From patchwork Mon May 27 17:02:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dumitru Ceclan via B4 Relay X-Patchwork-Id: 13675648 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D6EE15A85F; Mon, 27 May 2024 17:02:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716829361; cv=none; b=hPfUldLlm07hVaV3vwQwCnC+WthLYYnSN62xQzETz3thQ0vkLwTV7yy7qV9YUuVUr0y6W6eauwU3Sbp0XAFiY4LsFKbKAKrWkv0LRHzSVxDiFvIgrI6Dwyq78paue6YeFnqGJWJJUkBIIOC51dGn3KVcWkfJJBXEAj/nPM8/Rd0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716829361; c=relaxed/simple; bh=D7HFm8AUG04VbQUyxVJr0WSk84Tg1GR+2fxXqZXdOxk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=t4XLLFDp3mV1mrMvwCkhTMK6IEYuiNdpkb/8eNkkVDGsap5sc7uqETlEfduLpP9nvmXLVw/PQKUKTEsQKkYBLopFVYnYmcQNGLxQvWo8u8U1rSWRr9gs0JkjS8hka+CogvBBCYvlyEdnop/PgjPBFCS2s7N3pyf1CPAWvUB4gYw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AYrkYm70; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AYrkYm70" Received: by smtp.kernel.org (Postfix) with ESMTPS id AE90CC4AF08; Mon, 27 May 2024 17:02:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716829360; bh=D7HFm8AUG04VbQUyxVJr0WSk84Tg1GR+2fxXqZXdOxk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=AYrkYm706wBpzhQ/gBLERTvpox3so1JMZSWIx4qSi2A5XhmcfE7MV7pm88aEvukyU aVEsRNHOpNHtTmpO7TVGWds3Zxb6XBHVYf0SAFCxojzACKgoa8wOGtMBzJcxaayWxP 1/MklMOiOx5sN6aYa5bJaUPxOWVP7lL6EUl0T6lGQQPSjNFXowvKFndHerv8pMx7p+ Hv/3GwP6vbxzZa+k7wVW6NCgmf2zdgTH/hF/azMuCzzOkH6R8osPb+ZiBXflZ6Ax9n qQuy38zRnrTJPggXNtydUDFF17G+8+zgqVUExkZkY7UmUm8mBxWJxDEA7DDbB7FyMh x0ZIOXChRhatw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97412C25B78; Mon, 27 May 2024 17:02:40 +0000 (UTC) From: Dumitru Ceclan via B4 Relay Date: Mon, 27 May 2024 20:02:34 +0300 Subject: [PATCH v3 1/6] dt-bindings: adc: ad7173: add support for ad411x Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240527-ad4111-v3-1-7e9eddbbd3eb@analog.com> References: <20240527-ad4111-v3-0-7e9eddbbd3eb@analog.com> In-Reply-To: <20240527-ad4111-v3-0-7e9eddbbd3eb@analog.com> To: Ceclan Dumitru Cc: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , David Lechner , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Dumitru Ceclan X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1716829358; l=6275; i=dumitru.ceclan@analog.com; s=20240313; h=from:subject:message-id; bh=1wlr2he6NWLwHETQMfKvuBxqnB76wNWQ32VnB84HEfw=; b=vTzxYkwa9zI0HtMfB9xsqifGgN/WZjj48pt+23AfJ+HUyWSFb24JLQQP5ljYv+04azI5NtDMi hZ1UKXZLrFtB1N3DEgAziWJscJb3SKX0moKipQWtfG/YMHFjsMGkxVU X-Developer-Key: i=dumitru.ceclan@analog.com; a=ed25519; pk=HdqMlVyrcazwoiai7oN6ghU+Bj1pusGUFRl30jhS7Bo= X-Endpoint-Received: by B4 Relay for dumitru.ceclan@analog.com/20240313 with auth_id=140 X-Original-From: Dumitru Ceclan Reply-To: dumitru.ceclan@analog.com From: Dumitru Ceclan Add support for: AD4111, AD4112, AD4114, AD4115, AD4116. AD411x family ADCs support a VCOM pin, dedicated for single-ended usage. AD4111/AD4112 support current channels, usage is implemented by specifying channel reg values bigger than 15. Signed-off-by: Dumitru Ceclan --- .../devicetree/bindings/iio/adc/adi,ad7173.yaml | 122 ++++++++++++++++++++- 1 file changed, 120 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml index ea6cfcd0aff4..5b1af382dad3 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -19,7 +19,18 @@ description: | primarily for measurement of signals close to DC but also delivers outstanding performance with input bandwidths out to ~10kHz. + Analog Devices AD411x ADC's: + The AD411X family encompasses a series of low power, low noise, 24-bit, + sigma-delta analog-to-digital converters that offer a versatile range of + specifications. They integrate an analog front end suitable for processing + fully differential/single-ended and bipolar voltage inputs. + Datasheets for supported chips: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4111.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4112.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4114.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4115.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4116.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-2.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-4.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/AD7173-8.pdf @@ -31,6 +42,11 @@ description: | properties: compatible: enum: + - adi,ad4111 + - adi,ad4112 + - adi,ad4114 + - adi,ad4115 + - adi,ad4116 - adi,ad7172-2 - adi,ad7172-4 - adi,ad7173-8 @@ -129,10 +145,36 @@ patternProperties: maximum: 15 diff-channels: + description: | + For using current channels specify select the current inputs + and enable the adi,current-channel property. + + Family AD411x supports a dedicated VINCOM voltage input. + To select it set the second channel to 16. + (VIN2, VINCOM) -> diff-channels = <2 16> + + There are special values that can be selected besides the voltage + analog inputs: + 21: REF+ + 22: REF− + Supported only by AD7172-2, AD7172-4, AD7175-2, AD7175-8, AD7177-2: + 19: ((AVDD1 − AVSS)/5)+ + 20: ((AVDD1 − AVSS)/5)− + items: minimum: 0 maximum: 31 + single-channel: + description: | + Models AD4111 and AD4112 support single-ended current channels. + To select the desired current input, specify the desired input pair: + (IIN2+, IIN2−) -> single-channel = <2> + + items: + minimum: 1 + maximum: 16 + adi,reference-select: description: | Select the reference source to use when converting on @@ -154,9 +196,26 @@ patternProperties: - avdd default: refout-avss + adi,current-channel: + description: | + Signal that the selected inputs are current channels. + Only available on AD4111 and AD4112. + type: boolean + + adi,channel-type: + description: + Used to differentiate between different channel types as the device + register configurations are the same for all usage types. + Both pseudo-differential and single-ended channels will use the + single-ended specifier. + $ref: /schemas/types.yaml#/definitions/string + enum: + - single-ended + - differential + default: differential + required: - reg - - diff-channels required: - compatible @@ -166,7 +225,6 @@ allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# # Only ad7172-4, ad7173-8 and ad7175-8 support vref2 - # Other models have [0-3] channel registers - if: properties: compatible: @@ -187,6 +245,37 @@ allOf: - vref - refout-avss - avdd + + - if: + properties: + compatible: + contains: + enum: + - adi,ad4114 + - adi,ad4115 + - adi,ad4116 + - adi,ad7173-8 + - adi,ad7175-8 + then: + patternProperties: + "^channel@[0-9a-f]$": + properties: + reg: + maximum: 15 + + - if: + properties: + compatible: + contains: + enum: + - adi,ad7172-2 + - adi,ad7175-2 + - adi,ad7176-2 + - adi,ad7177-2 + then: + patternProperties: + "^channel@[0-9a-f]$": + properties: reg: maximum: 3 @@ -210,6 +299,35 @@ allOf: required: - adi,reference-select + - if: + properties: + compatible: + contains: + enum: + - adi,ad4111 + - adi,ad4112 + - adi,ad4114 + - adi,ad4115 + - adi,ad4116 + then: + properties: + avdd2-supply: false + + - if: + properties: + compatible: + not: + contains: + enum: + - adi,ad4111 + - adi,ad4112 + then: + patternProperties: + "^channel@[0-9a-f]$": + properties: + single-channel: false + adi,current-channel: false + - if: anyOf: - required: [clock-names]