build/dts/api/bindings/sensor/st,lps22df-i3c.html · build/dts/api/bindings/sensor/st,lps22df-i3c.rst 공식 원문 ↗

Zephyr 3.7.0 · Devicetree · Sensor · STMicroelectronics

ST LPS22DF I3C Pressure and Temperature Sensor 바인딩

LPS22DF의 I3C dynamic address·ODR/LPF/averaging과 data-ready mode를 정의하는 33개 property schema입니다.

Official pathbuild/dts/api/bindings/sensor/st,lps22df-i3c.html
Source filebuild/dts/api/bindings/sensor/st,lps22df-i3c.rst
Source versionZephyr 3.7.0
TranslationFull · reviewed

본문 기준: Zephyr 3.7.0 LTS3 · 이후 유지보수 패치는 별도입니다.

Part 1

요약·해설

공식 원문 446줄과 property 33행을 전수 대조해 I3C assigned dynamic address·pressure/temperature filters·ODR power-down to 200Hz·active-high DRDY·absence of SPI mode properties 제약을 보존했습니다.

Compatible

st,lps22df

Vendor

STMicroelectronics

Properties

33 rows

Interface

I3C pressure/temperature sensor + dynamic address

Part 2

접을 수 있는 영어 원문 전체

영어 원문 전체 펼치기
원문 SHA-256 991CA623BD6B989D63D9839C50D24CCB497B8D606D9CDFB5273785BB38D46CB7
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.. _dtbinding_st_lps22df_i3c:

st,lps22df (on i3c bus)
#######################

Vendor: :ref:`STMicroelectronics <dt_vendor_st>`

Description
***********



.. code-block:: none

   STMicroelectronics LPS22DF pressure and temperature sensor connected to I3C
   bus

Properties
**********

.. tabs::

   .. group-tab:: Node specific properties

      Properties not inherited from the base binding file.

      .. list-table::
         :widths: 1 1 4
         :header-rows: 1

         * - Name
           - Type
           - Details

         * - ``supply-gpios``
           - ``phandle-array``
           - .. code-block:: none

                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``
           - .. code-block:: none

                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.



         * - ``assigned-address``
           - ``int``
           - .. code-block:: none

                Dynamic address to be assigned to the device.



         * - ``friendly-name``
           - ``string``
           - .. code-block:: none

                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).



         * - ``drdy-gpios``
           - ``phandle-array``
           - .. code-block:: none

                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.



         * - ``drdy-pulsed``
           - ``boolean``
           - .. code-block:: none

                Selects the pulsed mode for data-ready interrupt when enabled,
                and the latched mode when disabled.



         * - ``odr``
           - ``int``
           - .. code-block:: none

                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: ``0``, ``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``, ``8``

         * - ``lpf``
           - ``int``
           - .. code-block:: none

                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: ``0``, ``1``, ``3``

         * - ``avg``
           - ``int``
           - .. code-block:: none

                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: ``0``, ``1``, ``2``, ``3``, ``4``, ``5``, ``6``, ``7``



   .. group-tab:: Deprecated node specific properties

      Deprecated properties not inherited from the base binding file.

      (None)

   .. group-tab:: 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,lps22df" compatible.

      .. list-table::
         :widths: 1 1 4
         :header-rows: 1

         * - Name
           - Type
           - Details

         * - ``wakeup-source``
           - ``boolean``
           - .. code-block:: none

                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.



         * - ``power-domain``
           - ``phandle``
           - .. code-block:: none


                Power domain the device belongs to.

                The device will be notified when the power domain it belongs to is either
                suspended or resumed.



         * - ``zephyr,pm-device-runtime-auto``
           - ``boolean``
           - .. code-block:: none

                Automatically configure the device for runtime power management after the
                init function runs.



         * - ``zephyr,disabling-power-states``
           - ``phandles``
           - .. code-block:: none

                List of power states that will disable this device power.



         * - ``status``
           - ``string``
           - .. code-block:: none

                indicates the operational status of a device


             Legal values: ``'ok'``, ``'okay'``, ``'disabled'``, ``'reserved'``, ``'fail'``, ``'fail-sss'``

             See :ref:`dt-important-props` for more information.

         * - ``compatible``
           - ``string-array``
           - .. code-block:: none

                compatible strings


             This property is **required**.

             See :ref:`dt-important-props` for more information.

         * - ``reg``
           - ``array``
           - .. code-block:: none

                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 :ref:`dt-important-props` for more information.

         * - ``reg-names``
           - ``string-array``
           - .. code-block:: none

                name of each register space


         * - ``interrupts``
           - ``array``
           - .. code-block:: none

                interrupts for device


             See :ref:`dt-important-props` for more information.

         * - ``interrupts-extended``
           - ``compound``
           - .. code-block:: none

                extended interrupt specifier for device


         * - ``interrupt-names``
           - ``string-array``
           - .. code-block:: none

                name of each interrupt


         * - ``interrupt-parent``
           - ``phandle``
           - .. code-block:: none

                phandle to interrupt controller node


         * - ``label``
           - ``string``
           - .. code-block:: none

                Human readable string describing the device (used as device_get_binding() argument)



             See :ref:`dt-important-props` for more information.

             This property is **deprecated**.

         * - ``clocks``
           - ``phandle-array``
           - .. code-block:: none

                Clock gate information


         * - ``clock-names``
           - ``string-array``
           - .. code-block:: none

                name of each clock


         * - ``#address-cells``
           - ``int``
           - .. code-block:: none

                number of address cells in reg property


         * - ``#size-cells``
           - ``int``
           - .. code-block:: none

                number of size cells in reg property


         * - ``dmas``
           - ``phandle-array``
           - .. code-block:: none

                DMA channels specifiers


         * - ``dma-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of DMA channel specifiers


         * - ``io-channels``
           - ``phandle-array``
           - .. code-block:: none

                IO channels specifiers


         * - ``io-channel-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of IO channel specifiers


         * - ``mboxes``
           - ``phandle-array``
           - .. code-block:: none

                mailbox / IPM channels specifiers


         * - ``mbox-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of mailbox / IPM channel specifiers


         * - ``zephyr,deferred-init``
           - ``boolean``
           - .. code-block:: none

                Do not initialize device automatically on boot. Device should be manually
                initialized using device_init().






Part 3

한국어 전문 번역

st,lps22df

Vendor: STMicroelectronics

공식 설명

I3C bus에 연결한 STMicroelectronics LPS22DF pressure·temperature sensor

I3C dynamic address와 pressure/temperature sampling 설정

Base compatible·reg가 필수이고, assigned-address, filter, ODR, DRDY와 전원은 선택입니다.

I3C controller

Dynamic address assignment

LPS22DF

Pressure + temperature

Filters

LPF · 4~512 average

DRDY

Pulse or latch

assigned-address는 I3C device에 할당할 dynamic address입니다. I2C의 고정 address 설명이나 SPI frequency를 대신 넣지 않습니다.

ODR/LPF/AVG enum은 I2C/SPI variant와 같고, pressure-only LPF와 pressure·temperature 공통 averaging의 적용 범위도 동일합니다.

속성 전체 번역

공식 node-specific 9개와 base 24개 property를 모두 번역했습니다.

노드 전용 속성 · 9개
이름형식설명과 제약
supply-gpiosphandle-array장치 전용 전원 스위치를 제어하는 GPIO입니다. vin-supply와 함께 사용하면 먼저 레귤레이터에 전원 공급을 요청한 뒤 GPIO를 활성화합니다.
vin-supplyphandle공유 레귤레이터 노드의 phandle입니다. supply-gpios와 함께 사용하면 먼저 GPIO를 비활성화한 뒤 레귤레이터 사용을 해제합니다.
assigned-addressintI3C controller가 device에 할당할 dynamic address입니다.
friendly-namestring호스트 운영체제가 같은 모델의 센서 여러 개를 구분할 때 쓰는 이름입니다. HID Usage Tables 1.3의 22.5절에 정의되어 있습니다.
drdy-gpiosphandle-arrayLPS22DF DRDY pin 연결입니다. Sensor output은 기본 active-high이며 flags가 driver에 보이는 signal을 정확히 기술해야 합니다.
drdy-pulsedboolean설정하면 data-ready interrupt를 pulsed mode로, 설정하지 않으면 latched mode로 사용합니다.
odrintPressure/temperature output data rate code 0~8은 power-down, 1, 4, 10, 25, 50, 75, 100, 200Hz이며 생략하면 power-on reset 값을 사용합니다.
허용값: 0, 1, 2, 3, 4, 5, 6, 7, 8
lpfintPressure data에 적용할 low-pass filter입니다. Code 0은 off, 1은 ODR/4, 3은 ODR/9이며 code 2는 허용되지 않습니다.
허용값: 0, 1, 3
avgintPressure와 temperature data에 함께 적용할 평균 sample 수입니다. Code 0~7은 4/8/16/32/64/128/256/512 samples입니다.
허용값: 0, 1, 2, 3, 4, 5, 6, 7
Base binding property · 24개

공통 기본 바인딩에서 상속한 속성입니다. 이 compatible에서 사용하지 않는 속성도 공식 참조 문서에 실려 있으면 함께 표시합니다.

이름형식설명과 제약
wakeup-sourceboolean이 장치를 시스템 깨우기에 사용할 수 있음을 나타냅니다. 이 속성이 있으면 깨우기 지원 플래그가 설정됩니다. 기본 상태에서는 장치의 인터럽트로 시스템을 깨우지 않으며, 실행 중에 깨우기 기능을 활성화할 수 있습니다.
power-domainphandle장치가 속한 전원 도메인의 phandle입니다. 해당 전원 도메인이 일시 중단되거나 다시 동작하면 장치에 알림이 전달됩니다.
zephyr,pm-device-runtime-autoboolean초기화 함수 실행 후 장치의 런타임 전원 관리를 자동으로 설정합니다.
zephyr,disabling-power-statesphandles이 장치의 전원이 꺼지는 전원 상태 목록입니다.
statusstring장치의 동작 상태를 나타냅니다.
허용값: 'ok', 'okay', 'disabled', 'reserved', 'fail', 'fail-sss'
compatiblestring-array이 노드에 적용할 바인딩과 드라이버를 식별하는 compatible 문자열 목록입니다.
필수
regarray장치 레지스터의 주소 범위를 지정합니다.
필수
reg-namesstring-array각 register space의 이름입니다.
interruptsarray장치에서 사용하는 인터럽트를 지정하는 목록입니다.
interrupts-extendedcompound인터럽트 컨트롤러의 phandle을 함께 지정하는 확장 형식의 인터럽트 명세입니다.
interrupt-namesstring-array각 interrupt의 이름입니다.
interrupt-parentphandle인터럽트 컨트롤러 노드를 가리키는 phandle입니다.
labelstring사람이 장치를 알아볼 수 있도록 붙이는 이름입니다. 과거에는 device_get_binding()의 인자로 사용했습니다.
사용 중단됨
clocksphandle-array클록 게이트 또는 클록 공급원을 지정하는 phandle 배열입니다.
clock-namesstring-array각 clock의 이름입니다.
#address-cellsint하위 노드의 reg 속성에서 주소를 나타내는 데 쓰는 셀 수입니다.
#size-cellsint하위 노드의 reg 속성에서 크기를 나타내는 데 쓰는 셀 수입니다.
dmasphandle-arrayDMA 채널을 지정하는 phandle 배열입니다.
dma-namesstring-array지정한 DMA 채널의 이름입니다.
io-channelsphandle-arrayI/O 채널을 지정하는 phandle 배열입니다.
io-channel-namesstring-array지정한 I/O 채널의 이름입니다.
mboxesphandle-array메일박스/IPM 채널을 지정하는 phandle 배열입니다.
mbox-namesstring-array지정한 메일박스/IPM 채널의 이름입니다.
zephyr,deferred-initboolean부팅할 때 장치를 자동으로 초기화하지 않습니다. 이후 device_init()를 호출해 직접 초기화해야 합니다.

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