From patchwork Tue Mar 14 22:55:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 13175102 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B259C77B60 for ; Tue, 14 Mar 2023 22:55:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230200AbjCNWzp (ORCPT ); Tue, 14 Mar 2023 18:55:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231332AbjCNWzo (ORCPT ); Tue, 14 Mar 2023 18:55:44 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 953E439CC0; Tue, 14 Mar 2023 15:55:42 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 382E7B81BFF; Tue, 14 Mar 2023 22:55:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9900AC433D2; Tue, 14 Mar 2023 22:55:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678834539; bh=w+RHxqT9n38mgW/95l4s9XF2bsYwf020rGPTQmbmzcw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o09AGfXyvdqszwdCTVsMaIIPcjR9MQc0MNhPDsiMn2q2HEq4ZiqswaRkf+XdMqEgK 1tW5EQVBifPZC82jujAzTqlTNB8ITmNSal2dBccbT5oSjkZPPHfzhNTvBhMxEhHUhz Ta/tfimJWP3XoMo4rdt7RYPBt0cmpFA/5W4B0r99oOjAEQinZ83LbWE6trm1s2alYc HDSHMWaDcXUNw3PcoYoDZkZ+C1gQ1xiMY+4DiPzyMV5WrUhjj6gO9lJGSPNiXL81wz TuWiRnFJQgfiniUeupWwNV92u1SRlGQvsVHWxBHLlhZEvzidc5OVmpMyfK9ILdlZtK y9gyIUxza0YbA== Received: by mercury (Postfix, from userid 1000) id D35AA10605A2; Tue, 14 Mar 2023 23:55:36 +0100 (CET) From: Sebastian Reichel To: Sebastian Reichel Cc: Linus Walleij , Matti Vaittinen , Rob Herring , Krzysztof Kozlowski , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCHv2 01/12] dt-bindings: power: supply: adc-battery: add binding Date: Tue, 14 Mar 2023 23:55:24 +0100 Message-Id: <20230314225535.1321736-2-sre@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230314225535.1321736-1-sre@kernel.org> References: <20230314225535.1321736-1-sre@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add binding for a battery that is only monitored via ADC channels and simple status GPIOs. Signed-off-by: Sebastian Reichel Reviewed-by: Matti Vaittinen Reviewed-by: Krzysztof Kozlowski Reviewed-by: Linus Walleij --- .../bindings/power/supply/adc-battery.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/adc-battery.yaml diff --git a/Documentation/devicetree/bindings/power/supply/adc-battery.yaml b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml new file mode 100644 index 000000000000..ed9702caedff --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/adc-battery.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ADC battery + +maintainers: + - Sebastian Reichel + +description: + Basic battery capacity meter, which only reports basic battery data + via ADC channels and optionally indicate that the battery is full by + polling a GPIO line. + + The voltage is expected to be measured between the battery terminals + and mandatory. The optional current/power channel is expected to + monitor the current/power flowing out of the battery. Last but not + least the temperature channel is supposed to measure the battery + temperature. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + const: adc-battery + + charged-gpios: + description: + GPIO which signals that the battery is fully charged. The GPIO is + often provided by charger ICs, that are not software controllable. + maxItems: 1 + + io-channels: + minItems: 1 + maxItems: 4 + + io-channel-names: + minItems: 1 + items: + - const: voltage + - enum: [ current, power, temperature ] + - enum: [ power, temperature ] + - const: temperature + + monitored-battery: true + +required: + - compatible + - io-channels + - io-channel-names + - monitored-battery + +unevaluatedProperties: false + +examples: + - | + #include + + fuel-gauge { + compatible = "adc-battery"; + charged-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>; + io-channels = <&adc 13>, <&adc 37>; + io-channel-names = "voltage", "current"; + + power-supplies = <&charger>; + monitored-battery = <&battery>; + };