From patchwork Fri Sep 13 13:57:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 13803472 Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) (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 C91EB1E0086 for ; Fri, 13 Sep 2024 13:58:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726235883; cv=none; b=L/ZjVDH8c3lBveUrZyvqamULqblFVjcXyazbkYV26U52Db3p0cAuWCKIRoxiNidnb102AhnOOUjR7fGeJqFJcQTX9YXTKSQ607py6hEBgutGCRSBQrPc/y7UKgdIXrNKrC9wuH00vBvBwy7WnHmSVwofODIYceOCmiaqnb4Er2I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726235883; c=relaxed/simple; bh=GQdyZWqzfnQT3hAZa3L+fZIM4t+AoyLa8IiB5e8peIs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WkuSNxHTgC/xM0bVV6Pxl9JhSvaO+EGY61l5X6PzbE+WK4x+WIki3RQF5htJg0+Z9q17V0DqbgQ+BadU7IMnJzhL4yQYq/kxVy8QNoK4tiP6z44B2Txfg98gAPjFWie6LwkIlvkThCfz1wyQnH9uBz3jFHMwUCpMD/aL8RHBoIo= 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=zAKV3ZPL; arc=none smtp.client-ip=209.85.221.48 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="zAKV3ZPL" Received: by mail-wr1-f48.google.com with SMTP id ffacd0b85a97d-374bd059b12so656001f8f.1 for ; Fri, 13 Sep 2024 06:58:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1726235880; x=1726840680; 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=G7id2uNYW2O+D+9KmRKjfLk5jRelw+ydc8eaTsKnZHc=; b=zAKV3ZPLLWbewRoFvPloAhbvijnkgbxV32M2cXzSfv+JADXNnsvTUdtmMSK7mKhzMS aav+9ilRrISfetLpPRfFzy1iBg8GjKDiDbxuMAkteIgmb7E5QeedyATvipa2m7o0cZl6 6EFglQGr7NhKCJc9X7t1Pluy38MsZOnLiaziZs3FX043HRNs4OdkE8VHPw/P+WooS0vB XlckFHjcumUkbO0cnwSuJq+m/fElBQDb9icjDYT8sKpmlgOku1TEaLs9NrtxCsVf0ctx am8kNC4bwuPGzCNL+qZ+yR3HJlsfGFDUoSPU5AnpH7cKblM+V6eiMVYa16pvS+89qIUd g0Mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726235880; x=1726840680; 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=G7id2uNYW2O+D+9KmRKjfLk5jRelw+ydc8eaTsKnZHc=; b=tHDYRZ8hrc6y+0wDTqIIuf6If9kfagDTs4PlAcSlauwLFPjH0bd5IkXJZmCXlDisGB VuM8p5PbGo5UeNZ7vKDwDNwhw/3wVYKErXzEVc6RuWgBmOWtisbBshRe+RGfdMwTiwxg B7WIxb6Le/M5AyhFbI6popldhH5FRV8Xon4J9s56YxExcvYMn00hnBv71Odh/73QEXJq I63Bo0z9i/+obUpEffvgARiNaLytZAYPPTZ/72JlbUgWTQe0gSq7bk0qLDkUmak2RaxX 9S+MFPkt0RqAMyQEYECV7xLNVFlwR2siWsPrjogg6V4NmUhckC1wGxOIhNOYjKLlgh2c cOlQ== X-Gm-Message-State: AOJu0YxsocHiy8kF+kgef/D9HTErySN5zSm0b5QEwqHodmr9LS3Fvt+3 UOxB08gq2xfKBVHHYdj1kOMH3nv9XVxDMWVrUCt3G5IrupQ6kdZv2roLMwV5VhFHtu+fCJfNeqD 3XE8= X-Google-Smtp-Source: AGHT+IEnMOy/us1WMCDm1uQTWUXvboHtKWEVOeATyWAagk22igiC4OpFI/i1oBSsRNFaX/qPXg4Mjg== X-Received: by 2002:a05:6000:1802:b0:374:c9cd:9bf4 with SMTP id ffacd0b85a97d-378d62537demr1697313f8f.52.1726235879673; Fri, 13 Sep 2024 06:57:59 -0700 (PDT) Received: from neptune.lan ([188.27.129.88]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-378956d3941sm17104749f8f.84.2024.09.13.06.57.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Sep 2024 06:57:59 -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, dlechner@baylibre.com, Alexandru Ardelean , Krzysztof Kozlowski Subject: [PATCH v6 7/8] dt-bindings: iio: adc: add docs for AD7606C-{16,18} parts Date: Fri, 13 Sep 2024 16:57:42 +0300 Message-ID: <20240913135744.152669-8-aardelean@baylibre.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240913135744.152669-1-aardelean@baylibre.com> References: <20240913135744.152669-1-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 Reviewed-by: Krzysztof Kozlowski Signed-off-by: Alexandru Ardelean --- .../bindings/iio/adc/adi,ad7606.yaml | 120 ++++++++++++++++++ 1 file changed, 120 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 69408cae3db9..bec7cfba52a7 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 +124,47 @@ properties: assumed that the pins are hardwired to VDD. type: boolean +patternProperties: + "^channel@[1-8]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + + properties: + reg: + description: + The channel number, as specified in the datasheet (from 1 to 8). + minimum: 1 + maximum: 8 + + diff-channels: + description: + Each channel can be configured as a bipolar differential channel. + The ADC uses the same positive and negative inputs for this. + This property must be specified as 'reg' (or the channel number) for + both positive and negative inputs (i.e. diff-channels = ). + Since the configuration is bipolar differential, the 'bipolar' + property is required. + items: + minimum: 1 + maximum: 8 + + bipolar: + description: + The ADC channels can be configured as + * Bipolar single-ended + * Unipolar single-ended + * Bipolar differential + Therefore in the DT, if no channel node is specified, it is considered + 'unipolar single-ended'. So for the other configurations the 'bipolar' + property must be specified. If 'diff-channels' is specified, it is + considered a bipolar differential channel. Otherwise it is bipolar + single-ended. + + required: + - reg + - bipolar + required: - compatible - reg @@ -170,6 +221,25 @@ allOf: adi,conversion-start-gpios: maxItems: 1 + - if: + not: + required: + - adi,sw-mode + then: + patternProperties: + "^channel@[1-8]$": false + + - if: + not: + properties: + compatible: + enum: + - adi,ad7606c-16 + - adi,ad7606c-18 + then: + patternProperties: + "^channel@[1-8]$": false + unevaluatedProperties: false examples: @@ -202,4 +272,54 @@ 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>; + bipolar; + }; + + channel@3 { + reg = <3>; + bipolar; + }; + + channel@8 { + reg = <8>; + diff-channels = <8 8>; + bipolar; + }; + + }; + }; ...