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=-4.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 E0BE9C433E9 for ; Thu, 7 Jan 2021 19:40:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7501233CF for ; Thu, 7 Jan 2021 19:40:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729182AbhAGTjx (ORCPT ); Thu, 7 Jan 2021 14:39:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48374 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725903AbhAGTjw (ORCPT ); Thu, 7 Jan 2021 14:39:52 -0500 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B20FC0612F5; Thu, 7 Jan 2021 11:39:12 -0800 (PST) Received: by mail-lf1-x12f.google.com with SMTP id a12so17349519lfl.6; Thu, 07 Jan 2021 11:39:12 -0800 (PST) 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=ffFy7U5GHTO2EDTarXBfsvng3yi/U0HlVmDD4XbAyvk=; b=Wyed8+zva/LYFJ10gJQ7x+ViNyXTsElCtmMUOpgTb/1YDegkPcwMsRWfb6bnPT+iKb yyIaGP48HD/upBYUEQjlmhnaGmrTDy9me1CdAxCQI1Rt9cCh1vfk83W55UpQWTrfx4fq on3q+XX+gRqs1lF4J6Dzk0wEr9tXNiH+ySbd07plWndwWUiv4F0ykGda/gBwJEg5vYOK ATsgATXXNyU6xMDyYcnyAnQ213ZoX/ZXl6yf3ac43tSt0qdPngmmF29bG1+eUDSwgUw1 AzFECZcWDk9At66ZrGB8CFVrd2+qabP6np+CVOMLQJhpLToWrA6wWVQzNGJpmAyDhR53 AsKw== 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=ffFy7U5GHTO2EDTarXBfsvng3yi/U0HlVmDD4XbAyvk=; b=nnkPIL+qmU7Pn9VV85Gqtyn9aDzojv5jm4mgl6ANhcy2fERHVf6LQo8NHnwL1lfCbD dMs8CrczlWd7oi5j8NB4zKMhVUdIIKzOVtfQ0ETx7WItg++NOOQAwDosj4qkKziOaRkv wpNWmJ0ObPp4xf3BNE/m1+vcxZQpIZho0kERmhuzSQSuue50e0Y4jq1AoikyqDD48JfM Krb/Sl5qB9gIeHDV3iAOFWkt7tt7Pq/n1148mz6J3N6jpmbuigGv6QsVB9b/HsBBQIvU kPJLRwi9T59wJL0ZJAOUaXfbEh+wGJruL16ePbzxcUnV7IUJ1nhaXEAejgTKncLruCZx 7SNg== X-Gm-Message-State: AOAM532uG5IfBPQJvyjteKNSU+30/4nF46zgIxRQMZs5dkQconHHP2PZ o3fbMMZj3rWyOZMNuGcDwFDn91MM8Og= X-Google-Smtp-Source: ABdhPJwcjsVwi672lMyB3VRDqyLku+RskEcHu3FcswkJW1KB+hkV/1FIv9p7umOsoz2IRKSWh6yzhA== X-Received: by 2002:a19:230d:: with SMTP id j13mr148331lfj.378.1610048350619; Thu, 07 Jan 2021 11:39:10 -0800 (PST) Received: from [192.168.2.145] (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.googlemail.com with ESMTPSA id q21sm1369032lff.280.2021.01.07.11.39.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Jan 2021 11:39:09 -0800 (PST) Subject: Re: [PATCH v2 00/48] Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs To: Krzysztof Kozlowski Cc: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Ulf Hansson , Mauro Carvalho Chehab , Rob Herring , Peter Geis , Nicolas Chauvet , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Michael Turquette , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org References: <20201217180638.22748-1-digetx@gmail.com> <20210105171111.GC26301@kozik-lap> From: Dmitry Osipenko Message-ID: <988cf951-ff81-4b48-6baf-b393bd1613d2@gmail.com> Date: Thu, 7 Jan 2021 22:39:09 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20210105171111.GC26301@kozik-lap> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 05.01.2021 20:11, Krzysztof Kozlowski пишет: > On Thu, Dec 17, 2020 at 09:05:50PM +0300, Dmitry Osipenko wrote: >> Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs, which reduces >> power consumption and heating of the Tegra chips. Tegra SoC has multiple >> hardware units which belong to a core power domain of the SoC and share >> the core voltage. The voltage must be selected in accordance to a minimum >> requirement of every core hardware unit. >> >> The minimum core voltage requirement depends on: >> >> 1. Clock enable state of a hardware unit. >> 2. Clock frequency. >> 3. Unit's internal idling/active state. >> >> This series is tested on Acer A500 (T20), AC100 (T20), Nexus 7 (T30), >> Ouya (T30), TK1 (T124) and some others. I also added voltage scaling to >> the Ventana (T20) and Cardhu (T30) boards which are tested by NVIDIA's CI >> farm. Tegra30 is now couple degrees cooler on Nexus 7 and stays cool on >> Ouya (instead of becoming burning hot) while system is idling. It should >> be possible to improve this further by implementing a more advanced power >> management features for the kernel drivers. >> >> The DVFS support is opt-in for all boards, meaning that older DTBs will >> continue to work like they did it before this series. It should be possible >> to easily add the core voltage scaling support for Tegra114+ SoCs based on >> this grounding work later on, if anyone will want to implement it. > > The same comment as for your interconnect work: for sets touching > multiple systems please mention the dependencies between patches in the > cover letter. Not as a reply to such remark like I make here, but as a > separate entry in the cover letter. I'll describe all the dependencies in the next revision, thanks. 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Wysocki" , Liam Girdwood , Mark Brown , Peter Geis Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" MDUuMDEuMjAyMSAyMDoxMSwgS3J6eXN6dG9mIEtvemxvd3NraSDQv9C40YjQtdGCOgo+IE9uIFRo dSwgRGVjIDE3LCAyMDIwIGF0IDA5OjA1OjUwUE0gKzAzMDAsIERtaXRyeSBPc2lwZW5rbyB3cm90 ZToKPj4gSW50cm9kdWNlIGNvcmUgdm9sdGFnZSBzY2FsaW5nIGZvciBOVklESUEgVGVncmEyMC8z MCBTb0NzLCB3aGljaCByZWR1Y2VzCj4+IHBvd2VyIGNvbnN1bXB0aW9uIGFuZCBoZWF0aW5nIG9m IHRoZSBUZWdyYSBjaGlwcy4gVGVncmEgU29DIGhhcyBtdWx0aXBsZQo+PiBoYXJkd2FyZSB1bml0 cyB3aGljaCBiZWxvbmcgdG8gYSBjb3JlIHBvd2VyIGRvbWFpbiBvZiB0aGUgU29DIGFuZCBzaGFy ZQo+PiB0aGUgY29yZSB2b2x0YWdlLiBUaGUgdm9sdGFnZSBtdXN0IGJlIHNlbGVjdGVkIGluIGFj Y29yZGFuY2UgdG8gYSBtaW5pbXVtCj4+IHJlcXVpcmVtZW50IG9mIGV2ZXJ5IGNvcmUgaGFyZHdh cmUgdW5pdC4KPj4KPj4gVGhlIG1pbmltdW0gY29yZSB2b2x0YWdlIHJlcXVpcmVtZW50IGRlcGVu ZHMgb246Cj4+Cj4+ICAgMS4gQ2xvY2sgZW5hYmxlIHN0YXRlIG9mIGEgaGFyZHdhcmUgdW5pdC4K Pj4gICAyLiBDbG9jayBmcmVxdWVuY3kuCj4+ICAgMy4gVW5pdCdzIGludGVybmFsIGlkbGluZy9h Y3RpdmUgc3RhdGUuCj4+Cj4+IFRoaXMgc2VyaWVzIGlzIHRlc3RlZCBvbiBBY2VyIEE1MDAgKFQy MCksIEFDMTAwIChUMjApLCBOZXh1cyA3IChUMzApLAo+PiBPdXlhIChUMzApLCBUSzEgKFQxMjQp IGFuZCBzb21lIG90aGVycy4gSSBhbHNvIGFkZGVkIHZvbHRhZ2Ugc2NhbGluZyB0bwo+PiB0aGUg VmVudGFuYSAoVDIwKSBhbmQgQ2FyZGh1IChUMzApIGJvYXJkcyB3aGljaCBhcmUgdGVzdGVkIGJ5 IE5WSURJQSdzIENJCj4+IGZhcm0uIFRlZ3JhMzAgaXMgbm93IGNvdXBsZSBkZWdyZWVzIGNvb2xl ciBvbiBOZXh1cyA3IGFuZCBzdGF5cyBjb29sIG9uCj4+IE91eWEgKGluc3RlYWQgb2YgYmVjb21p bmcgYnVybmluZyBob3QpIHdoaWxlIHN5c3RlbSBpcyBpZGxpbmcuIEl0IHNob3VsZAo+PiBiZSBw b3NzaWJsZSB0byBpbXByb3ZlIHRoaXMgZnVydGhlciBieSBpbXBsZW1lbnRpbmcgYSBtb3JlIGFk dmFuY2VkIHBvd2VyCj4+IG1hbmFnZW1lbnQgZmVhdHVyZXMgZm9yIHRoZSBrZXJuZWwgZHJpdmVy cy4KPj4KPj4gVGhlIERWRlMgc3VwcG9ydCBpcyBvcHQtaW4gZm9yIGFsbCBib2FyZHMsIG1lYW5p bmcgdGhhdCBvbGRlciBEVEJzIHdpbGwKPj4gY29udGludWUgdG8gd29yayBsaWtlIHRoZXkgZGlk IGl0IGJlZm9yZSB0aGlzIHNlcmllcy4gSXQgc2hvdWxkIGJlIHBvc3NpYmxlCj4+IHRvIGVhc2ls eSBhZGQgdGhlIGNvcmUgdm9sdGFnZSBzY2FsaW5nIHN1cHBvcnQgZm9yIFRlZ3JhMTE0KyBTb0Nz IGJhc2VkIG9uCj4+IHRoaXMgZ3JvdW5kaW5nIHdvcmsgbGF0ZXIgb24sIGlmIGFueW9uZSB3aWxs IHdhbnQgdG8gaW1wbGVtZW50IGl0Lgo+IAo+IFRoZSBzYW1lIGNvbW1lbnQgYXMgZm9yIHlvdXIg aW50ZXJjb25uZWN0IHdvcms6IGZvciBzZXRzIHRvdWNoaW5nCj4gbXVsdGlwbGUgc3lzdGVtcyBw bGVhc2UgbWVudGlvbiB0aGUgZGVwZW5kZW5jaWVzIGJldHdlZW4gcGF0Y2hlcyBpbiB0aGUKPiBj b3ZlciBsZXR0ZXIuIE5vdCBhcyBhIHJlcGx5IHRvIHN1Y2ggcmVtYXJrIGxpa2UgSSBtYWtlIGhl cmUsIGJ1dCBhcyBhCj4gc2VwYXJhdGUgZW50cnkgaW4gdGhlIGNvdmVyIGxldHRlci4KCkknbGwg ZGVzY3JpYmUgYWxsIHRoZSBkZXBlbmRlbmNpZXMgaW4gdGhlIG5leHQgcmV2aXNpb24sIHRoYW5r cy4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZGV2ZWwg bWFpbGluZyBsaXN0CmRldmVsQGxpbnV4ZHJpdmVycHJvamVjdC5vcmcKaHR0cDovL2RyaXZlcmRl di5saW51eGRyaXZlcnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8vZHJpdmVyZGV2LWRldmVs Cg== 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=-2.3 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 AAF2CC433E6 for ; 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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id q21sm1369032lff.280.2021.01.07.11.39.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Jan 2021 11:39:09 -0800 (PST) Subject: Re: [PATCH v2 00/48] Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs To: Krzysztof Kozlowski References: <20201217180638.22748-1-digetx@gmail.com> <20210105171111.GC26301@kozik-lap> From: Dmitry Osipenko Message-ID: <988cf951-ff81-4b48-6baf-b393bd1613d2@gmail.com> Date: Thu, 7 Jan 2021 22:39:09 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20210105171111.GC26301@kozik-lap> Content-Language: en-US X-Mailman-Approved-At: Fri, 08 Jan 2021 08:55:35 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ulf Hansson , Michael Turquette , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thierry Reding , linux-clk@vger.kernel.org, devel@driverdev.osuosl.org, Kevin Hilman , Nicolas Chauvet , Viresh Kumar , Jonathan Hunter , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , linux-tegra@vger.kernel.org, Mauro Carvalho Chehab , Stephen Boyd , Peter De Schrijver , "Rafael J. Wysocki" , Liam Girdwood , Mark Brown , Peter Geis Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" MDUuMDEuMjAyMSAyMDoxMSwgS3J6eXN6dG9mIEtvemxvd3NraSDQv9C40YjQtdGCOgo+IE9uIFRo dSwgRGVjIDE3LCAyMDIwIGF0IDA5OjA1OjUwUE0gKzAzMDAsIERtaXRyeSBPc2lwZW5rbyB3cm90 ZToKPj4gSW50cm9kdWNlIGNvcmUgdm9sdGFnZSBzY2FsaW5nIGZvciBOVklESUEgVGVncmEyMC8z MCBTb0NzLCB3aGljaCByZWR1Y2VzCj4+IHBvd2VyIGNvbnN1bXB0aW9uIGFuZCBoZWF0aW5nIG9m IHRoZSBUZWdyYSBjaGlwcy4gVGVncmEgU29DIGhhcyBtdWx0aXBsZQo+PiBoYXJkd2FyZSB1bml0 cyB3aGljaCBiZWxvbmcgdG8gYSBjb3JlIHBvd2VyIGRvbWFpbiBvZiB0aGUgU29DIGFuZCBzaGFy ZQo+PiB0aGUgY29yZSB2b2x0YWdlLiBUaGUgdm9sdGFnZSBtdXN0IGJlIHNlbGVjdGVkIGluIGFj Y29yZGFuY2UgdG8gYSBtaW5pbXVtCj4+IHJlcXVpcmVtZW50IG9mIGV2ZXJ5IGNvcmUgaGFyZHdh cmUgdW5pdC4KPj4KPj4gVGhlIG1pbmltdW0gY29yZSB2b2x0YWdlIHJlcXVpcmVtZW50IGRlcGVu ZHMgb246Cj4+Cj4+ICAgMS4gQ2xvY2sgZW5hYmxlIHN0YXRlIG9mIGEgaGFyZHdhcmUgdW5pdC4K Pj4gICAyLiBDbG9jayBmcmVxdWVuY3kuCj4+ICAgMy4gVW5pdCdzIGludGVybmFsIGlkbGluZy9h Y3RpdmUgc3RhdGUuCj4+Cj4+IFRoaXMgc2VyaWVzIGlzIHRlc3RlZCBvbiBBY2VyIEE1MDAgKFQy MCksIEFDMTAwIChUMjApLCBOZXh1cyA3IChUMzApLAo+PiBPdXlhIChUMzApLCBUSzEgKFQxMjQp IGFuZCBzb21lIG90aGVycy4gSSBhbHNvIGFkZGVkIHZvbHRhZ2Ugc2NhbGluZyB0bwo+PiB0aGUg VmVudGFuYSAoVDIwKSBhbmQgQ2FyZGh1IChUMzApIGJvYXJkcyB3aGljaCBhcmUgdGVzdGVkIGJ5 IE5WSURJQSdzIENJCj4+IGZhcm0uIFRlZ3JhMzAgaXMgbm93IGNvdXBsZSBkZWdyZWVzIGNvb2xl ciBvbiBOZXh1cyA3IGFuZCBzdGF5cyBjb29sIG9uCj4+IE91eWEgKGluc3RlYWQgb2YgYmVjb21p bmcgYnVybmluZyBob3QpIHdoaWxlIHN5c3RlbSBpcyBpZGxpbmcuIEl0IHNob3VsZAo+PiBiZSBw b3NzaWJsZSB0byBpbXByb3ZlIHRoaXMgZnVydGhlciBieSBpbXBsZW1lbnRpbmcgYSBtb3JlIGFk dmFuY2VkIHBvd2VyCj4+IG1hbmFnZW1lbnQgZmVhdHVyZXMgZm9yIHRoZSBrZXJuZWwgZHJpdmVy cy4KPj4KPj4gVGhlIERWRlMgc3VwcG9ydCBpcyBvcHQtaW4gZm9yIGFsbCBib2FyZHMsIG1lYW5p bmcgdGhhdCBvbGRlciBEVEJzIHdpbGwKPj4gY29udGludWUgdG8gd29yayBsaWtlIHRoZXkgZGlk IGl0IGJlZm9yZSB0aGlzIHNlcmllcy4gSXQgc2hvdWxkIGJlIHBvc3NpYmxlCj4+IHRvIGVhc2ls eSBhZGQgdGhlIGNvcmUgdm9sdGFnZSBzY2FsaW5nIHN1cHBvcnQgZm9yIFRlZ3JhMTE0KyBTb0Nz IGJhc2VkIG9uCj4+IHRoaXMgZ3JvdW5kaW5nIHdvcmsgbGF0ZXIgb24sIGlmIGFueW9uZSB3aWxs IHdhbnQgdG8gaW1wbGVtZW50IGl0Lgo+IAo+IFRoZSBzYW1lIGNvbW1lbnQgYXMgZm9yIHlvdXIg aW50ZXJjb25uZWN0IHdvcms6IGZvciBzZXRzIHRvdWNoaW5nCj4gbXVsdGlwbGUgc3lzdGVtcyBw bGVhc2UgbWVudGlvbiB0aGUgZGVwZW5kZW5jaWVzIGJldHdlZW4gcGF0Y2hlcyBpbiB0aGUKPiBj b3ZlciBsZXR0ZXIuIE5vdCBhcyBhIHJlcGx5IHRvIHN1Y2ggcmVtYXJrIGxpa2UgSSBtYWtlIGhl cmUsIGJ1dCBhcyBhCj4gc2VwYXJhdGUgZW50cnkgaW4gdGhlIGNvdmVyIGxldHRlci4KCkknbGwg ZGVzY3JpYmUgYWxsIHRoZSBkZXBlbmRlbmNpZXMgaW4gdGhlIG5leHQgcmV2aXNpb24sIHRoYW5r cy4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRl dmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8v bGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==