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st,iis2dlpc (on spi bus)
Vendor: STMicroelectronics
Description
STMicroelectronics IIS2DLPC accelerometer accessed through SPI bus
Properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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Maximum clock frequency of device's SPI interface in Hz
This property is required. |
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Duplex mode, full or half. By default it's always full duplex thus 0
as this is, by far, the most common mode.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FULL_DUPLEX
2048 SPI_HALF_DUPLEX
Legal values: |
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Motorola or TI frame format. By default it's always Motorola's,
thus 0 as this is, by far, the most common format.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FRAME_FORMAT_MOTOROLA
32768 SPI_FRAME_FORMAT_TI
Legal values: |
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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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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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Select DRDY pin number (1 or 2).
This number represents which of the two interrupt pins (INT1 or INT2) the drdy line is attached to. This property is not mandatory and if not present it defaults to 1 which is the configuration at power-up.
Default value: Legal values: |
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Range in g. Default is power-up configuration.
Default value: Legal values: |
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Specify the sensor power mode. Default is power-up configuration.
Legal values: |
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Tap mode. Default is power-up configuration.
Legal values: |
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Tap X/Y/Z axes threshold. Default is power-up configuration.
(X/Y/Z values range from 0x00 to 0x1F)
Thresholds to start the tap-event detection procedure on the X/Y/Z axes.
Threshold values for each axis are unsigned 5-bit corresponding
to a 2g acceleration full-scale range. A threshold value equal to zero
corresponds to disable the tap detection on that axis.
For example, if you want to set the threshold for X to 12, for Z to 14
and want to disable tap detection on Y, you should specify in Device Tree
tap-threshold = <12>, <0>, <14>
which is equivalent to X = 12 * 2g/32 = 750mg and Z = 14 * 2g/32 = 875mg.
Default value: |
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Tap shock value. Default is power-up configuration.
(values range from 0x0 to 0x3)
This register represents the maximum time of an over-threshold signal
detection to be recognized as a tap event. Where 0 equals 4*1/ODR and
1LSB = 8*1/ODR.
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Tap latency. Default is power-up configuration.
(values range from 0x0 to 0xF)
When double-tap recognition is enabled, this register expresses the
maximum time between two successive detected taps to determine a
double-tap event. Where 0 equals 16*1/ODR and 1LSB = 32*1/ODR.
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Expected quiet time after a tap detection. Default is power-up configuration.
(values range from 0x0 to 0x3)
This register represents the time after the first detected tap in which
there must not be any overthreshold event. Where 0 equals 2*1/ODR
and 1LSB = 4*1/ODR.
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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,iis2dlpc” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
This property is required. See Important properties for more information. |
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Human readable string describing the device (used as device_get_binding() argument)
This property is required. See Important properties for more information. |
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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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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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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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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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