From patchwork Tue Apr 6 11:18:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 12184925 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82520C43462 for ; Tue, 6 Apr 2021 11:18:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5504A613D7 for ; Tue, 6 Apr 2021 11:18:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241758AbhDFLSx (ORCPT ); Tue, 6 Apr 2021 07:18:53 -0400 Received: from mail-lj1-f179.google.com ([209.85.208.179]:42921 "EHLO mail-lj1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233073AbhDFLSx (ORCPT ); Tue, 6 Apr 2021 07:18:53 -0400 Received: by mail-lj1-f179.google.com with SMTP id 184so16026576ljf.9; Tue, 06 Apr 2021 04:18:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=y6KN1yvMUC75bkbUQTV1YWqmuCmx6jslNM3ZAzekHIU=; b=GinSvUtRRCTITq+tVn7GZWzCucLt+NkhUdAchZMYbrYNcTTz+ksnQF5AfbDfvnTS4F C2BGkrjEa9Vg01zbkpmaEILoCAVNNFHOzj88Fy9jA7FuyJ4hOSIq0qhg94IODBkf+cgA ArG9GspQXdEMNxuVmPZHsSDp7s6HI3sEEcSnZXDOZD8ruBAth0KkSk6MqNPKU7V78pia ynJdlBrB4rGjQ2pjUYGBm9YkXZ2i1PNkK+k+FIBKegWDNr72Rrn6Bz4QNoFdnjuMmXZh YbylLMSG7tJfPuhg5+S/zUGckXnyNdQ5xuRdi126VW+0bivX2lqhvwMOFvMNOuvbTmvQ 1BGQ== X-Gm-Message-State: AOAM531dfAEU3bWfNq7FY+QpLCIpC6qfWy7vqoMiLquqXHPS7L4v2uRz FXOCuiWdc8b0TM5LXPsj/WA= X-Google-Smtp-Source: ABdhPJz/X3hwiwh1jQKk5l+LcOnF29TBkkKKRmbzKuywC1IyumEt52NtZAAtgwlYKOFVMirop8zpZw== X-Received: by 2002:a2e:9cc4:: with SMTP id g4mr18812765ljj.34.1617707923233; Tue, 06 Apr 2021 04:18:43 -0700 (PDT) Received: from localhost.localdomain (dc7vkhyyyyyyyyyyyyydy-3.rev.dnainternet.fi. [2001:14ba:16e2:8300::6]) by smtp.gmail.com with ESMTPSA id b17sm2120719lfi.57.2021.04.06.04.18.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Apr 2021 04:18:42 -0700 (PDT) Date: Tue, 6 Apr 2021 14:18:37 +0300 From: Matti Vaittinen To: Matti Vaittinen , Matti Vaittinen Cc: Liam Girdwood , Mark Brown , Rob Herring , Matti Vaittinen , Andy Gross , Bjorn Andersson , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-power@fi.rohmeurope.com, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v5 1/7] dt_bindings: Add protection limit properties Message-ID: <6c60d828446bf0568649244399f4c37db611d9a1.1617707724.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Support specifying protection/error/warning limits for regulator over current, over temperature and over/under voltage. Most of the PMICs support only "protection" feature but few setups do also support error/warning level indications. On many ICs most of the protection limits can't actually be set. But for example the ampere limit for over-current protection on ROHM BD9576 can be configured - or feature can be completely disabled. Provide limit setting for all protections/errors for the sake of the completeness and do that using own properties for all so that not all users would need to set all levels when only one or few are supported. Signed-off-by: Matti Vaittinen Reviewed-by: Rob Herring --- No changes since RFC-v2 .../bindings/regulator/regulator.yaml | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/regulator.yaml b/Documentation/devicetree/bindings/regulator/regulator.yaml index 6d0bc9cd4040..a6ae9ecae5cc 100644 --- a/Documentation/devicetree/bindings/regulator/regulator.yaml +++ b/Documentation/devicetree/bindings/regulator/regulator.yaml @@ -117,6 +117,88 @@ properties: description: Enable over current protection. type: boolean + regulator-oc-protection-microamp: + description: Set over current protection limit. This is a limit where + hardware performs emergency shutdown. Zero can be passed to disable + protection and value '1' indicates that protection should be enabled but + limit setting can be omitted. + + regulator-oc-error-microamp: + description: Set over current error limit. This is a limit where part of + the hardware propably is malfunctional and damage prevention is requested. + Zero can be passed to disable error detection and value '1' indicates + that detection should be enabled but limit setting can be omitted. + + regulator-oc-warn-microamp: + description: Set over current warning limit. This is a limit where hardware + is assumed still to be functional but approaching limit where it gets + damaged. Recovery actions should be initiated. Zero can be passed to + disable detection and value '1' indicates that detection should + be enabled but limit setting can be omitted. + + regulator-ov-protection-microvolt: + description: Set over voltage protection limit. This is a limit where + hardware performs emergency shutdown. Zero can be passed to disable + protection and value '1' indicates that protection should be enabled but + limit setting can be omitted. Limit is given as microvolt offset from + voltage set to regulator. + + regulator-ov-error-microvolt: + description: Set over voltage error limit. This is a limit where part of + the hardware propably is malfunctional and damage prevention is requested + Zero can be passed to disable error detection and value '1' indicates + that detection should be enabled but limit setting can be omitted. Limit + is given as microvolt offset from voltage set to regulator. + + regulator-ov-warn-microvolt: + description: Set over voltage warning limit. This is a limit where hardware + is assumed still to be functional but approaching limit where it gets + damaged. Recovery actions should be initiated. Zero can be passed to + disable detection and value '1' indicates that detection should + be enabled but limit setting can be omitted. Limit is given as microvolt + offset from voltage set to regulator. + + regulator-uv-protection-microvolt: + description: Set over under voltage protection limit. This is a limit where + hardware performs emergency shutdown. Zero can be passed to disable + protection and value '1' indicates that protection should be enabled but + limit setting can be omitted. Limit is given as microvolt offset from + voltage set to regulator. + + regulator-uv-error-microvolt: + description: Set under voltage error limit. This is a limit where part of + the hardware propably is malfunctional and damage prevention is requested + Zero can be passed to disable error detection and value '1' indicates + that detection should be enabled but limit setting can be omitted. Limit + is given as microvolt offset from voltage set to regulator. + + regulator-uv-warn-microvolt: + description: Set over under voltage warning limit. This is a limit where + hardware is assumed still to be functional but approaching limit where + it gets damaged. Recovery actions should be initiated. Zero can be passed + to disable detection and value '1' indicates that detection should + be enabled but limit setting can be omitted. Limit is given as microvolt + offset from voltage set to regulator. + + regulator-temp-protection-kelvin: + description: Set over temperature protection limit. This is a limit where + hardware performs emergency shutdown. Zero can be passed to disable + protection and value '1' indicates that protection should be enabled but + limit setting can be omitted. + + regulator-temp-error-kelvin: + description: Set over temperature error limit. This is a limit where part of + the hardware propably is malfunctional and damage prevention is requested + Zero can be passed to disable error detection and value '1' indicates + that detection should be enabled but limit setting can be omitted. + + regulator-temp-warn-kelvin: + description: Set over temperature warning limit. This is a limit where + hardware is assumed still to be functional but approaching limit where it + gets damaged. Recovery actions should be initiated. Zero can be passed to + disable detection and value '1' indicates that detection should + be enabled but limit setting can be omitted. + regulator-active-discharge: description: | tristate, enable/disable active discharge of regulators. The values are: