From patchwork Wed Dec 20 10:48:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dumitru Ceclan X-Patchwork-Id: 757689 Received: from mail-lj1-f176.google.com (mail-lj1-f176.google.com [209.85.208.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 221CE21350; Wed, 20 Dec 2023 10:48:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GhlHKF+O" Received: by mail-lj1-f176.google.com with SMTP id 38308e7fff4ca-2cc6ea4452cso42597261fa.1; Wed, 20 Dec 2023 02:48:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703069300; x=1703674100; 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=ThNtIfnlIGuBL4u3+JKBWwmpRKYHrtqm+ZdySwo/r7Y=; b=GhlHKF+OxW4dR7KN5Usp75bDBaoGsqi95AV+yE7TzQOtFqGKvaMO9vnBD1TW0QZOQm S5x9/SoOCr29BsZsHV5GU/P4g7J8W3yhX8n6tqpE+uWApj0FFleHl47gzk0V0NhACdD6 5Dx+RqVBr4E2mdBPrm2qFEmFuJbkOBZBgaPkC4rpAVgQThxVBlkxjKO+Td/TolmyNIq0 wb+AZjv86Sr+4T8WIrgczsgMkisXZfGLV1zFaQYSCXIyO1Y/WjsB6/AwbhhMu3gPup/J YPhU7beY9dc9gbbYmhi407LP+4jZMFt+hqy1VZvyLgwhU+crNPjP3z/yrKZ5cUBzWc8a 1/iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703069300; x=1703674100; 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=ThNtIfnlIGuBL4u3+JKBWwmpRKYHrtqm+ZdySwo/r7Y=; b=hQasAyUWAmmnLA2S+dW9cnRCE6tSjYPQ2J6hR2Y+5JbuNBsxYx/2bkf1AZ8PZvgC93 7dgjJgItrnuBLiW7To8Bad/Q0B4NFXobhDiPoxayXy/TsukTGgpfKFXmQtOFFBDU3ARO FQX/Izzg8Z/vmRXLaEnPGasag2L2uJUtwk7SyPb0zDHQ1okpn5exx+Ty/3IJeRRG3bqB G+w4hoRin04ogemTpiVZV6xQGnGO1MTkAn4JugsVdEadf1giCaBUnRvrVkJU/AxFPiWa 86Pi2ZHDW02AKLdZEsgzF65hhOLQ4dS86FgwhIr6DgDj5EHY59v2TCG4zH1NFpIm6A96 ECdA== X-Gm-Message-State: AOJu0YwpoGN0Jp+E/jkjOxLazYUoTFlwgCzT03uA1jTp6Nl6GPGZR4Lp nhvvvL3uxghlaLxT6ZyKcG0= X-Google-Smtp-Source: AGHT+IG7dlKniwOxuWH6xHGqWIz/OdpfrFThiRi4i2YoF5zExz/Vi/LEw9ureDOZEvqmbm11j9Bilg== X-Received: by 2002:a05:651c:226:b0:2cc:769e:723d with SMTP id z6-20020a05651c022600b002cc769e723dmr1926964ljn.87.1703069299819; Wed, 20 Dec 2023 02:48:19 -0800 (PST) Received: from HYB-hhAwRlzzMZb.ad.analog.com ([5.2.193.82]) by smtp.gmail.com with ESMTPSA id x12-20020a5d650c000000b003366c058509sm1904063wru.23.2023.12.20.02.48.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Dec 2023 02:48:19 -0800 (PST) From: Dumitru Ceclan 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 v11 1/2] dt-bindings: adc: add AD7173 Date: Wed, 20 Dec 2023 12:48:04 +0200 Message-ID: <20231220104810.3179-1-mitrutzceclan@gmail.com> 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 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 Reviewed-by: Rob Herring --- V10->V11 - Fix example warning: '#gpio-cells' is a dependency of 'gpio-controller' - Add description to #gpio-cells property V9->V10 - Fix dt_binding_check type warning from adi,reference-select V8->v9 - Add gpio-controller and "#gpio-cells" properties - Add missing avdd2 and iovdd supplies - Add string type to reference-select V7->V8 - include missing fix from V6 V6->V7 V5->V6 - Moved global required property to proper placement V4 -> V5 - Use string enum instead of integers for "adi,reference-select" - Fix conditional checking in regards to compatible V3 -> V4 - include supply attributes - add channel attribute for selecting conversion reference V2 -> V3 - remove redundant descriptions - use referenced 'bipolar' property - remove newlines from example V1 -> V2 .../bindings/iio/adc/adi,ad7173.yaml | 188 ++++++++++++++++++ 1 file changed, 188 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..7c8caef76528 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -0,0 +1,188 @@ +# 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: | + Bindings for the Analog Devices AD717X ADC's. 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 + + gpio-controller: + description: Marks the device node as a GPIO controller. + + "#gpio-cells": + const: 2 + description: + The first cell is the GPIO number and the second cell specifies + GPIO flags, as defined in . + + 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. + + avdd2-supply: + description: avdd2 supply, used as the input to the internal voltage regulator. + + iovdd-supply: + description: iovdd supply, used for the chip digital interface. + +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. + $ref: /schemas/types.yaml#/definitions/string + enum: + - refin + - refin2 + - refout-avss + - avdd + default: refout-avss + + 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>; + gpio-controller; + #gpio-cells = <2>; + + refin-supply = <&dummy_regulator>; + + channel@0 { + reg = <0>; + bipolar; + diff-channels = <0 1>; + adi,reference-select = "refin"; + }; + + 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>; + adi,reference-select = "avdd"; + }; + }; + };