From patchwork Sat Jul 14 01:50:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Collins X-Patchwork-Id: 943866 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="lANB1iEO"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="h8MeS1O1"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41SCMN29Hxz9s29 for ; Sat, 14 Jul 2018 11:51:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731592AbeGNCIY (ORCPT ); Fri, 13 Jul 2018 22:08:24 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:47422 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729935AbeGNCIX (ORCPT ); Fri, 13 Jul 2018 22:08:23 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 9648A60B83; Sat, 14 Jul 2018 01:51:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1531533071; bh=X0/1GiKzpCR28Vnanq698e1V/dc7Xt7aLWgU/YBdV/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=lANB1iEOZBMCGQ7HbQNl2IBoI9Huo9tVibUJmI07oI+T1KuRCz8dPLgK0ewXVZQU7 cFeHZCHhjdxMSyl8Jjhm1wfTg5lg6GLujhQimvTtdiYpmPCkj45nw16EuAPkU/qn8X wCRf8NodzNmcwJfY8u3QjKcv/MHlwyoeJ/VIP25I= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from codeaurora.org (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: collinsd@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id F0B8D60541; Sat, 14 Jul 2018 01:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1531533070; bh=X0/1GiKzpCR28Vnanq698e1V/dc7Xt7aLWgU/YBdV/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=h8MeS1O1p65tZ92gfUhp8i28XmymVZsxKism8WFmf0GHTvY60ZMJHZDfLYtsCUGr8 zlZ1wsnjqcCDsVwp74yFOo7cWPvvjvZ7obJOxwPwf0bShIE1TjFIKxJjDSOVYr8fJm oDGk1+wFv2fDzpTXINASo4f+94+HGj4NtdSyg25E= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org F0B8D60541 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=collinsd@codeaurora.org From: David Collins To: broonie@kernel.org, lgirdwood@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: David Collins , linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, rnayak@codeaurora.org, sboyd@kernel.org, dianders@chromium.org, mka@chromium.org Subject: [PATCH v9 1/2] regulator: dt-bindings: add QCOM RPMh regulator bindings Date: Fri, 13 Jul 2018 18:50:58 -0700 Message-Id: <56b9d5c38cfe46da1228c54f001a49773c3e31dc.1531531808.git.collinsd@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Introduce bindings for RPMh regulator devices found on some Qualcomm Technlogies, Inc. SoCs. These devices allow a given processor within the SoC to make PMIC regulator requests which are aggregated within the RPMh hardware block along with requests from other processors in the SoC to determine the final PMIC regulator hardware state. Signed-off-by: David Collins Reviewed-by: Rob Herring Reviewed-by: Douglas Anderson --- .../bindings/regulator/qcom,rpmh-regulator.txt | 160 +++++++++++++++++++++ .../dt-bindings/regulator/qcom,rpmh-regulator.h | 36 +++++ 2 files changed, 196 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.txt create mode 100644 include/dt-bindings/regulator/qcom,rpmh-regulator.h diff --git a/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.txt b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.txt new file mode 100644 index 0000000..7ef2dbe --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/qcom,rpmh-regulator.txt @@ -0,0 +1,160 @@ +Qualcomm Technologies, Inc. RPMh Regulators + +rpmh-regulator devices support PMIC regulator management via the Voltage +Regulator Manager (VRM) and Oscillator Buffer (XOB) RPMh accelerators. The APPS +processor communicates with these hardware blocks via a Resource State +Coordinator (RSC) using command packets. The VRM allows changing three +parameters for a given regulator: enable state, output voltage, and operating +mode. The XOB allows changing only a single parameter for a given regulator: +its enable state. Despite its name, the XOB is capable of controlling the +enable state of any PMIC peripheral. It is used for clock buffers, low-voltage +switches, and LDO/SMPS regulators which have a fixed voltage and mode. + +======================= +Required Node Structure +======================= + +RPMh regulators must be described in two levels of device nodes. The first +level describes the PMIC containing the regulators and must reside within an +RPMh device node. The second level describes each regulator within the PMIC +which is to be used on the board. Each of these regulators maps to a single +RPMh resource. + +The names used for regulator nodes must match those supported by a given PMIC. +Supported regulator node names: + PM8998: smps1 - smps13, ldo1 - ldo28, lvs1 - lvs2 + PMI8998: bob + PM8005: smps1 - smps4 + +======================== +First Level Nodes - PMIC +======================== + +- compatible + Usage: required + Value type: + Definition: Must be one of: "qcom,pm8998-rpmh-regulators", + "qcom,pmi8998-rpmh-regulators" or + "qcom,pm8005-rpmh-regulators". + +- qcom,pmic-id + Usage: required + Value type: + Definition: RPMh resource name suffix used for the regulators found on + this PMIC. Typical values: "a", "b", "c", "d", "e", "f". + +- vdd-s1-supply +- vdd-s2-supply +- vdd-s3-supply +- vdd-s4-supply + Usage: optional (PM8998 and PM8005 only) + Value type: + Definition: phandle of the parent supply regulator of one or more of the + regulators for this PMIC. + +- vdd-s5-supply +- vdd-s6-supply +- vdd-s7-supply +- vdd-s8-supply +- vdd-s9-supply +- vdd-s10-supply +- vdd-s11-supply +- vdd-s12-supply +- vdd-s13-supply +- vdd-l1-l27-supply +- vdd-l2-l8-l17-supply +- vdd-l3-l11-supply +- vdd-l4-l5-supply +- vdd-l6-supply +- vdd-l7-l12-l14-l15-supply +- vdd-l9-supply +- vdd-l10-l23-l25-supply +- vdd-l13-l19-l21-supply +- vdd-l16-l28-supply +- vdd-l18-l22-supply +- vdd-l20-l24-supply +- vdd-l26-supply +- vin-lvs-1-2-supply + Usage: optional (PM8998 only) + Value type: + Definition: phandle of the parent supply regulator of one or more of the + regulators for this PMIC. + +- vdd-bob-supply + Usage: optional (PMI8998 only) + Value type: + Definition: BOB regulator parent supply phandle + +=============================== +Second Level Nodes - Regulators +=============================== + +- qcom,always-wait-for-ack + Usage: optional + Value type: + Definition: Boolean flag which indicates that the application processor + must wait for an ACK or a NACK from RPMh for every request + sent for this regulator including those which are for a + strictly lower power state. + +Other properties defined in Documentation/devicetree/bindings/regulator.txt +may also be used. regulator-initial-mode and regulator-allowed-modes may be +specified for VRM regulators using mode values from +include/dt-bindings/regulator/qcom,rpmh-regulator.h. regulator-allow-bypass +may be specified for BOB type regulators managed via VRM. +regulator-allow-set-load may be specified for LDO type regulators managed via +VRM. + +======== +Examples +======== + +#include + +&apps_rsc { + pm8998-rpmh-regulators { + compatible = "qcom,pm8998-rpmh-regulators"; + qcom,pmic-id = "a"; + + vdd-l7-l12-l14-l15-supply = <&pm8998_s5>; + + smps2 { + regulator-min-microvolt = <1100000>; + regulator-max-microvolt = <1100000>; + }; + + pm8998_s5: smps5 { + regulator-min-microvolt = <1904000>; + regulator-max-microvolt = <2040000>; + }; + + ldo7 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-initial-mode = ; + regulator-allowed-modes = + ; + regulator-allow-set-load; + }; + + lvs1 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + }; + + pmi8998-rpmh-regulators { + compatible = "qcom,pmi8998-rpmh-regulators"; + qcom,pmic-id = "b"; + + bob { + regulator-min-microvolt = <3312000>; + regulator-max-microvolt = <3600000>; + regulator-allowed-modes = + ; + regulator-initial-mode = ; + }; + }; +}; diff --git a/include/dt-bindings/regulator/qcom,rpmh-regulator.h b/include/dt-bindings/regulator/qcom,rpmh-regulator.h new file mode 100644 index 0000000..86713dc --- /dev/null +++ b/include/dt-bindings/regulator/qcom,rpmh-regulator.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2018, The Linux Foundation. All rights reserved. */ + +#ifndef __QCOM_RPMH_REGULATOR_H +#define __QCOM_RPMH_REGULATOR_H + +/* + * These mode constants may be used to specify modes for various RPMh regulator + * device tree properties (e.g. regulator-initial-mode). Each type of regulator + * supports a subset of the possible modes. + * + * %RPMH_REGULATOR_MODE_RET: Retention mode in which only an extremely small + * load current is allowed. This mode is supported + * by LDO and SMPS type regulators. + * %RPMH_REGULATOR_MODE_LPM: Low power mode in which a small load current is + * allowed. This mode corresponds to PFM for SMPS + * and BOB type regulators. This mode is supported + * by LDO, HFSMPS, BOB, and PMIC4 FTSMPS type + * regulators. + * %RPMH_REGULATOR_MODE_AUTO: Auto mode in which the regulator hardware + * automatically switches between LPM and HPM based + * upon the real-time load current. This mode is + * supported by HFSMPS, BOB, and PMIC4 FTSMPS type + * regulators. + * %RPMH_REGULATOR_MODE_HPM: High power mode in which the full rated current + * of the regulator is allowed. This mode + * corresponds to PWM for SMPS and BOB type + * regulators. This mode is supported by all types + * of regulators. + */ +#define RPMH_REGULATOR_MODE_RET 0 +#define RPMH_REGULATOR_MODE_LPM 1 +#define RPMH_REGULATOR_MODE_AUTO 2 +#define RPMH_REGULATOR_MODE_HPM 3 + +#endif