From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: Re: Plain DFS (no voltage scaling) Date: Wed, 3 Feb 2016 07:40:52 +0530 Message-ID: <20160203021052.GK31828@vireshk> References: <56B11B67.3090600@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pf0-f171.google.com ([209.85.192.171]:34900 "EHLO mail-pf0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754270AbcBCCK4 (ORCPT ); Tue, 2 Feb 2016 21:10:56 -0500 Received: by mail-pf0-f171.google.com with SMTP id 65so4544132pfd.2 for ; Tue, 02 Feb 2016 18:10:56 -0800 (PST) Content-Disposition: inline In-Reply-To: <56B11B67.3090600@free.fr> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Mason Cc: Linux PM , "Rafael J. Wysocki" , Linux ARM On 02-02-16, 22:11, Mason wrote: > Hello, > > I plan to enable the on-demand governor on the tango platform: > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/tango4-smp8758.dtsi > > I found the cpufreq-dt binding doc: > > https://www.kernel.org/doc/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt > https://www.kernel.org/doc/Documentation/devicetree/bindings/opp/opp.txt > > Something is not clear to me: > > If my platform cannot scale the voltage, what information > should I put in the voltage part of the DT? Wouldn't matter if there is no regulator. i.e. you should keep 0, but even if they have something non-zero, core code will ignore it. But yeah, it makes sense to keep it zero. -- viresh