On Tue, Nov 28, 2023 at 02:40:37PM +0200, Petre Rodan wrote: > Adds binding for digital Honeywell TruStability HSC and SSC series > pressure and temperature sensors. > Communication is one way. The sensor only requires 4 bytes worth of > clock pulses on both i2c and spi in order to push the data out. > The i2c address is hardcoded and depends on the part number. > There is no additional GPIO control. > > Datasheet: > 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 [HSC] > Datasheet: > 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 [SSC] > Signed-off-by: Petre Rodan <petre.rodan@xxxxxxxxxxxxxxx> > --- > V2: - fix yaml struct > - cleanup based on Krzysztof's review > V3: - rename range_str -> honeywell,pressure-triplet to define the string > containing the pressure range, measurement unit and type > - honeywell,pmax-pascal becomes uint32 > V4: - added enum to honeywell,transfer-function > --- > .../iio/pressure/honeywell,hsc030pa.yaml | 134 ++++++++++++++++++ > 1 file changed, 134 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.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..418fb1d2eefd > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml > @@ -0,0 +1,134 @@ > +# 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 series > + > +description: | > + support for Honeywell TruStability HSC and SSC digital pressure sensor > + series. > + > + 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 needs to specify the pressure range as well > + as the transfer function. Pressure range can either be provided via > + pressure-triplet (directly extracted from the part number) 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. > + > + Please note that in case of an SPI-based sensor, the clock signal should not > + exceed 800kHz and the MOSI signal is not required. > + > + 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 > + > +maintainers: > + - Petre Rodan <petre.rodan@xxxxxxxxxxxxxxx> > + > +properties: > + compatible: > + const: honeywell,hsc030pa > + > + 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 > + enum: [0, 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, set to "NA" and provide pmin-pascal and 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,pressure-triplet is set to "NA". This constraint can be expressed as: dependentSchemas: honeywell,pmin-pascal: properties: honeywell,pressure-triplet: const: NA And similar for honeywell,pmax-pascal > + $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,pressure-triplet is set to "NA". > + $ref: /schemas/types.yaml#/definitions/uint32
