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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/pressure/honeywell,mprls0025pa.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Honeywell mprls0025pa pressure sensor
+
+maintainers:
+ - Andreas Klinger <ak@it-klinger.de>
+ - Petre Rodan <petre.rodan@subdimension.ro>
+
+description: |
+ Honeywell pressure sensor of model mprls0025pa.
+
+ This sensor has an I2C and SPI interface.
+
+ There are many models with different pressure ranges available. The vendor
+ calls them "mpr series". All of them have the identical programming model and
+ differ in the pressure range, unit and transfer function.
+
+ To support different models one need to specify its pressure triplet as well
+ as the transfer function.
+
+ For custom silicon chips not covered by the Honeywell MPR series datasheet,
+ the pressure values can be specified manually via honeywell,pmin-pascal and
+ honeywell,pmax-pascal.
+ The minimal range value stands for the minimum pressure and the maximum value
+ also for the maximum pressure with linear relation inside the range.
+
+ The transfer function defines the ranges of numerical values delivered by the
+ sensor.
+
+ Specifications about the devices can be found at:
+ https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/
+ products/sensors/pressure-sensors/board-mount-pressure-sensors/
+ micropressure-mpr-series/documents/
+ sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
+
+properties:
+ compatible:
+ const: honeywell,mprls0025pa
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description:
+ Optional interrupt for indicating End-of-conversion.
+ If not present, the driver loops for a while until the received status
+ byte indicates correct measurement.
+ maxItems: 1
+
+ reset-gpios:
+ description:
+ Optional GPIO for resetting the device.
+ If not present the device is not reset during the probe.
+ maxItems: 1
+
+ honeywell,transfer-function:
+ description: |
+ Transfer function which defines the range of valid values delivered by the
+ sensor.
+ 1 - A, 10% to 90% of 2^24 (1677722 .. 15099494)
+ 2 - B, 2.5% to 22.5% of 2^24 (419430 .. 3774874)
+ 3 - C, 20% to 80% of 2^24 (3355443 .. 13421773)
+ enum: [1, 2, 3]
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ honeywell,pressure-triplet:
+ description: |
+ Case-sensitive five character string that defines pressure range, unit
+ and type as part of the device nomenclature. In the unlikely case of a
+ custom chip, unset and provide pmin-pascal and pmax-pascal instead.
+ enum: [0001BA, 01.6BA, 02.5BA, 0060MG, 0100MG, 0160MG, 0250MG, 0400MG,
+ 0600MG, 0001BG, 01.6BG, 02.5BG, 0100KA, 0160KA, 0250KA, 0006KG,
+ 0010KG, 0016KG, 0025KG, 0040KG, 0060KG, 0100KG, 0160KG, 0250KG,
+ 0015PA, 0025PA, 0030PA, 0001PG, 0005PG, 0015PG, 0030PG, 0300YG]
+ $ref: /schemas/types.yaml#/definitions/string
+
+ honeywell,pmin-pascal:
+ description:
+ Minimum pressure value the sensor can measure in pascal.
+
+ honeywell,pmax-pascal:
+ description:
+ Maximum pressure value the sensor can measure in pascal.
+
+ spi-max-frequency:
+ maximum: 800000
+
+ vdd-supply:
+ description: provide VDD power to the sensor.
+
+required:
+ - compatible
+ - reg
+ - honeywell,transfer-function
+ - vdd-supply
+
+oneOf:
+ - required:
+ - honeywell,pressure-triplet
+ - required:
+ - honeywell,pmin-pascal
+ - honeywell,pmax-pascal
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml
+ - if:
+ required:
+ - honeywell,pressure-triplet
+ then:
+ properties:
+ honeywell,pmin-pascal: false
+ honeywell,pmax-pascal: false
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pressure@18 {
+ compatible = "honeywell,mprls0025pa";
+ reg = <0x18>;
+ reset-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+ interrupt-parent = <&gpio3>;
+ interrupts = <21 IRQ_TYPE_EDGE_RISING>;
+
+ honeywell,pressure-triplet = "0025PA";
+ honeywell,transfer-function = <1>;
+ vdd-supply = <&vcc_3v3>;
+ };
+ };
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pressure@0 {
+ compatible = "honeywell,mprls0025pa";
+ reg = <0>;
+ spi-max-frequency = <800000>;
+ reset-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <30 IRQ_TYPE_EDGE_RISING>;
+
+ honeywell,pressure-triplet = "0015PA";
+ honeywell,transfer-function = <1>;
+ vdd-supply = <&vcc_3v3>;
+ };
+ };
+...