From patchwork Fri Dec 15 13:34:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dumitru Ceclan X-Patchwork-Id: 754667 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) (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 36F5E2E650; Fri, 15 Dec 2023 13:35:18 +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="OIwPg1qC" Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-40c3f68b69aso6399235e9.1; Fri, 15 Dec 2023 05:35:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1702647317; x=1703252117; 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=NdRzbLVBinZmT2SXfjrgIshTPPMJ2URw9Mg0EHQOhg0=; b=OIwPg1qCOYsBX01++SC/AotVXB10ilNswWEVfkCBO45We1uueVvSSaOR2zs1Ml2pSn PTO7RGOOpuL8Yn8zjNpoQVzisaINg2a8XKf1PvmsOUW980yLB3y7Y+/S6LhwiZjYzhzv p2rq4Yt16FrBAXD9LxWzbrge032EreKYZ4ZlxIrfaGkIs1pDNdzjzO+NU2lBslxyJPmm E6+G98tzsmZvA+g8ze/VjZ9WKf2wBso/DaKRGUV4pfZTHrCaR1cZbLNsLNz/6ymqrXZv bQLKIn80CDA08dX1Jp8ippCvvaF60mLXnzcHO0dB24ED364PC6/gJF5kVS74+BiBMc+s 7wUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702647317; x=1703252117; 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=NdRzbLVBinZmT2SXfjrgIshTPPMJ2URw9Mg0EHQOhg0=; b=UIInAHH4f2gCqToKFlujzSdsgUtWC4FrOTCYGzgsNuGSpwkcaF10e1CR7Drt3zkQJ2 qwWTcmYx9Md1Z9LeU6wq8sXSddYA1miIpIf0XsVYt/aS8n9+8NxFLGT5eLEr/uH45DGM fsCaVkcjIrzC7mDw8eljVyuloQ0un5J+06Ld5vQ/OB2XUcwqrSY6nvxHzORNBmUY3jHv axRZr+uXD1DJ+beg8vmYE5VsVDtzvmf1cGE4lF1ppUBG6zSg1W7E/SwVbNcYmCpOYJRY M+zeEuCuCWr20wqJTIBFph+7YamVVAoCZAlk01ZD0pCFGvmCzlVlVPoAZqVp+krVEscI byAg== X-Gm-Message-State: AOJu0YyxwapUmyJ3whKy29TctzC5DngGS28IdZvoyLy2J37RPLjyNXIT 9cpOFMfS++VDefULyBnspKY= X-Google-Smtp-Source: AGHT+IG7DEX99rYBUpWNyVigcaMXPMhPY/2YlSiAMS7+XYxAOIWkNojFUA1gtLBWF4hSW3nvtUPElA== X-Received: by 2002:a7b:ca4e:0:b0:40b:442a:f589 with SMTP id m14-20020a7bca4e000000b0040b442af589mr6339762wml.18.1702647316790; Fri, 15 Dec 2023 05:35:16 -0800 (PST) Received: from HYB-hhAwRlzzMZb.ad.analog.com ([5.2.194.157]) by smtp.gmail.com with ESMTPSA id k9-20020adfb349000000b00336542b74c7sm1079603wrd.16.2023.12.15.05.35.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Dec 2023 05:35:16 -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 v9 1/2] dt-bindings: adc: add AD7173 Date: Fri, 15 Dec 2023 15:34:57 +0200 Message-ID: <20231215133512.28735-1-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 --- 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 | 184 ++++++++++++++++++ 1 file changed, 184 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..6b26481a4bdf --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -0,0 +1,184 @@ +# 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: 1 + + 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. + enum: + - refin + - refin2 + - refout-avss + - avdd + default: refout-avss + type: string + + 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; + + 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"; + }; + }; + };