nxp,fxos8700 (on spi bus)
Vendor: NXP Semiconductors
Note
An implementation of a driver matching this compatible is available in drivers/sensor/nxp/fxos8700/fxos8700.c.
Description
FXOS8700 6-axis accelerometer/magnetometer sensor
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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SPI clock polarity which indicates the clock idle state.
If it is used, the clock idle state is logic high; otherwise, low.
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SPI clock phase that indicates on which edge data is sampled.
If it is used, data is sampled on the second edge; otherwise, on the first edge.
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In some cases, it is necessary for the master to manage SPI chip select
under software control, so that multiple spi transactions can be performed
without releasing it. A typical use case is variable length SPI packets
where the first spi transaction reads the length and the second spi transaction
reads length bytes.
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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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RST pin
This pin defaults to active high when consumed by the sensor.
The property value should ensure the flags properly describe
the signal that is presented to the driver.
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INT1 pin
This pin defaults to active low 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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INT2 pin
This pin defaults to active low 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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Range in g
Default value: Legal values: |
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Power mode
Legal values: |
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Pulse configuration register
Default value: |
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Pulse X-axis threshold
Threshold to start the pulse-event detection procedure on the X-axis.
Threshold values for each axis are unsigned 7-bit numbers with a fixed
resolution of 0.063 g/LSB, corresponding to an 8g acceleration
full-scale range.
Default value: |
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Pulse Y-axis threshold
Threshold to start the pulse-event detection procedure on the Y-axis.
Threshold values for each axis are unsigned 7-bit numbers with a fixed
resolution of 0.063 g/LSB, corresponding to an 8g acceleration
full-scale range.
Default value: |
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Pulse Z-axis threshold
Threshold to start the pulse-event detection procedure on the Z-axis.
Threshold values for each axis are unsigned 7-bit numbers with a fixed
resolution of 0.063 g/LSB, corresponding to an 8g acceleration
full-scale range.
Default value: |
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Pulse time limit
The maximum time interval that can elapse between the start of the
acceleration on the selected channel exceeding the specified threshold
and the end when the channel acceleration goes back below the specified
threshold. The resolution depends upon the sample rate (ODR) and the
high-pass filter configuration (HP_FILTER_CUTOFF[pls_hpf_en]). For
ODR=800 Hz and pls_hpf_en=0, the resolution is 0.625 ms/LSB.
Default value: |
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Pulse latency
The time interval that starts after the first pulse detection where the
pulse-detection function ignores the start of a new pulse. The
resolution depends upon the sample rate (ODR) and the high-pass filter
configuration (HP_FILTER_CUTOFF[pls_hpf_en]). For ODR=800 Hz and
pls_hpf_en=0, the resolution is 1.25 ms/LSB.
Default value: |
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Pulse window
The maximum interval of time that can elapse after the end of the
latency interval in which the start of the second pulse event must be
detected provided the device has been configured for double pulse
detection. The detected second pulse width must be shorter than the
time limit constraint specified by the PULSE_TMLT register, but the end
of the double pulse need not finish within the time specified by the
PULSE_WIND register. The resolution depends upon the sample rate (ODR)
and the high-pass filter configuration (HP_FILTER_CUTOFF[pls_hpf_en]).
For ODR=800 Hz and pls_hpf_en=0, the resolution is 1.25 ms/LSB.
Default value: |
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Magnetic vector-magnitude configuration register
Default value: |
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Magnetic vector-magnitude threshold most significant byte.
Resolution is 0.1 uT/LSB.
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Magnetic vector-magnitude threshold least significant byte.
Resolution is 0.1 uT/LSB.
Default value: |
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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 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 “nxp,fxos8700” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
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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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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Power domain specifiers
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Provided names of power domain specifiers
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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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