From mboxrd@z Thu Jan 1 00:00:00 1970 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 156E6C00144 for ; Mon, 1 Aug 2022 04:48:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239586AbiHAEsS (ORCPT ); Mon, 1 Aug 2022 00:48:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239564AbiHAEsH (ORCPT ); Mon, 1 Aug 2022 00:48:07 -0400 Received: from wout4-smtp.messagingengine.com (wout4-smtp.messagingengine.com [64.147.123.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECA2713E39; Sun, 31 Jul 2022 21:48:04 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id A18873200033; Mon, 1 Aug 2022 00:48:00 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 01 Aug 2022 00:48:01 -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 :message-id:mime-version:reply-to:sender:subject:subject:to:to; s=fm1; t=1659329280; x=1659415680; bh=fAK6s3ZdE6AiXPO4P8BCPzpZX rbBn6incsq8p4u7UdE=; b=g1rNoQYNHJJtJoXQFi9U/xz9aJMXTcAs2QMEsys4B QcBzNNx7hR2i6cptRC37m5LZpeSC+LfG11MoiqXd7LpvMOPJuL0vjAw1ATVQPxl7 KJmxsI23EjNVa9pS5+iidZYpvpOlry1k4IUaSPv+4rKQY79npRWYvLfORp1aP4tU Su3CDF9GNOUm/a8IhEsILUJC5loOiCylxoZb4Xu1uyeUXwIshMo8fGnAVsMr+0d/ +f1MccEuuHEpn/H0nGp8CmPl4O2T/WaJmT/tTY1jSmnT6G/xdmpy3UXJV8GNhhhw KmDfJ8YuSB6VDKLDQI41qFTAgfPkDjWbV6pxHyrsWmAww== 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:message-id :mime-version:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1659329280; x=1659415680; bh=fAK6s3ZdE6AiXPO4P8BCPzpZXrbBn6incsq 8p4u7UdE=; b=goS6aVjfO+iS1ZlTdhBg8Yw1eJDutz7wBzgybSXTwW6MGFn17mD 7KuXfMiynnI30HoAoLoTbBfHGEhlXFdWU5WGTnIKsWLmA3a2W3jmjKEmiedeXbw5 OCMynmY3vqU65NiWHC60rwwzo+WpFoC3WiDeiiIOpQy5/fd3U8Dl0ObG3oINTuZ5 l3As+hZJgDhzfknlgqwrM9N6zMd2KLvKhTvon9yRTRnmCuYj18E9c93QTG+IU48b 9aQuvs1dhaxooBwy2dFDQBeKDOD2uBaOsCCjZ3NZaKrY87NjzqfusjukNIjzJv0w 2G/wBMzLXSThhvpmvVcxX3ut8gqL4z9tuLg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvddvvddgjeekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgggfestdekredtredttdenucfhrhhomhepufgrmhhuvghl ucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecuggftrf grthhtvghrnhepfeduffffueetveefudehueelgefgvdfffeelledtjeegudeiudehffdt jefhgefhnecuffhomhgrihhnpeguvghvihgtvghtrhgvvgdrohhrghenucevlhhushhtvg hrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsrghmuhgvlhesshhhohhl lhgrnhgurdhorhhg X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 1 Aug 2022 00:47:59 -0400 (EDT) From: Samuel Holland To: Liam Girdwood , Mark Brown , Chen-Yu Tsai , Jernej Skrabec , Krzysztof Kozlowski , Rob Herring Cc: Samuel Holland , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH 1/2] regulator: dt-bindings: Add Allwinner D1 LDOs Date: Sun, 31 Jul 2022 23:47:57 -0500 Message-Id: <20220801044758.12679-1-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 syscon exported by some "host" device node. Getting the register via a syscon avoids a dependency on the subsystem/ driver for that host device (e.g. a functioning thermal sensor should not depend on having the audio codec driver loaded). Signed-off-by: Samuel Holland --- .../allwinner,sun20i-d1-analog-ldos.yaml | 77 +++++++++++++++++++ .../allwinner,sun20i-d1-system-ldos.yaml | 55 +++++++++++++ 2 files changed, 132 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..df648c56123d --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml @@ -0,0 +1,77 @@ +# 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, + and so is exposed as a syscon. + +maintainers: + - Samuel Holland + +properties: + compatible: + enum: + - allwinner,sun20i-d1-analog-ldos + + nvmem-cells: + items: + - description: NVMEM cell for the calibrated bandgap reference trim value + + nvmem-cell-names: + items: + - const: bg_trim + + syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle of the device containing the power register + +patternProperties: + "^(aldo|hpldo)$": + type: object + $ref: regulator.yaml# + +required: + - compatible + - nvmem-cells + - nvmem-cell-names + - syscon + +unevaluatedProperties: false + +examples: + - | + sid: efuse { + #address-cells = <1>; + #size-cells = <1>; + + bg_trim: bg-trim@28 { + reg = <0x28 0x4>; + bits = <16, 8>; + }; + }; + + ldos-analog { + compatible = "allwinner,sun20i-d1-analog-ldos"; + nvmem-cells = <&bg_trim>; + nvmem-cell-names = "bg_trim"; + syscon = <&codec>; + + reg_aldo: aldo { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_hpldo: hpldo { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml new file mode 100644 index 000000000000..13b2e8c84f1d --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$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 controller MMIO space. + +maintainers: + - Samuel Holland + +properties: + compatible: + enum: + - allwinner,sun20i-d1-system-ldos + + syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle of the device containing the LDO control register + +patternProperties: + "^(ldoa|ldob)$": + type: object + $ref: regulator.yaml# + +required: + - compatible + - syscon + +unevaluatedProperties: false + +examples: + - | + ldos-system { + compatible = "allwinner,sun20i-d1-system-ldos"; + syscon = <&syscon>; + + reg_ldoa: ldoa { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + reg_ldob: ldob { + regulator-name = "vcc-dram"; + regulator-min-microvolt = <1500000>; + regulator-max-microvolt = <1500000>; + }; + }; + +... -- 2.35.1