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 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 46779C433DF for ; Tue, 16 Jun 2020 07:03:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1732A20810 for ; Tue, 16 Jun 2020 07:03:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592290985; bh=air/hKC0z5+Ttcp0buy/L1uE6RcyvZHYqvLAfZqOw5w=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Nqm+XD4X7k8cpepfqhKKxhfasRjxzkAg6PGPY6iVnbgzAHRrKUZopyflsZZIQ896Z 1qTQlLeqzsZenoCrb/RokyiJoXrrNZoGtV9GRUPHVmH2/Henawam5LUGCx20ekF337 xcfn5jQCKtALTtt4Hkny5L2W5a/jq33XbXT+d8Ng= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727775AbgFPHDE (ORCPT ); Tue, 16 Jun 2020 03:03:04 -0400 Received: from mail-ej1-f65.google.com ([209.85.218.65]:41125 "EHLO mail-ej1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727047AbgFPHDB (ORCPT ); Tue, 16 Jun 2020 03:03:01 -0400 Received: by mail-ej1-f65.google.com with SMTP id dp18so2100945ejc.8; Tue, 16 Jun 2020 00:02:59 -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:user-agent; bh=W+RINVE0XAWlLx/NciRZL3CxZwQ8/XrClWGZWDn4nfE=; b=SUl4rQGIHivhb71P38XTo3bb5chjpqgajocfue2hqT6SnY6ArjPxgQTExOnU4iZ5b6 QX2QjT8b6UOVGPN0ikVzyb93tmRiuHXZzz7iFdjSk2lJSp92QghQMckn5Bd0No/eaJ95 SqjC0vjQl/DkBkBv757gP3kgdLTTZux1+/M64fB4lQWS658ZsRs3+xG8wxCA5MDktY/3 tVDlK3IDx/bd1qtPARuNae+XlpV6SKp/ya4qsQpednwqot+T2QVWF9l/uzgr+VfOtomv mCPTHv6kir7GauYdNwQeYztpU/s/gIzfFxULEc8WGhq6ofHH+ob5EXCWWqVY3kpCLoUS pquA== X-Gm-Message-State: AOAM530yjinjsQU8j5BI9o7G+e3IqytlFNG5r/VtiltddsUbPEmNr+yr eRShRpsoO62B1me90lHew6s= X-Google-Smtp-Source: ABdhPJxl4oyx9iQxhRGORq2pzdp+iXjssmPRevhLNp+7V95nN07E3myCv4N1zJvRvpw1FVDX/qymKQ== X-Received: by 2002:a17:906:4b50:: with SMTP id j16mr1504437ejv.415.1592290978329; Tue, 16 Jun 2020 00:02:58 -0700 (PDT) Received: from kozik-lap ([194.230.155.184]) by smtp.googlemail.com with ESMTPSA id ce14sm10568034ejc.3.2020.06.16.00.02.56 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 16 Jun 2020 00:02:57 -0700 (PDT) Date: Tue, 16 Jun 2020 09:02:54 +0200 From: Krzysztof Kozlowski To: Marek Szyprowski Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Mark Brown , Liam Girdwood , Dmitry Osipenko , Lucas Stach , Bartlomiej Zolnierkiewicz , Viresh Kumar , peron.clem@gmail.com, Nishanth Menon , Stephen Boyd , Vincent Guittot , Rafael Wysocki , linux-samsung-soc@vger.kernel.org, Chanwoo Choi , Saravana Kannan Subject: Re: [PATCH RESEND v4] soc: samsung: Add simple voltage coupler for Exynos5800 Message-ID: <20200616070254.GA20282@kozik-lap> References: <20200616065821.29616-1-m.szyprowski@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200616065821.29616-1-m.szyprowski@samsung.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org On Tue, Jun 16, 2020 at 08:58:21AM +0200, Marek Szyprowski wrote: > Add a simple custom voltage regulator coupler for Exynos5800 SoCs, which > require coupling between "vdd_arm" and "vdd_int" regulators. This coupler > ensures that the voltage values don't go below the bootloader-selected > operation point during the boot process until a the clients sets their > constraints. It is achieved by assuming minimal voltage value equal to > the current value if no constraints are set. This also ensures proper > voltage balancing if any of the client driver is missing. > > The balancing code comes from the regulator/core.c with the additional > logic for handling regulators without client constraints applied added. > > Reviewed-by: Dmitry Osipenko Thanks, applied. Best regards, Krzysztof