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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 7D753C433E9 for ; Fri, 15 Jan 2021 15:15:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63142238A0 for ; Fri, 15 Jan 2021 15:15:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732549AbhAOPOt (ORCPT ); Fri, 15 Jan 2021 10:14:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731014AbhAOPOt (ORCPT ); Fri, 15 Jan 2021 10:14:49 -0500 Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3A09C0613C1; Fri, 15 Jan 2021 07:14:08 -0800 (PST) Received: by mail-wr1-x436.google.com with SMTP id q18so9646147wrn.1; Fri, 15 Jan 2021 07:14:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Ig07a06RJYhstJUTtuTXnM88Wle9PbNTUQG1v2vMeJ8=; b=O+keQBl+QSDanNb32m8TwXA2KNoj5a2rF9ZRcJlGW/uzYxkc07P/fUeE1MWAuuthUA bhDqUnvVzrSQr0ITpRGefg/EXl4VhM/9Ev1JqFszBDPjvP7OQcHcHxhEqvILanx7O5YV oJPd1wtCt3NdkRdV6tO3OWBSOU7VI/TqpoFteWYtBd18QbT5iOnuAZgF8L+thU7G+4EU nPAomvo+f+g3Z8LRnffoKlxJip5AfXDUYma3FsDPHqqo4M/IhCfQSmA5GOKZyS4YUboI PkXPOm7LEVcYpKaRrwtxuTb4XCKrrdJ/Teos/Rdf6KevhFcds6UaiXJExQ7MQqA61ot2 I2KA== 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=Ig07a06RJYhstJUTtuTXnM88Wle9PbNTUQG1v2vMeJ8=; b=DAu/345heFz8B81TLOyLbLgkq/1vCMszCvRqQn7x4rZB73TpBRrnB13xNopu1LRbDg 951dsq0FzHpFD7DTo6x7pWOPn85I+2DxDP8OWBtQrAidatC1ldSA91U61J16MacZxOrE TMlEl+8rjvBChYQE0zVgqOMh8aLZAOg4//PzQpcDQlYx4zM0bEAw0sQCF6m4KtNzPXYH vjS7McE9UW9knT3CHiiCNZLgJvElhYjlHeBWBj9343AVLv5Q3HjgTENpQMvTrvawi2mk LCBc+SJGEXjiXpwQn7IG7SzR2MiNNecqbvSrtm0HsXBfxgFBYe8mY1QWesC3Qq8Jck1T aqqQ== X-Gm-Message-State: AOAM530Yhx7sdHzVL3FSn27gh2LkGQoGiJPgowL4blKC6G+P8sLn4cgG rjguPdzp/jFe7e2dcC+A+SiLq/+5Spc= X-Google-Smtp-Source: ABdhPJwR57JCT5Mt+hvTlyf2X6XItRzZ97oHiK9O1wz2Q+KgGRO09uSyXC+vSEgux9S2ZOKFknpirA== X-Received: by 2002:adf:dc87:: with SMTP id r7mr13803060wrj.305.1610723647676; Fri, 15 Jan 2021 07:14:07 -0800 (PST) Received: from localhost ([62.96.65.119]) by smtp.gmail.com with ESMTPSA id x17sm14952793wro.40.2021.01.15.07.14.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Jan 2021 07:14:06 -0800 (PST) Date: Fri, 15 Jan 2021 16:14:04 +0100 From: Thierry Reding To: Dmitry Osipenko Cc: Jonathan Hunter , Peter De Schrijver , Prashant Gaikwad , Michael Turquette , Stephen Boyd , linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 4/5] clk: tegra: Halve SCLK rate on Tegra20 Message-ID: References: <20210112122724.1712-1-digetx@gmail.com> <20210112122724.1712-5-digetx@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="PnIn8VStIBEjcSUJ" Content-Disposition: inline In-Reply-To: <20210112122724.1712-5-digetx@gmail.com> User-Agent: Mutt/2.0.4 (26f41dd1) (2020-12-30) Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org --PnIn8VStIBEjcSUJ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 12, 2021 at 03:27:23PM +0300, Dmitry Osipenko wrote: > Higher SCLK rates on Tegra20 require high core voltage. The higher > clock rate may have a positive performance effect only for AHB DMA > transfers and AVP CPU, but both aren't used by upstream kernel at all. > Halve SCLK rate on Tegra20 in order to remove the high core voltage > requirement. >=20 > Signed-off-by: Dmitry Osipenko > --- > drivers/clk/tegra/clk-tegra20.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) Acked-by: Thierry Reding --PnIn8VStIBEjcSUJ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAmABsTwACgkQ3SOs138+ s6FuzQ/5ARFFUFkrWCz5UZGMJfVegH8DUhtKTtMzaqPZIvFnmMAymkei5mA9xJAC EVjkgKRg1Wf7K2jHxiqtLhPHPCQbu/qaG9yNKrptUUDMh1iBKqM9NKiGZYThfIjk IytrbIEKUqwk/YHtmCSqn0Uj6Wcy4pXsnpv1ER0N6efnCvfOKury8jPdaRtXVCHh pp8z4gqMUVGy7ATXHpMG739WZvk3y+M+Lm2vmmgJV0CVOWzKE+KXm7viSVFOsP6m UFxZwkp0Kld6flCZaGp4DY/KB/aHeEp56bJ8/fHGenRSt0dVifFL7bSJWuTetpet mXZXiXNJ0yQD9Ct5ZoToWKMI/JDMmG1O4UqAUcO+tAgp7dRG6vBwPWn7TWvMqtPJ DT4r/EZtXHoBqdYNm4FP73voa5NI6LguDfb0lQBPIK6xq9+pRV6pSZNb8R56haEd wDdIQDRxeA/aScEymwCC7JeYvDV4zuIvALCJIAs1f9U2DRW+I9KxaUuseVTubb6R 6U9ZCbTw2PMmAz2cvylvfk9Jc3rByitKO40/NEmcCPU+osThOTb3AAkPoiM7Wdu2 FNxGZaZ2Mb2Tbwz3+/sVgZnp85HRmoF2wBRbxyiv7bSFxb+OnkZs9QlUrP5u07+O Cqx2zeXPx1imsojsqt7hu8gL91PFxpK54UPOvfooAHQUtyR68UM= =4t7Z -----END PGP SIGNATURE----- --PnIn8VStIBEjcSUJ--