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=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 17BF6C433E2 for ; Mon, 31 Aug 2020 11:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E16BB20866 for ; Mon, 31 Aug 2020 11:23:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="qu9xuHsi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726946AbgHaLW4 (ORCPT ); Mon, 31 Aug 2020 07:22:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726489AbgHaLEl (ORCPT ); Mon, 31 Aug 2020 07:04:41 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A565DC06123B for ; Mon, 31 Aug 2020 04:04:14 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id n12so403635pgj.9 for ; Mon, 31 Aug 2020 04:04:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=SQHLmew/+Uw02hOPwl2KHpbtxwjKEHifcexkv1FCU6c=; b=qu9xuHsiVO1/lhFmOB3Y3peMVj53ZshahjOB6elhp66R5CgK9whhOLPoUy9hJDwOml Xx52NED74g9DEWtob9uJW3arR10F4ZGioAyQqYEs5SvJ1RjzcZA2QrePfX+NC69hXOpx T2ZqORq8P48EJWSjC8u3HyAakTJWOPBND8tw/CDs4nTIDPYu0fE46kWrXoL+o5XVsLiq ztj4QCcWejcIcr3s62PLOOcoR4zkUTdUUajQzYFsgdxoSYCfFfbcUWznqhF0ABqFnXPE OHlJ3s1cAKonQKGi4+iTZ+TeuRQIbX3NmSxTqk9xxswBLaw7kbqZlhRogYMkOY2qzObd Qt+g== 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=SQHLmew/+Uw02hOPwl2KHpbtxwjKEHifcexkv1FCU6c=; b=AOsWITH0VX/rCbRVEaaBmdeiwgXoY1dexyuSAMfIAbKI+H8TbYCKSXkWomxNoE602n aiM5fZ5OmbaKBc69+bnM8QyZ2itNq5NNZO1AMmtU2ZFjlmSedsH2EoruI1lp19ael268 2A8/2EOVPPHv5/IRDgVoUL2Q4RuJMFZgXJz2tmpLZ/uDwCqn3gGg35H9UfxyZhzYuvE2 aZW2aRYWyF/vISBz6RDa6OmD5p1fEmvGWpwa32HgTByDa+CLEDxOVwLIThILIaaZCZyb u41tL03z39qHQbdxNfkGWHB34f6pO1RdDLiCg8BWoMOQ8U3Tji9x/KucDk7OAIdzRBVz OamA== X-Gm-Message-State: AOAM530S1E7EDBZV3EgHZGpAcjWIdGMMzsjWERLO0f8xjpmjX+GHFlJF e+KuVedSybCvIksIB9bUmfoJzA== X-Google-Smtp-Source: ABdhPJxeSefAgzvdXk9S266/E7KO0kwk+YEMEr+ulK04bFCe5SCH5jaiI2wePURUQh3DPfX154nn+A== X-Received: by 2002:a05:6a00:14d0:: with SMTP id w16mr833159pfu.39.1598871854010; Mon, 31 Aug 2020 04:04:14 -0700 (PDT) Received: from localhost ([122.167.135.199]) by smtp.gmail.com with ESMTPSA id w16sm7665688pfq.13.2020.08.31.04.04.12 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 31 Aug 2020 04:04:13 -0700 (PDT) Date: Mon, 31 Aug 2020 16:34:08 +0530 From: Viresh Kumar To: Dmitry Osipenko Cc: Rob Herring , Thierry Reding , Jonathan Hunter , linux-pm@vger.kernel.org, Vincent Guittot , Rafael Wysocki , Stephen Boyd , Nishanth Menon , Stephan Gerhold , devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/3] ARM: tegra: Pass multiple versions in opp-supported-hw property Message-ID: <20200831110408.a6lwivim4w4jtkdc@vireshk-i7> References: <20200831043908.mtw4dglybcmcabjb@vireshk-i7> <0da380c2-9161-d450-afd2-4b159c8cfb7d@gmail.com> <20200831084111.6udzvrdonxgzju4l@vireshk-i7> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716-391-311a52 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On 31-08-20, 12:54, Dmitry Osipenko wrote: > It's not clear to me how it could be applicable to the Tegra CPU OPP > because Tegra depends on a combination of SPEEDO + PROCESS versions. > > It's not like all voltages are the same for all OPPs that have the same > PROCESS ID, otherwise it indeed would be nice to have > "opp-microvolt-process0", but unfortunately this variant is not suitable > for Tegra because some freqs have different voltages using the same > PROCESS ID and the same applies to the SPEEDO ID. How exactly do you know what voltage belongs to a particular OPP ? opp@216000000 { clock-latency-ns = <400000>; opp-supported-hw = <0x0F 0x0003>; opp-hz = /bits/ 64 <216000000>; opp-microvolt-fast-process0 = <750000 750000 1125000>; opp-microvolt-slow-process0 = <750000 850000 1125000>; }; opp@312000000 { clock-latency-ns = <400000>; opp-supported-hw = <0x0F 0x0003>; opp-hz = /bits/ 64 <312000000>; opp-microvolt-fast-process0 = <750000 750000 1125000>; opp-microvolt-slow-process0 = <750000 850000 1125000>; }; You can make any combinations of such names that come from speedo, process, or something else. If you can get this done as a fixed formula then it is workable. -- viresh