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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/iio/pressure/honeywell,mprls0025pa.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Honeywell mprls0025pa pressure sensor8 9maintainers:10 - Andreas Klinger <ak@it-klinger.de>11 - Petre Rodan <petre.rodan@subdimension.ro>12 13description: |14 Honeywell pressure sensor of model mprls0025pa.15 16 This sensor has an I2C and SPI interface.17 18 There are many models with different pressure ranges available. The vendor19 calls them "mpr series". All of them have the identical programming model and20 differ in the pressure range, unit and transfer function.21 22 To support different models one need to specify its pressure triplet as well23 as the transfer function.24 25 For custom silicon chips not covered by the Honeywell MPR series datasheet,26 the pressure values can be specified manually via honeywell,pmin-pascal and27 honeywell,pmax-pascal.28 The minimal range value stands for the minimum pressure and the maximum value29 also for the maximum pressure with linear relation inside the range.30 31 The transfer function defines the ranges of numerical values delivered by the32 sensor.33 34 Specifications about the devices can be found at:35 https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/36 products/sensors/pressure-sensors/board-mount-pressure-sensors/37 micropressure-mpr-series/documents/38 sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf39 40properties:41 compatible:42 const: honeywell,mprls0025pa43 44 reg:45 maxItems: 146 47 interrupts:48 description:49 Optional interrupt for indicating End-of-conversion.50 If not present, the driver loops for a while until the received status51 byte indicates correct measurement.52 maxItems: 153 54 reset-gpios:55 description:56 Optional GPIO for resetting the device.57 If not present the device is not reset during the probe.58 maxItems: 159 60 honeywell,transfer-function:61 description: |62 Transfer function which defines the range of valid values delivered by the63 sensor.64 1 - A, 10% to 90% of 2^24 (1677722 .. 15099494)65 2 - B, 2.5% to 22.5% of 2^24 (419430 .. 3774874)66 3 - C, 20% to 80% of 2^24 (3355443 .. 13421773)67 enum: [1, 2, 3]68 $ref: /schemas/types.yaml#/definitions/uint3269 70 honeywell,pressure-triplet:71 description: |72 Case-sensitive five character string that defines pressure range, unit73 and type as part of the device nomenclature. In the unlikely case of a74 custom chip, unset and provide pmin-pascal and pmax-pascal instead.75 enum: [0001BA, 01.6BA, 02.5BA, 0060MG, 0100MG, 0160MG, 0250MG, 0400MG,76 0600MG, 0001BG, 01.6BG, 02.5BG, 0100KA, 0160KA, 0250KA, 0006KG,77 0010KG, 0016KG, 0025KG, 0040KG, 0060KG, 0100KG, 0160KG, 0250KG,78 0015PA, 0025PA, 0030PA, 0001PG, 0005PG, 0015PG, 0030PG, 0300YG]79 $ref: /schemas/types.yaml#/definitions/string80 81 honeywell,pmin-pascal:82 description:83 Minimum pressure value the sensor can measure in pascal.84 85 honeywell,pmax-pascal:86 description:87 Maximum pressure value the sensor can measure in pascal.88 89 spi-max-frequency:90 maximum: 80000091 92 vdd-supply:93 description: provide VDD power to the sensor.94 95required:96 - compatible97 - reg98 - honeywell,transfer-function99 - vdd-supply100 101oneOf:102 - required:103 - honeywell,pressure-triplet104 - required:105 - honeywell,pmin-pascal106 - honeywell,pmax-pascal107 108allOf:109 - $ref: /schemas/spi/spi-peripheral-props.yaml110 - if:111 required:112 - honeywell,pressure-triplet113 then:114 properties:115 honeywell,pmin-pascal: false116 honeywell,pmax-pascal: false117 118additionalProperties: false119 120examples:121 - |122 #include <dt-bindings/gpio/gpio.h>123 #include <dt-bindings/interrupt-controller/irq.h>124 i2c {125 #address-cells = <1>;126 #size-cells = <0>;127 128 pressure@18 {129 compatible = "honeywell,mprls0025pa";130 reg = <0x18>;131 reset-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;132 interrupt-parent = <&gpio3>;133 interrupts = <21 IRQ_TYPE_EDGE_RISING>;134 135 honeywell,pressure-triplet = "0025PA";136 honeywell,transfer-function = <1>;137 vdd-supply = <&vcc_3v3>;138 };139 };140 - |141 spi {142 #address-cells = <1>;143 #size-cells = <0>;144 145 pressure@0 {146 compatible = "honeywell,mprls0025pa";147 reg = <0>;148 spi-max-frequency = <800000>;149 reset-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;150 interrupt-parent = <&gpio0>;151 interrupts = <30 IRQ_TYPE_EDGE_RISING>;152 153 honeywell,pressure-triplet = "0015PA";154 honeywell,transfer-function = <1>;155 vdd-supply = <&vcc_3v3>;156 };157 };158...159