From patchwork Thu Sep 5 08:24:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 13791949 Received: from mail-ej1-f42.google.com (mail-ej1-f42.google.com [209.85.218.42]) (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 3E4C9198822 for ; Thu, 5 Sep 2024 08:24:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725524665; cv=none; b=UVNlmr7yo2t1WjsqJo0KxhR9lJaY2KoiaqZIZ4wbMlC2r3sAD+Ip5UhFA5Dz01HkZvqJot16sdVTrfpUI09swNdrlPokXJeo2y6q2YuBR3VW7+beKtt5bSM+tTNatvdHxFHbwtuDIh4T3crbVso7sRF1axGYiu0Y4B4I5k6nGWg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725524665; c=relaxed/simple; bh=8FC73oa/MEVkefisa/HgJYpYyiCAGwvKNzN6qaTlHSQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q4h6JwVgVGhJmlKCJTQYz573o23UCKcCYT2aYmCV2LicXk3YnGXYZFuOuP5w7IfMVlq+ggTyn19cB8bVwS1rqkfMD8B0VDXD4x2vqRTSmlHI1dhNf56HJx1VBcv7/udT8PSV7cwO1HsGz08qJ0c2r1EDcgsn7ZJWqf+q66Gnxpg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=FgC2of+e; arc=none smtp.client-ip=209.85.218.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="FgC2of+e" Received: by mail-ej1-f42.google.com with SMTP id a640c23a62f3a-a8684c31c60so78379866b.3 for ; Thu, 05 Sep 2024 01:24:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1725524661; x=1726129461; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=6E91591mSBml3TNwKKH/V0e8w+Xe8oeQd2rUoP5TY7c=; b=FgC2of+eXcyHWqeJ6B14BGgkFf4hdFQrGXVPtQEIObKR8/j8ahjBvQS3J5Uff1V9Yp uu+hJZ34Gfs2O6EP9dB1ajL8xEU1TJ8eVDHeoH9r9qo8TDa1y6dR2D0hD31WamkywiMD Y07VWlSEBf9S8asLORbcLcrZw/SybL9cPP05T6JkNzRqdqJbjsoBe0Uc0lRzPyAXdSom MMNWXJQ0+gWahap+m0hgTHH+8KjJe9eH5GyH+9MOXq01ICcTCAduHPDhspawBE0I3KLv T8dBcaoXqVw8gHrLAkm+syUepu5fVicePccYccgC52lPl/20sR9lb2uWGSxnheMZh9Je eEAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725524661; x=1726129461; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=6E91591mSBml3TNwKKH/V0e8w+Xe8oeQd2rUoP5TY7c=; b=poEEnW944IMgjFN1ivxlw00HaXaUYNYY9nJ6vbBhpnlxBBKmxVHSUYPguiDjB33dVM nUQRnkbYEBRcV/eFNvA2mXNW1zCFTM2C5OBPpGMJJRYS/6gvPGZnix+EQE/smGH1aYf4 /XIi8ZyZgu8l1vwcQn+Qks0VjQ097x9HrysKRSyjY9TDXBNdzqSknQRT8v+nspNa/8rm vVO3dUOej+PXkyCkwA8WhT0OAGAApj5nchIHnjd3KUpthkJ9W+/r43IeLsMHMFYuRGoD lt51n0P5SJckJu9/hVn3ww+OAQC40BCi/jkM3k85/BJSM9G+sH8yKdsdPr0dAfXsLNfj 8mzA== X-Gm-Message-State: AOJu0YxYbyF5VDivroba6eMuNKXIZVUew82valHrPfDAfwJ/mZsi0pgd v3d4J1NQm7gAKD0SeH55q5UDBR3cO0EbYHgczrsN29XVrogUT6bKz4sxb8WuxhFBgzH3tIccPdo Mwco= X-Google-Smtp-Source: AGHT+IEue6KQB0cxF3glXoNKRtA7TVZTKr6ANWpW3YsE7FVumztajZG9HSuommv6910riT26/HM/MQ== X-Received: by 2002:a17:907:9725:b0:a88:b90a:ff30 with SMTP id a640c23a62f3a-a897fa74dbcmr1786881366b.50.1725524661282; Thu, 05 Sep 2024 01:24:21 -0700 (PDT) Received: from localhost.localdomain ([188.27.130.242]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a8a623a6c80sm102300366b.174.2024.09.05.01.24.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Sep 2024 01:24:20 -0700 (PDT) From: Alexandru Ardelean To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: jic23@kernel.org, krzk+dt@kernel.org, robh@kernel.org, lars@metafoo.de, michael.hennerich@analog.com, gstols@baylibre.com, Alexandru Ardelean Subject: [PATCH v4 7/8] dt-bindings: iio: adc: add docs for AD7606C-{16,18} parts Date: Thu, 5 Sep 2024 11:24:01 +0300 Message-ID: <20240905082404.119022-8-aardelean@baylibre.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240905082404.119022-1-aardelean@baylibre.com> References: <20240905082404.119022-1-aardelean@baylibre.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The driver will support the AD7606C-16 and AD7606C-18. This change adds the compatible strings for these devices. The AD7606C-16,18 channels also support these (individually configurable) types of channels: - bipolar single-ended - unipolar single-ended - bipolar differential Signed-off-by: Alexandru Ardelean Reviewed-by: Krzysztof Kozlowski --- .../bindings/iio/adc/adi,ad7606.yaml | 109 ++++++++++++++++++ 1 file changed, 109 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 69408cae3db9..57537ab0ec82 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml @@ -14,6 +14,8 @@ description: | https://www.analog.com/media/en/technical-documentation/data-sheets/AD7605-4.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-16.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-18.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf properties: @@ -24,11 +26,19 @@ properties: - adi,ad7606-6 - adi,ad7606-8 # Referred to as AD7606 (without -8) in the datasheet - adi,ad7606b + - adi,ad7606c-16 + - adi,ad7606c-18 - adi,ad7616 reg: maxItems: 1 + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + spi-cpha: true spi-cpol: true @@ -114,6 +124,46 @@ properties: assumed that the pins are hardwired to VDD. type: boolean +patternProperties: + "^channel@[1-8]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + + properties: + reg: + description: + The channel number, as specified in the datasheet (from 1 to 8). + minimum: 1 + maximum: 8 + + diff-channels: + description: + Each channel can be configured as a differential bipolar channel. + The ADC uses the same positive and negative inputs for this. + This property must be specified as 'reg' (or the channel number) for + both positive and negative inputs (i.e. diff-channels = ). + items: + minimum: 1 + maximum: 8 + + bipolar: + description: + Each channel can be configured as a unipolar or bipolar single-ended. + When this property is not specified, it's unipolar, so the ADC will + have only the positive input wired. + For this ADC the 'diff-channels' & 'bipolar' properties are mutually + exclusive. + + required: + - reg + + oneOf: + - required: + - diff-channels + - required: + - bipolar + required: - compatible - reg @@ -170,6 +220,17 @@ allOf: adi,conversion-start-gpios: maxItems: 1 + - if: + not: + properties: + compatible: + enum: + - adi,ad7606c-16 + - adi,ad7606c-18 + then: + patternProperties: + "^channel@[1-8]$": false + unevaluatedProperties: false examples: @@ -202,4 +263,52 @@ examples: standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; }; }; + - | + #include + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7606c-18"; + reg = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + spi-max-frequency = <1000000>; + spi-cpol; + spi-cpha; + + avcc-supply = <&adc_vref>; + vdrive-supply = <&vdd_supply>; + + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + + adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>; + adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; + standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; + + adi,sw-mode; + + channel@1 { + reg = <1>; + diff-channels = <1 1>; + }; + + channel@3 { + reg = <3>; + bipolar; + }; + + channel@8 { + reg = <8>; + diff-channels = <8 8>; + }; + + }; + }; ...