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 16F39C05027 for ; Wed, 15 Feb 2023 02:01:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232787AbjBOCBX (ORCPT ); Tue, 14 Feb 2023 21:01:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229536AbjBOCBT (ORCPT ); Tue, 14 Feb 2023 21:01:19 -0500 Received: from mg.richtek.com (mg.richtek.com [220.130.44.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3277423640; Tue, 14 Feb 2023 18:01:15 -0800 (PST) X-MailGates: (flag:4,DYNAMIC,BADHELO,RELAY,NOHOST:PASS)(compute_score:DE LIVER,40,3) Received: from 192.168.10.46 by mg.richtek.com with MailGates ESMTP Server V5.0(23451:0:AUTH_RELAY) (envelope-from ); Wed, 15 Feb 2023 10:00:59 +0800 (CST) Received: from ex3.rt.l (192.168.10.46) by ex3.rt.l (192.168.10.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.20; Wed, 15 Feb 2023 10:00:58 +0800 Received: from linuxcarl2.richtek.com (192.168.10.154) by ex3.rt.l (192.168.10.45) with Microsoft SMTP Server id 15.2.1118.20 via Frontend Transport; Wed, 15 Feb 2023 10:00:58 +0800 From: To: , , CC: , , , , Subject: [PATCH 1/2] dt-bindings: regulator: Add bindings for Richtek RT5739 Date: Wed, 15 Feb 2023 10:00:56 +0800 Message-ID: <1676426457-1389-2-git-send-email-cy_huang@richtek.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1676426457-1389-1-git-send-email-cy_huang@richtek.com> References: <1676426457-1389-1-git-send-email-cy_huang@richtek.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: ChiYuan Huang Add the binding document for Richtek RT5739. Signed-off-by: ChiYuan Huang --- .../bindings/regulator/richtek,rt5739.yaml | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml new file mode 100644 index 00000000..7dc4f78 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/richtek,rt5739.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/richtek,rt5739.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT5739 2.4MHz 3.5A Step-Down Converter + +maintainers: + - ChiYuan Huang + +description: | + The RT5739 is a step-down switching voltage regulator that delivers a + digitally programmable output from an input voltage supply of 2.5V to 5.5V. + The output voltage is programmed through an I2C interface capable of + operating up to 3.4MHz. + + Using a proprietary architecture with synchronous rectification, the RT5739 + is capable of delivering 3.5A continuously at over 80% efficiency, + maintaining that efficiency at load current as low as 10mA. The regulator + operates at a normal fixed frequency of 2.4MHz, which reduces the value of + the external components. Additional output capacitance can be added to + improve regulation during load transients without affecting stability. + +allOf: + - $ref: regulator.yaml# + +properties: + compatible: + enum: + - richtek,rt5739 + + reg: + maxItems: 1 + + enable-gpios: + maxItems: 1 + + richtek,vsel-active-high: + description: | + If property is present, use the 'VSEL1' register group for buck control. + Else, use the 'VSEL0' register group. This depends on external hardware + 'VSEL' pin connecton. + type: boolean + + regulator-allowed-modes: + description: | + buck allowed operating mode + 0: Auto PFM/PWM mode + 1: Forced PWM mode + maxItems: 2 + items: + enum: [0, 1] + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + regulator@50 { + compatible = "richtek,rt5739"; + reg = <0x50>; + enable-gpios = <&gpio26 1 GPIO_ACTIVE_HIGH>; + richtek,vsel-active-high; + regulator-name = "richtek,rt5739-buck"; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <13000000>; + regulator-allowed-modes = <0 1>; + regulator-boot-on; + }; + }; -- 2.7.4