From patchwork Thu Oct 5 18:55:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Mikhaylov X-Patchwork-Id: 730797 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 B6158405C4 for ; Thu, 5 Oct 2023 18:55:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fVBUtrrR" Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 039179B; Thu, 5 Oct 2023 11:55:55 -0700 (PDT) Received: by mail-lf1-x135.google.com with SMTP id 2adb3069b0e04-50435ad51bbso1686912e87.2; Thu, 05 Oct 2023 11:55:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696532153; x=1697136953; 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=W67NqH9c8zeb7HC14GCOy1jZno6eL79OOZCnPnFozWo=; b=fVBUtrrRZBDcLMpfLbzaCIXwp4cRr5ROZot8HY0BNDjOtPO+m9o+wEui233bsZf/Ww F4u0DWvmERwiGs2dWya8vSB71dXxWlBfDXy/PfLqDTMt9hiHRQQvx9dz82Y1+Em+KTsi r1cKJCKjMqmRbsbqyLp2tyKIirkFXua3Rd2BKTT/Is9T+FEvukkuExf/5c3x1La7e/ST uNBDJ1/qt9TdTau88SJiLVW1JOkA0E3+6BcD4V2s1h8HoXfs525oyS+Xd/bfGaoXXgof 95jqiOPiX2h0SJRSaa2Hr5PHU39iRjAycwDc/jmFD21o2jGhHI3CtjHHF5uaN2TF+1hi Hvxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696532153; x=1697136953; 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=W67NqH9c8zeb7HC14GCOy1jZno6eL79OOZCnPnFozWo=; b=IbMD/wi605mV9BAqtP5+0h1/14dbs7zIZxuTRC5MO8rxn2Bl8GAmzI8fjFzuHc5zbK MWdKCunCToejmxY9NC9hpyFNznYPkuNzIaSKG/HnwQ6kBOs8dZ49oA/aXINc5oDv87Ax +h/BLVCDW9ZaGKssBE5K5l3MSdiQQZzD/waDd2SzckRhkltLy+KRbJWe7S9v181GdiRi klgl2epkutdgLMk08o92lYvZlORg2lsSa7ysuwErX2COryUXhfm51/AxbOyW/8tbynlU p4CDIcFi4B3nBFBO+BOkGrd/JgtEcJJfyRUvTvmlK+g9LyfCOk/cnKTwRB07psWaLMGt aqew== X-Gm-Message-State: AOJu0YzuCoR8UV6IC9wWh0xxvvVpgdHVWJE1Xrwg/P8J0WgWB7FTrnRo /ZCyS+7ifrONmGUnrxbz4qyJMNmm9eWX0tf+ X-Google-Smtp-Source: AGHT+IE273ZU58hTX3fzcFP+u/5LTHAHOayTqd5BwlJ13vCU1g0gSyyLBl3CoyPb4eeW+cC8F3jxWg== X-Received: by 2002:a05:6512:2396:b0:500:8fcd:c3b5 with SMTP id c22-20020a056512239600b005008fcdc3b5mr7314730lfv.12.1696532153008; Thu, 05 Oct 2023 11:55:53 -0700 (PDT) Received: from fr.lan ([46.31.31.132]) by smtp.googlemail.com with ESMTPSA id q1-20020ac246e1000000b004fe48d0b639sm402341lfo.83.2023.10.05.11.55.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Oct 2023 11:55:52 -0700 (PDT) From: Ivan Mikhaylov To: Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Ivan Mikhaylov Subject: [PATCH v4 1/2] dt-bindings: adc: provide max34408/9 device tree binding document Date: Thu, 5 Oct 2023 21:55:36 +0300 Message-ID: <20231005185537.32267-2-fr0st61te@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231005185537.32267-1-fr0st61te@gmail.com> References: <20231005185537.32267-1-fr0st61te@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net The hardware binding for i2c current monitoring device with overcurrent control. Signed-off-by: Ivan Mikhaylov --- .../bindings/iio/adc/maxim,max34408.yaml | 137 ++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml new file mode 100644 index 000000000000..4262bedb4bfa --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml @@ -0,0 +1,137 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/maxim,max34408.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Two- and four-channel current monitors with overcurrent control + +maintainers: + - Ivan Mikhaylov + +description: | + The MAX34408/MAX34409 are two- and four-channel current monitors that are + configured and monitored with a standard I2C/SMBus serial interface. Each + unidirectional current sensor offers precision high-side operation with a + low full-scale sense voltage. The devices automatically sequence through + two or four channels and collect the current-sense samples and average them + to reduce the effect of impulse noise. The raw ADC samples are compared to + user-programmable digital thresholds to indicate overcurrent conditions. + Overcurrent conditions trigger a hardware output to provide an immediate + indication to shut down any necessary external circuitry. + + Specifications about the devices can be found at: + https://www.analog.com/media/en/technical-documentation/data-sheets/MAX34408-MAX34409.pdf + +properties: + compatible: + enum: + - maxim,max34408 + - maxim,max34409 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + shutdown-gpios: + description: + Shutdown Output. Open-drain output. This output transitions to high impedance + when any of the digital comparator thresholds are exceeded as long as the ENA + pin is high. + maxItems: 1 + + shtdn-enable-gpios: + description: + SHTDN Enable Input. CMOS digital input. Connect to GND to clear the latch and + unconditionally deassert (force low) the SHTDN output and reset the shutdown + delay. Connect to VDD to enable normal latch operation of the SHTDN output. + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + +patternProperties: + "^channel@[0-3]$": + $ref: adc.yaml + type: object + description: + Represents the internal channels of the ADC. + + properties: + reg: + items: + minimum: 0 + maximum: 3 + + maxim,rsense-val-micro-ohms: + description: + Adjust the Rsense value to monitor higher or lower current levels for + input. + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, 500000] + default: 1000 + + required: + - reg + - maxim,rsense-val-micro-ohms + + unevaluatedProperties: false + +allOf: + - if: + properties: + compatible: + contains: + const: maxim,max34408 + then: + patternProperties: + "^channel@[2-3]$": false + "^channel@[0-1]$": + properties: + reg: + minimum: 0 + maximum: 1 + else: + patternProperties: + "^channel@[0-3]$": + properties: + reg: + minimum: 0 + maximum: 3 + +additionalProperties: false + +examples: + - | + i2c { + + #address-cells = <1>; + #size-cells = <0>; + + adc@1e { + compatible = "maxim,max34409"; + reg = <0x1e>; + + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + reg = <0x0>; + maxim,rsense-val-micro-ohms = <5000>; + }; + + channel@1 { + reg = <0x1>; + maxim,rsense-val-micro-ohms = <10000>; + }; + }; + };