From patchwork Thu Nov 23 15:23:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dumitru Ceclan X-Patchwork-Id: 747319 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="R61k97sp" Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3563CD43; Thu, 23 Nov 2023 07:23:38 -0800 (PST) Received: by mail-ed1-x52f.google.com with SMTP id 4fb4d7f45d1cf-5431614d90eso1436779a12.1; Thu, 23 Nov 2023 07:23:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700753016; x=1701357816; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=BLMaRNtmeOe3tEZqfnmo/Tb3QlfO/8+8xTr8EozY4WQ=; b=R61k97spLHqCoQf3X7cgMJH/5AKdybkNgDl7PWtLCcAT1s7miCIjxUqWgXjfL6ZpcG OUGL0jNMbym6LGsdpQaIZ0dxvg1D5Kvq5hCO9T9w1qpMt6NGJklev6nM6tczSzoP8rWg bNmzooNHmGo5yr3IFrPL9S6h32NTchAwsDe8H5GDL7xhLj65LqXNroFInVmnZH+zdp1O R07mapvVCOZIyibkfmv+CfUKOvaivbc9bm3g7J9YEkhvK1Vzjve7pRcMAReoUzv7497M Hsj52qEWsQaQs91RNvnIg7jNwGj0JuVoJMiyk1sthDfPLJLLZjbC8d1zFDqmDWeaq4iK /Ycg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700753016; x=1701357816; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=BLMaRNtmeOe3tEZqfnmo/Tb3QlfO/8+8xTr8EozY4WQ=; b=Dhl/+hypQfv5pIHdnG0Z7Ve4ANiOYg1YujBKGeJSiA173HK1O/FSsM/u+/KmdjdcIB wAedhK60dU8sVL+DlsKY3RKvAkwB09h6G6Pb3L702hDE2Ad7Inu5Wu4RBkiuRE3oKIz2 pPmTocV0SilLE8q/mfopokg6FwFrNmqCdmuL4Pu3QXYUckL9Jea+/j2OWTBWJNdf8fl/ ehnjoj+kKBVaBpl4K0+PbSWOIr8DJKCm6SrvJsn4TqYkpvzDKaKPFueNiCEZWgeq3Aoi EYV4GXj4jBhIJFNQpUTVxvU3tyJkyGDpMh2SHZAPxAeKVSZUGCppQ7fm53ndajbmkLeG RTcw== X-Gm-Message-State: AOJu0YxHIuMp0DzJEkodipW42Pj7s9yG1g7doyxDpMPRAjmEsFD9KeUo PmO/IiWHj8HwxZRbxxW+tX4= X-Google-Smtp-Source: AGHT+IFhvAoWJUpgF+ebzAvIpovp7flbvnXMNKnNOUjfiDgIp5Ai7GarunIV/4epWU2bTu3VjmpuyQ== X-Received: by 2002:a17:906:4146:b0:9d3:8d1e:cf0 with SMTP id l6-20020a170906414600b009d38d1e0cf0mr4657194ejk.54.1700753016381; Thu, 23 Nov 2023 07:23:36 -0800 (PST) Received: from HYB-hhAwRlzzMZb.ad.analog.com ([5.2.194.157]) by smtp.gmail.com with ESMTPSA id lg18-20020a170906f89200b009737b8d47b6sm893970ejb.203.2023.11.23.07.23.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Nov 2023 07:23:35 -0800 (PST) From: mitrutzceclan X-Google-Original-From: mitrutzceclan To: Cc: linus.walleij@linaro.org, brgl@bgdev.pl, andy@kernel.org, linux-gpio@vger.kernel.org, Lars-Peter Clausen , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Walle , Andy Shevchenko , Arnd Bergmann , ChiaEn Wu , Niklas Schnelle , =?utf-8?q?Leonard_G=C3=B6hrs?= , Mike Looijmans , Haibo Chen , Hugo Villeneuve , Ceclan Dumitru , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Dumitru Ceclan Subject: [PATCH v6 1/2] dt-bindings: adc: add AD7173 Date: Thu, 23 Nov 2023 17:23:21 +0200 Message-ID: <20231123152331.5751-1-user@HYB-hhAwRlzzMZb> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Dumitru Ceclan The AD7173 family offer a complete integrated Sigma-Delta ADC solution which can be used in high precision, low noise single channel applications or higher speed multiplexed applications. The Sigma-Delta ADC is intended primarily for measurement of signals close to DC but also delivers outstanding performance with input bandwidths out to ~10kHz. Signed-off-by: Dumitru Ceclan --- V5->V6 - Moved global required property to proper placement .../bindings/iio/adc/adi,ad7173.yaml | 178 ++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml new file mode 100644 index 000000000000..82e870122553 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -0,0 +1,178 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7173.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7173 ADC + +maintainers: + - Ceclan Dumitru + +description: | + Analog Devices AD717X ADC's. + + The AD717x family offer a complete integrated Sigma-Delta ADC solution which + can be used in high precision, low noise single channel applications (Life + Science measurements) or higher speed multiplexed applications (Factory Automation + PLC Input modules). The Sigma-Delta ADC is intended primarily for measurement + of signals close to DC but also delivers outstanding performance with input + bandwidths out to ~10kHz. + + Datasheets for supported chips: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-2.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7173-8.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7175-2.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7176-2.pdf + +properties: + compatible: + enum: + - adi,ad7172-2 + - adi,ad7173-8 + - adi,ad7175-2 + - adi,ad7176-2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + spi-max-frequency: + maximum: 20000000 + + refin-supply: + description: external reference supply, can be used as reference for conversion. + + refin2-supply: + description: external reference supply, can be used as reference for conversion. + + avdd-supply: + description: avdd supply, can be used as reference for conversion. + +patternProperties: + "^channel@[0-9a-f]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + + properties: + reg: + minimum: 0 + maximum: 15 + + diff-channels: + items: + minimum: 0 + maximum: 31 + + adi,reference-select: + description: | + Select the reference source to use when converting on + the specific channel. Valid values are: + refin : REFIN(+)/REFIN(−). + refin2 : REFIN2(+)/REFIN2(−) + refout-avss: REFOUT/AVSS (Internal reference) + avdd : AVDD + + External reference refin2 only available on ad7173-8. + If not specified, internal reference used. + enum: + - refin + - refin2 + - refout-avss + - avdd + default: refout-avss + + bipolar: + type: boolean + + required: + - reg + - diff-channels + +required: + - compatible + - reg + - interrupts + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + - if: + properties: + compatible: + not: + contains: + const: adi,ad7173-8 + then: + properties: + refin2-supply: false + patternProperties: + "^channel@[0-9a-f]$": + properties: + adi,reference-select: + enum: + - refin + - refout-avss + - avdd + +unevaluatedProperties: false + +examples: + - | + #include + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7173-8"; + reg = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + spi-max-frequency = <5000000>; + + channel@0 { + reg = <0>; + bipolar; + diff-channels = <0 1>; + }; + + channel@1 { + reg = <1>; + diff-channels = <2 3>; + }; + + channel@2 { + reg = <2>; + bipolar; + diff-channels = <4 5>; + }; + + channel@3 { + reg = <3>; + bipolar; + diff-channels = <6 7>; + }; + + channel@4 { + reg = <4>; + diff-channels = <8 9>; + }; + }; + };