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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 670ABC43334 for ; Wed, 15 Jun 2022 17:16:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aAMasCTufH6VzYZ3YlS7ym1x6oJc/oi27v2YVl6F/co=; b=y5gsHeuTTYWSVg IBmKSicF3F8VRTXi7MaujAetky/d61fyrrnDt1CxKK6nnbgXOHUMxN3mUc0UXdkiAfMN3nAbZPY/Y s55mjrlXtmlGppagr81meymL3gIbTGinDQXFnecfhU7tZd5i8Vt0LEVRBilNqgtHznEH3Q3+BmaPv NWsfZ9VjhzLkZ+dHWAZJetZvHVAgQaIzvjA6zLVvJl5s81w14euLs8Q/7OD3jt+Xikd4uMnsssIQo GIcE44cVYe3PPMEl8xcmV1dGqtd7ShO3MPukMOEVVBDf3EbCxj7DYr6Xmr4HIG2exqpCwlPzXdSmv 7Q6S4kOuGYKSTv+nbz6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1Wbx-00FdKd-Ki; Wed, 15 Jun 2022 17:15:21 +0000 Received: from mail-pg1-x52c.google.com ([2607:f8b0:4864:20::52c]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1Wbu-00FdIo-PR for linux-arm-kernel@lists.infradead.org; Wed, 15 Jun 2022 17:15:20 +0000 Received: by mail-pg1-x52c.google.com with SMTP id h192so11961486pgc.4 for ; Wed, 15 Jun 2022 10:15:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=nPsbkcbBeqbASqCJC2zl/rCrhRNAADIrDvak/nQhe9I=; b=zuUSSOBt4Ggjo0c6W+e3LgU4K8RLCr5F6HVZo7DVgpVZYW7riUD3FxWdyShRtnpMAd gD+qtluAXQsN8laYT3xeuEGuv0DrHBfYrgnttvxnqepG3/xslpnx+osllE93T4ST88+O dIe7oLe58IH8oAe+ScDXmlcmYTfJ9RDysO8JM7xTGO60AeiL7d/EEKC6DfZrssuCns49 mItlwhRGLv2lcbNJNAVRzp+SeGobY19ZlGiy7IT/Ey3N4z2nBpIGc7xwYJBLLEnr4DyG FGroZZaSzoHw6OS3i0d2hE3+1Y6EdBwec+ShpWaU5IDziPGTWyEAk97HswqN9AILr/8u xaSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=nPsbkcbBeqbASqCJC2zl/rCrhRNAADIrDvak/nQhe9I=; b=ydFhpqxsi5Nj1Dej0CEiykJdVmSOzJ18n/0cmfRJg6uKIcAHeRZw5nUXOtCMUL6sXB TERYOhDXa0wdglLVvrv8Ota2VGe/zhOjHbeQS8IIJSltZci5A4A7H9vDoQXLLQ7Qj5Yo CykXdKIJfS4KZWmMRxXcCJHuQp501f/sxsiYAWX72BBF5EV2h51jFwdsmUL/cVolkz3z yhPce4MfxOrvwLnpP/CnbjxF/rDzHuZoGhvYl/BWQOhsCQ0tToNC1hgDYRT2YVcCsef6 PD/1+U3L39sNSIe8FMl9EGK0P0+v5P0ktpVhJWxXX+4ZfhCU9qijVPeBV2zHRNFMO99z 5Iww== X-Gm-Message-State: AJIora9NHX1aS9OtvOmCMAYAmwVWPSWPT10828ll8tq7U6Q4rNDT202K 9QT1FcO4p2/1XpBH+PhLLaUaGw== X-Google-Smtp-Source: AGRyM1tYcSNkOShX6GUjY540L3XsgD4qhnoZ7s0AKq1KR4hZIS/RVxyoI7gWFkGA1LbJjPUi1Gog6w== X-Received: by 2002:a63:e517:0:b0:3fe:4273:1063 with SMTP id r23-20020a63e517000000b003fe42731063mr672021pgh.371.1655313317162; Wed, 15 Jun 2022 10:15:17 -0700 (PDT) Received: from [172.22.33.138] ([192.77.111.2]) by smtp.gmail.com with ESMTPSA id h30-20020aa79f5e000000b00519cfca8e30sm10153151pfr.209.2022.06.15.10.15.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Jun 2022 10:15:16 -0700 (PDT) Message-ID: <12e3bb72-af2d-653f-b342-c6b4d6a1f292@linaro.org> Date: Wed, 15 Jun 2022 10:15:15 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v1 0/5] power: domain: Add driver for a PM domain provider which controls Content-Language: en-US To: Max Krummenacher , Geert Uytterhoeven Cc: Rob Herring , Max Krummenacher , Ulf Hansson , Linux PM list , Francesco Dolcini , Mark Brown , "Rafael J . Wysocki" , Kevin Hilman , Andrejs Cainikovs , Biju Das , Bjorn Andersson , Catalin Marinas , Dmitry Baryshkov , Fabio Estevam , Geert Uytterhoeven , Krzysztof Kozlowski , Marcel Ziswiler , NXP Linux Team , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Vinod Koul , Will Deacon , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux ARM , Linux Kernel Mailing List References: <20220609150851.23084-1-max.oss.09@gmail.com> <20220613191549.GA4092455-robh@kernel.org> From: Krzysztof Kozlowski In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_101518_864362_640670A6 X-CRM114-Status: GOOD ( 17.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 15/06/2022 09:10, Max Krummenacher wrote: > Hi > > On Tue, Jun 14, 2022 at 9:22 AM Geert Uytterhoeven wrote: >> >> Hi Rob, >> >> On Mon, Jun 13, 2022 at 9:15 PM Rob Herring wrote: >>> On Thu, Jun 09, 2022 at 05:08:46PM +0200, Max Krummenacher wrote: >>>> From: Max Krummenacher >>>> >>>> its power enable by using a regulator. >>>> >>>> The currently implemented PM domain providers are all specific to >>>> a particular system on chip. >>> >>> Yes, power domains tend to be specific to an SoC... 'power-domains' is >>> supposed to be power islands in a chip. Linux 'PM domains' can be >>> anything... > > I don't see why such power islands should be restricted to a SoC. You can > build the exact same idea on a PCB or even more modular designs. In the SoC these power islands are more-or-less defined. These are real regions gated by some control knob. Calling few devices on a board "power domain" does not make it a power domain. There is no grouping, there is no control knob. Aren't you now re-implementing regulator supplies? How is this different than existing supplies? Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel