the most specific driver available.
For details, see "2.3.1 compatible" in Devicetree Specification v0.4.
This property is required. See Important properties for more information. |
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Optional names given to each register block in the "reg" property.
For example:
/ {
soc {
#address-cells = <1>;
#size-cells = <1>;
uart@1000 {
reg = <0x1000 0x2000>, <0x3000 0x4000>;
reg-names = "foo", "bar";
};
};
};
The uart@1000 node has two register blocks:
- one with base address 0x1000, size 0x2000, and name "foo"
- another with base address 0x3000, size 0x4000, and name "bar"
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Information about interrupts generated by the device, encoded as an array
of one or more interrupt specifiers. The format of the data in this property
varies by where the device appears in the interrupt tree. Devices with the same
"interrupt-parent" will use the same format in their interrupts properties.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
See Important properties for more information. |
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Extended interrupt specifier for device, used as an alternative to
the "interrupts" property.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
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Optional names given to each interrupt generated by a device.
The interrupts themselves are defined in either "interrupts" or
"interrupts-extended" properties.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
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If present, this refers to the node which handles interrupts generated
by this device.
For details, see "2.4 Interrupts and Interrupt Mapping" in
Devicetree Specification v0.4.
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Human readable string describing the device. Use of this property is
deprecated except as needed on a case-by-case basis.
For details, see "4.1.2 Miscellaneous Properties" in Devicetree
Specification v0.4.
See Important properties for more information. |
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Information about the device's clock providers. In general, this property
should follow conventions established in the dt-schema binding:
https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/clock/clock.yaml
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Optional names given to each clock provider in the "clocks" property.
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This property encodes the number of <u32> cells used by address fields
in "reg" properties in this node's children.
For details, see "2.3.5 #address-cells and #size-cells" in Devicetree
Specification v0.4.
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This property encodes the number of <u32> cells used by size fields in
"reg" properties in this node's children.
For details, see "2.3.5 #address-cells and #size-cells" in Devicetree
Specification v0.4.
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DMA channel specifiers relevant to the device.
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Optional names given to the DMA channel specifiers in the "dmas" property.
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IO channel specifiers relevant to the device.
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Optional names given to the IO channel specifiers in the "io-channels" property.
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Mailbox / IPM channel specifiers relevant to the device.
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Optional names given to the mbox specifiers in the "mboxes" property.
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Power domain specifiers relevant to the device.
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Optional names given to the power domain specifiers in the "power-domains" property.
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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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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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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