From patchwork Mon Aug 15 04:34:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Holland X-Patchwork-Id: 597350 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 15DD5C00140 for ; Mon, 15 Aug 2022 04:34:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240751AbiHOEer (ORCPT ); Mon, 15 Aug 2022 00:34:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232772AbiHOEen (ORCPT ); Mon, 15 Aug 2022 00:34:43 -0400 Received: from wout1-smtp.messagingengine.com (wout1-smtp.messagingengine.com [64.147.123.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 942FF14D21; Sun, 14 Aug 2022 21:34:42 -0700 (PDT) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 1650C3200754; Mon, 15 Aug 2022 00:34:41 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Mon, 15 Aug 2022 00:34:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1660538080; x=1660624480; bh=ZS xEvGyrB6oDsjk8O9SkFaf2hh3bJF3tpg+kGnGDcDM=; b=I/QJe0JP656h626rPp o1Mjn/3punpiO398RO4DtHOsAT4+IPzySnt2SsP8haiSLnSEJWOsRKu1+fJu9472 HzE8/dWnp5Tr3Sa3fUPRq27Vr31qBr94IkL+PFHFczFMBuXSoGRWwmqdg0tKa+9l WopS3eS/+iv8QfVCAOVSx5uyIJVqP/sxmp+EhDKCnl9w4/U2f+IXupm7JAKPVaz3 ehu+YrccY9GsOGiQ8OTk+MtxtTXdZ4ep419ipy/gklxuu77OfcOgFfhFeJBxPHzE iEnEISlp0HI+qXM3v+Le/yHwJjGAfHkDDunTduD7QhGOnhoMnaEOkUGHgSASitd8 klFA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; t=1660538080; x=1660624480; bh=ZSxEvGyrB6oDs jk8O9SkFaf2hh3bJF3tpg+kGnGDcDM=; b=XxyxXqr16cYo0DvpvkXZm6Mejo0At rDJST+FmSc39aTRU7R6JjEUfkJowvVzoTXMruNgofff7kG2XiWNbfPB2fCgKWeX8 WVbXQkw4Q/A1Ho/Ny09cfJMh3+x0hHekBABkMfl2ejIYPHDOJ+dkaxa0SawtLiGq nGzWJWCaSLSjMu3Yuz1H4F/g7QMOTu2pnaB7Hiej8eU4IzlY6OaiVc5VAj4oH3lK ZEUH2kUAN2KAwfQC7cu7NI4OCBmIDKVE7xPhPwuJVTDlcVWPZQq4wcjftIF2lWhl 3SzdJSuYXMOomJppGIjcLBx5wsFBOYu+KQmREoD8SCNKtGy0BjfDXaI6w== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehuddgkeelucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepgffhvefhgfehjeehgfekheeuffegheffjeegheeuudeufeffhffh ueeihfeufffhnecuffhomhgrihhnpeguvghvihgtvghtrhgvvgdrohhrghenucevlhhush htvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsrghmuhgvlhesshhh ohhllhgrnhgurdhorhhg X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 15 Aug 2022 00:34:39 -0400 (EDT) From: Samuel Holland To: Liam Girdwood , Mark Brown , Chen-Yu Tsai , Jernej Skrabec , Krzysztof Kozlowski , Rob Herring Cc: Samuel Holland , Maxime Ripard , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH v3 1/4] regulator: dt-bindings: Add Allwinner D1 LDOs Date: Sun, 14 Aug 2022 23:34:32 -0500 Message-Id: <20220815043436.20170-2-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220815043436.20170-1-samuel@sholland.org> References: <20220815043436.20170-1-samuel@sholland.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The Allwinner D1 SoC contains two pairs of in-package LDOs. One pair is for general purpose use. LDOA generally powers the board's 1.8 V rail. LDOB generally powers the in-package DRAM, where applicable. The other pair of LDOs powers the analog power domains inside the SoC, including the audio codec, thermal sensor, and ADCs. These LDOs require a 0.9 V bandgap voltage reference. The calibration value for the voltage reference is stored in an eFuse, accessed via an NVMEM cell. Neither LDO control register is in its own MMIO range; instead, each regulator device relies on a regmap/syscon exported by its parent. Signed-off-by: Samuel Holland --- Changes in v3: - Add "reg" property to bindings - Add "unevaluatedProperties: true" to regulator nodes - Minor changes to regulator node name patterns - Remove system-ldos example (now added in patch 3) Changes in v2: - Remove syscon property from bindings - Update binding examples to fix warnings and provide context .../allwinner,sun20i-d1-analog-ldos.yaml | 74 +++++++++++++++++++ .../allwinner,sun20i-d1-system-ldos.yaml | 37 ++++++++++ 2 files changed, 111 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml create mode 100644 Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml diff --git a/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml new file mode 100644 index 000000000000..d6964b44ef21 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/allwinner,sun20i-d1-analog-ldos.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner D1 Analog LDOs + +description: + Allwinner D1 contains a set of LDOs which are designed to supply analog power + inside and outside the SoC. They are controlled by a register within the audio + codec MMIO space, but which is not part of the audio codec clock/reset domain. + +maintainers: + - Samuel Holland + +properties: + compatible: + enum: + - allwinner,sun20i-d1-analog-ldos + + reg: + maxItems: 1 + + nvmem-cells: + items: + - description: NVMEM cell for the calibrated bandgap reference trim value + + nvmem-cell-names: + items: + - const: bg_trim + +patternProperties: + "^(a|hp)ldo$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + - nvmem-cells + - nvmem-cell-names + +unevaluatedProperties: false + +examples: + - | + audio-codec@2030000 { + compatible = "simple-mfd", "syscon"; + reg = <0x2030000 0x1000>; + ranges; + #address-cells = <1>; + #size-cells = <1>; + + regulators@2030348 { + compatible = "allwinner,sun20i-d1-analog-ldos"; + reg = <0x2030348 0x4>; + nvmem-cells = <&bg_trim>; + nvmem-cell-names = "bg_trim"; + + reg_aldo: aldo { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_hpldo: hpldo { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml new file mode 100644 index 000000000000..e3e2810fb3d7 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/allwinner,sun20i-d1-system-ldos.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner D1 System LDOs + +description: + Allwinner D1 contains a pair of general-purpose LDOs which are designed to + supply power inside and outside the SoC. They are controlled by a register + within the system control MMIO space. + +maintainers: + - Samuel Holland + +properties: + compatible: + enum: + - allwinner,sun20i-d1-system-ldos + + reg: + maxItems: 1 + +patternProperties: + "^ldo[ab]$": + type: object + $ref: regulator.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + +unevaluatedProperties: false + +...