Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754039AbaGKPLs (ORCPT ); Fri, 11 Jul 2014 11:11:48 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:15554 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752688AbaGKPLp (ORCPT ); Fri, 11 Jul 2014 11:11:45 -0400 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Fri, 11 Jul 2014 08:04:37 -0700 Message-ID: <53BFFEAD.7000405@nvidia.com> Date: Fri, 11 Jul 2014 18:11:41 +0300 From: Tuomas Tynkkynen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Thierry Reding , Peter De Schrijver CC: Viresh Kumar , "linux-tegra@vger.kernel.org" , Linux Kernel Mailing List , "linux-arm-kernel@lists.infradead.org" , "linux-pm@vger.kernel.org" , Stephen Warren , Prashant Gaikwad , Mike Turquette , "Rafael J. Wysocki" , "devicetree@vger.kernel.org" Subject: Re: [PATCH 12/13] cpufreq: Add cpufreq driver for Tegra124 References: <1405028569-14253-1-git-send-email-ttynkkynen@nvidia.com> <1405028569-14253-13-git-send-email-ttynkkynen@nvidia.com> <20140711091207.GY23218@tbergstrom-lnx.Nvidia.com> <20140711145735.GB6523@ulmo> In-Reply-To: <20140711145735.GB6523@ulmo> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/07/14 17:57, Thierry Reding wrote: >> I don't think that's going to work? The voltage scaling is handled in hw. > > Do we have to handle it in hardware or can we opt to do it in software, > too? > With the PLLX, voltage scaling is done entirely in SW. With the DFLL, it's possible to stay in open-loop mode and do it in SW, but there's not much point in that. -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/