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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 69C08C04A6B for ; Wed, 8 May 2019 13:11:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C4F020850 for ; Wed, 8 May 2019 13:11:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Oc1+a6P+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727425AbfEHNLD (ORCPT ); Wed, 8 May 2019 09:11:03 -0400 Received: from mail-lj1-f194.google.com ([209.85.208.194]:44766 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727210AbfEHNLD (ORCPT ); Wed, 8 May 2019 09:11:03 -0400 Received: by mail-lj1-f194.google.com with SMTP id e13so2842249ljl.11; Wed, 08 May 2019 06:11:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=uPUEltEM8YnnSOYwSvRNb2803gogpOnMDSmCbmKkT28=; b=Oc1+a6P+tQ0R9ivDMoNUscebnkTlJegOOoekMYI9H7VfW4bVhpTv+yexL4UKe3K9JR zJ+5AxEkP3rB2/qgcXjvVZ0Jia/rtT6tPDM5YYy9GsxsnRBDq6Mngc1+jQW8hcgK0n9j W9nMjbaalkGNOTNjeLrfcz753AeTr/O7bVLshgj2If4YyTf8sLRRg2RtmwnNAQY1u8H9 30rkG2wBiYPY7m3oPcsgEPavLEToOu/B014kju+Q0b1DdJJRLGFvxRFfHvMbBym/HWxQ 9A+bhnH3ABZvIQsQT+Dc7/Ify8Ve1a2tDpJTRn4KoicIMCH2rcjwBJKYGLUPofEws5IX F59g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=uPUEltEM8YnnSOYwSvRNb2803gogpOnMDSmCbmKkT28=; b=c1u2qdiTTsdTyHRsgNEY/5y7ALHA49ZktYfJh/Ep5LqkGgGchAndcFLH1y6dHnkmsF LDP3bW+F1JwMTAB/i6lIfgSVmh6qWvXfxpMkFq6878Dw2yYHvoOGYXK384CA0xDf85kD s834zT+mfn9YhiwQz2IhYoOKdv+11IYeVGb6FdCqYWZaVqh+/AZfmto7QIU5q/hSUw+w xhKIqPCE/UPVWQV+UKfDtwxdDIO89DAIOWo8uzDv0HWQf0hu92e4AMd/aFA0a+Z8fwVn 6Il6GNwFpSH4H8Gm7o2Bpi3ib67YxzO0YgJdMospT1teMTynORLOO/bUh2ql2cNdCEOB NY3A== X-Gm-Message-State: APjAAAW50bZKOJRz7GiX5oaZaivtIIpZtrrF+ep0Q88F19jcZAmruiFQ NHQ3UTKF/ott9QlhJMHCCq1avGfr X-Google-Smtp-Source: APXvYqzRwlyfw6KVbMu9yCCQaQLVeAxxCmeB1ATfkMgtPjRN1Vtza3wSmdh4I9mnhn99ztU+7hZi0A== X-Received: by 2002:a2e:8846:: with SMTP id z6mr18664891ljj.98.1557321060933; Wed, 08 May 2019 06:11:00 -0700 (PDT) Received: from [192.168.2.145] (ppp94-29-35-107.pppoe.spdop.ru. [94.29.35.107]) by smtp.googlemail.com with ESMTPSA id j6sm4536133ljc.0.2019.05.08.06.10.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 08 May 2019 06:10:59 -0700 (PDT) Subject: Re: [RFC PATCH v1 5/6] soc/tegra: regulators: Add regulators coupler for Tegra20 To: Mark Brown Cc: Liam Girdwood , Thierry Reding , Jonathan Hunter , Peter De Schrijver , linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org References: <20190414175939.12368-1-digetx@gmail.com> <20190414175939.12368-6-digetx@gmail.com> <20190508075706.GW14916@sirena.org.uk> From: Dmitry Osipenko Message-ID: <9756d8ca-0778-5185-5b6b-3168d63819ec@gmail.com> Date: Wed, 8 May 2019 16:10:58 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190508075706.GW14916@sirena.org.uk> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 08.05.2019 10:57, Mark Brown пишет: > On Sun, Apr 14, 2019 at 08:59:38PM +0300, Dmitry Osipenko wrote: >> Add regulators coupler for Tegra20 SoC's that performs voltage balancing >> of a coupled regulators and thus provides voltage scaling functionality. > > Can you say what the rules that this is trying to follow are? > There are three regulators: CPU, CORE and RTC. Constraints: 1) CORE and RTC have max-spread voltage of 170mV. 2) CORE and RTC voltages must be higher than the CPU voltage by at least 120mV.