From patchwork Thu Dec 7 16:46:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petre Rodan X-Patchwork-Id: 751830 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b="pdufaVZe" Received: from mail.subdimension.ro (unknown [IPv6:2a01:7e01:e001:1d1::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6877110D1; Thu, 7 Dec 2023 08:47:41 -0800 (PST) Received: from localhost.localdomain (unknown [188.24.94.216]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.subdimension.ro (Postfix) with ESMTPSA id 96D1428EE6F; Thu, 7 Dec 2023 16:47:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=subdimension.ro; s=skycaves; t=1701967659; bh=Gtb+0owkXFeYs1nFwSaAIZKUGamCMAfqYYJIbP08rDg=; h=From:To:Cc:Subject:Date; b=pdufaVZepOM0QlVtfe3TlmudNasU2eiAHvZypW2DIsJ+5OdramSdzMKWLc5jd0tg8 X7YfdBk0Nefp6eMYcWBUd0f95gh5e96Un0c7I8b9BsaR07UXn/5ta8NMzKWrW8tCZp nn1G0TiSdw2ImubD9IZum2dSeYpd0uHMaHU8ldbo= From: Petre Rodan To: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: Petre Rodan , Conor Dooley , Lars-Peter Clausen , Rob Herring , linux-kernel-mentees@lists.linuxfoundation.org, Jonathan Cameron , Krzysztof Kozlowski Subject: [PATCH v8 1/2] dt-bindings: iio: pressure: add honeywell,hsc030 Date: Thu, 7 Dec 2023 18:46:28 +0200 Message-ID: <20231207164634.11998-1-petre.rodan@subdimension.ro> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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. driver is based on iio/togreg 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] Reviewed-by: Krzysztof Kozlowski Signed-off-by: Petre Rodan --- 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 v5: - removed pmin-pascal, pmax-pascal $ref - added pmin-pascal, pmax-pascal constraints v6: - no change v7: - no change v8: - no change, driver is now based on iio/togreg --- .../iio/pressure/honeywell,hsc030pa.yaml | 142 ++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml diff --git a/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml new file mode 100644 index 000000000000..65a24ed67b3c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml @@ -0,0 +1,142 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$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 + +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". + + 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". + + 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 + +dependentSchemas: + honeywell,pmin-pascal: + properties: + honeywell,pressure-triplet: + const: NA + honeywell,pmax-pascal: + properties: + honeywell,pressure-triplet: + const: NA + +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>; + }; + }; +...