[PATCH v4 1/2] dt-bindings: iio: pressure: add honeywell,hsc030

[PATCH v4 1/2] dt-bindings: iio: pressure: add honeywell,hsc030

[Petre Rodan]

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@subdimension.ro>
---
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@subdimension.ro>
+
+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".
+    $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
+
+  vdd-supply:
+    description:
+      Provide VDD power to the sensor (either 3.3V or 5V depending on the chip)
+
+  spi-max-frequency:
+    maximum: 800000
+
+required:
+  - compatible
+  - reg
+  - honeywell,transfer-function
+  - honeywell,pressure-triplet
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pressure@28 {
+            compatible = "honeywell,hsc030pa";
+            reg = <0x28>;
+            honeywell,transfer-function = <0>;
+            honeywell,pressure-triplet = "030PA";
+        };
+    };
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pressure@0 {
+            compatible = "honeywell,hsc030pa";
+            reg = <0>;
+            spi-max-frequency = <800000>;
+            honeywell,transfer-function = <0>;
+            honeywell,pressure-triplet = "NA";
+            honeywell,pmin-pascal = <0>;
+            honeywell,pmax-pascal = <200000>;
+        };
+    };
+...
-- 
2.41.0

Re: [PATCH v4 1/2] dt-bindings: iio: pressure: add honeywell,hsc030

[Rob Herring]

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@subdimension.ro>
> ---
> 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@subdimension.ro>
> +
> +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

Re: [PATCH v4 1/2] dt-bindings: iio: pressure: add honeywell,hsc030

[kernel test robot]

Hi Petre,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on robh/for-next linus/master v6.7-rc3 next-20231128]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Petre-Rodan/iio-pressure-driver-for-Honeywell-HSC-SSC-series-pressure-sensors/20231128-204804
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20231128124042.22744-1-petre.rodan%40subdimension.ro
patch subject: [PATCH v4 1/2] dt-bindings: iio: pressure: add honeywell,hsc030
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231129/202311290346.3SedpbhM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311290346.3SedpbhM-lkp@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml: properties:honeywell,pmin-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
>> Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml: properties:honeywell,pmax-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: properties:honeywell,pmin-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: properties:honeywell,pmax-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#

-- 
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https://github.com/intel/lkp-tests/wiki