From patchwork Sat Oct 14 21:12:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Mikhaylov X-Patchwork-Id: 734715 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 B1AB61BDE2 for ; Sat, 14 Oct 2023 21:13:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="l43NzB74" Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB86FD6; Sat, 14 Oct 2023 14:13:00 -0700 (PDT) Received: by mail-lf1-x134.google.com with SMTP id 2adb3069b0e04-50435ad51bbso4103185e87.2; Sat, 14 Oct 2023 14:13:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697317979; x=1697922779; 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=RJuOgt3q5HcDZrUvx1eiynZ1+P6CZ2zG/3oG/9FluxU=; b=l43NzB74BwNjd0g0EknT740CDTiHYy6J+OlN001SGZ9euOoxzZpgPpd+qMypvKD7FI K7SBNIFmctZfFZUKXYpq80TjpashojJYLWsRARdQv21QTg/SMXTzEzpLkAAH8c5QqtlP 15yWOa+x8tD2deXV2L9VEsKvbDP8j4CG0ACZRSLk0l2N5gSMKHhjnEeNPNO9axzC1X05 sygZFdZpT8R95ZhP4up0k0TDKrniYv66Ufyx27SqjzQdRpoboOrr8CV7rRuBngaiN+Cc mYVECX6M40mEmLkQGQd4NC5LVv1ACWCuoH6+SqMbllNqhJztI7qBJtoWayQZIOzOOYg1 ofeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697317979; x=1697922779; 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=RJuOgt3q5HcDZrUvx1eiynZ1+P6CZ2zG/3oG/9FluxU=; b=fChltFkXIpuTzP7o+QsyAz09+NjlyfAoJsh1KPTV/0PxT2pVRT82LZGeyAFKcMS3pf W5b6ioRKhEfBjoOhYimkGy5yUcxGr+SB1WDA4kgha/lCiywb+dPDnIxQ+Na38CYmLvOd BY2NIUsf1jmbZv48PLcaZdNFAyTsxMsuEPRNj+GmCfaSaCL/odQwyWE9NuddqqeeDILe UOS87+f+8cjaYQLy8ObbtMzaFzVe6bsZohQBniYUryKRsPEVNAwj+M8ozNAVkk/8uFNh VOcDRk0C/bSyyhRQN8FEAjMYjGpeTuu8OxPLFm7mmMyVqmzkjjxX7Y/plrh5NvhqMsIL 5/2g== X-Gm-Message-State: AOJu0YwSRlWObaFdrMgeOy2NqLI6jbyYWXUM0wCEPdcIl/8V6yVBY8EV 6ehTSFBA/oEadVPE+0FjuNI= X-Google-Smtp-Source: AGHT+IERGuljfrVvKKeO6a5Ryhqh62xtOe8gWzADmEc/5xJ22EfFyrWKLdvEQOCTxKXCBdN+HneGfg== X-Received: by 2002:a19:f516:0:b0:4fe:19ef:8791 with SMTP id j22-20020a19f516000000b004fe19ef8791mr22929664lfb.38.1697317978784; Sat, 14 Oct 2023 14:12:58 -0700 (PDT) Received: from fr.lan ([46.31.31.132]) by smtp.googlemail.com with ESMTPSA id g3-20020a056512118300b00507a9b2eff4sm78759lfr.22.2023.10.14.14.12.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Oct 2023 14:12:58 -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 v6 1/2] dt-bindings: adc: provide max34408/9 device tree binding document Date: Sun, 15 Oct 2023 00:12:53 +0300 Message-ID: <20231014211254.16719-2-fr0st61te@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231014211254.16719-1-fr0st61te@gmail.com> References: <20231014211254.16719-1-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_NONE,SPF_HELO_NONE,SPF_PASS 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 Reviewed-by: Conor Dooley --- .../bindings/iio/adc/maxim,max34408.yaml | 139 ++++++++++++++++++ 1 file changed, 139 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..4cba856e8d47 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml @@ -0,0 +1,139 @@ +# 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: Maxim MAX34408/MAX34409 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 + + powerdown-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 + + powerdown-status-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 + +patternProperties: + "^channel@[0-3]$": + $ref: adc.yaml + type: object + description: + Represents the internal channels of the ADC. + + properties: + reg: + items: + - minimum: 0 + maximum: 3 + + maxim,rsense-val-micro-ohms: + description: + Adjust the Rsense value to monitor higher or lower current levels for + input. + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, 500000] + default: 1000 + + required: + - reg + - maxim,rsense-val-micro-ohms + + unevaluatedProperties: false + +required: + - compatible + - reg + +allOf: + - if: + properties: + compatible: + contains: + const: maxim,max34408 + then: + patternProperties: + "^channel@[2-3]$": false + "^channel@[0-1]$": + properties: + reg: + maximum: 1 + else: + patternProperties: + "^channel@[0-3]$": + properties: + reg: + maximum: 3 + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + adc@1e { + compatible = "maxim,max34409"; + reg = <0x1e>; + powerdown-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; + powerdown-status-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>; + + #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>; + }; + }; + };