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Message-ID: <20231117164232.8474-1-petre.rodan@subdimension.ro>
Date: Fri, 17 Nov 2023 18:42:05 +0200
From: Petre Rodan <petre.rodan@...dimension.ro>
To: petre.rodan@...dimension.ro, linux-kernel@...r.kernel.org,
linux-iio@...r.kernel.org, devicetree@...r.kernel.org
Cc: Conor Dooley <conor+dt@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
linux-kernel-mentees@...ts.linuxfoundation.org,
Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH 1/2] dt-bindings: iio: pressure: add honeywell,hsc030
Adds binding for digital Honeywell TruStability HSC and SSC series
pressure and temperature sensors.
Datasheet:
[HSC] https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf
[SSC] https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-ssc-series/documents/sps-siot-trustability-ssc-series-standard-accuracy-board-mount-pressure-sensors-50099533-a-en-ciid-151134.pdf
Signed-off-by: Petre Rodan <petre.rodan@...dimension.ro>
---
.../iio/pressure/honeywell,hsc030pa.yaml | 166 ++++++++++++++++++
1 file changed, 166 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/pressure/honeywell,hsc0030pa.yaml
diff --git a/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml
new file mode 100644
index 000000000000..777710790696
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml
@@ -0,0 +1,166 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/pressure/honeywell,hsc030pa.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Honeywell TruStability HSC and SSC pressure sensor families
+
+maintainers:
+ - Petre Rodan <petre.rodan@...dimension.ro>
+
+description: |
+ support for Honeywell TruStability HSC and SSC digital pressure sensor
+ families.
+
+ These sensors have either an I2C, an SPI or an analog interface. Only the
+ digital versions are supported by this driver.
+
+ There are 118 models with different pressure ranges available in each family.
+ The vendor calls them "HSC series" and "SSC series". All of them have an
+ identical programming model but differ in pressure range, unit and transfer
+ function.
+
+ To support different models one need to specify the pressure range as well as
+ the transfer function. Pressure range can either be provided via range_str or
+ in case it's a custom chip via numerical range limits converted to pascals.
+
+ The transfer function defines the ranges of raw conversion values delivered
+ by the sensor. pmin-pascal and pmax-pascal corespond to the minimum and
+ maximum pressure that can be measured.
+
+ 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/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf
+ https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-ssc-series/documents/sps-siot-trustability-ssc-series-standard-accuracy-board-mount-pressure-sensors-50099533-a-en-ciid-151134.pdf
+
+properties:
+ compatible:
+ enum:
+ - honeywell,hsc
+ - honeywell,ssc
+
+ reg:
+ maxItems: 1
+
+ honeywell,transfer-function:
+ description: |
+ Transfer function which defines the range of valid values delivered by
+ the sensor.
+ 0 - A, 10% to 90% of 2^14
+ 1 - B, 5% to 95% of 2^14
+ 2 - C, 5% to 85% of 2^14
+ 3 - F, 4% to 94% of 2^14
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ honeywell,range_str:
+ description: |
+ Five character string that defines "pressure range, unit and type"
+ as part of the device nomenclature. In the unlikely case of a custom
+ chip, set to "NA" and provide honeywell,pmin-pascal honeywell,pmax-pascal
+ enum: [ "001BA", "1.6BA", "2.5BA", "004BA", "006BA", "010BA", "1.6MD",
+ "2.5MD", "004MD", "006MD", "010MD", "016MD", "025MD", "040MD",
+ "060MD", "100MD", "160MD", "250MD", "400MD", "600MD", "001BD",
+ "1.6BD", "2.5BD", "004BD", "2.5MG", "004MG", "006MG", "010MG",
+ "016MG", "025MG", "040MG", "060MG", "100MG", "160MG", "250MG",
+ "400MG", "600MG", "001BG", "1.6BG", "2.5BG", "004BG", "006BG",
+ "010BG", "100KA", "160KA", "250KA", "400KA", "600KA", "001GA",
+ "160LD", "250LD", "400LD", "600LD", "001KD", "1.6KD", "2.5KD",
+ "004KD", "006KD", "010KD", "016KD", "025KD", "040KD", "060KD",
+ "100KD", "160KD", "250KD", "400KD", "250LG", "400LG", "600LG",
+ "001KG", "1.6KG", "2.5KG", "004KG", "006KG", "010KG", "016KG",
+ "025KG", "040KG", "060KG", "100KG", "160KG", "250KG", "400KG",
+ "600KG", "001GG", "015PA", "030PA", "060PA", "100PA", "150PA",
+ "0.5ND", "001ND", "002ND", "004ND", "005ND", "010ND", "020ND",
+ "030ND", "001PD", "005PD", "015PD", "030PD", "060PD", "001NG",
+ "002NG", "004NG", "005NG", "010NG", "020NG", "030NG", "001PG",
+ "005PG", "015PG", "030PG", "060PG", "100PG", "150PG", "NA" ]
+ $ref: /schemas/types.yaml#/definitions/string
+
+ honeywell,pmin-pascal:
+ description: |
+ Minimum pressure value the sensor can measure in pascal.
+ To be specified only if honeywell,range_str is set to "NA".
+ $ref: /schemas/types.yaml#/definitions/int32
+
+ honeywell,pmax-pascal:
+ description: |
+ Maximum pressure value the sensor can measure in pascal.
+ To be specified only if honeywell,range_str is set to "NA".
+ $ref: /schemas/types.yaml#/definitions/int32
+
+ vdd-supply:
+ description: |
+ Provide VDD power to the sensor (either 3.3V or 5V depending on the chip).
+ Optional, activate only if required by the target board.
+
+ spi-max-frequency:
+ description: SPI clock to be kept between 50 and 800kHz
+
+ clock-frequency:
+ description: i2c clock to be kept between 100 and 400kHz
+
+required:
+ - compatible
+ - reg
+ - honeywell,transfer-function
+ - honeywell,range_str
+ - clock-frequency
+ - spi-max-frequency
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ status = "okay";
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ HSCMRNN030PA2A3@28 {
+ status = "okay";
+ compatible = "honeywell,hsc";
+ reg = <0x28>;
+ honeywell,transfer-function = <0>;
+ honeywell,range_str = "030PA";
+ honeywell,pmin-pascal = <0>;
+ honeywell,pmax-pascal = <206850>;
+
+ //vdd-supply = <&foo>;
+ };
+ };
+
+ spi {
+ # note that MOSI is not required by this sensor
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ channel@0{
+ status = "disabled";
+ reg = <0>;
+ };
+
+ HSCMLNN100PASA3@0 {
+ status = "okay";
+ compatible = "honeywell,hsc";
+ reg = <0>;
+ spi-max-frequency = <800000>;
+
+ honeywell,transfer-function = <0>;
+ honeywell,range_str = "100PA";
+
+ // in case of a custom range, use NA as range_str
+ // and populate pmin-pascal and pmax-pascal
+ // with the range limits converted into pascals
+ //honeywell,range_str = "NA";
+ //honeywell,pmin-pascal = <0>;
+ //honeywell,pmax-pascal = <206850>;
+
+ //vdd-supply = <&foo>;
+ };
+ };
+
--
2.41.0
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