From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Wahren Subject: Re: ARM: mx28: cpufreq-cpu0 support? Date: Mon, 01 Sep 2014 08:31:05 +0200 Message-ID: <540412A9.4090806@lategoodbye.de> References: <53F9B4BF.2050802@lategoodbye.de> <20140825080123.GA12289@dragon> <53FB1041.5010208@lategoodbye.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: cpufreq-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Fabio Estevam Cc: Shawn Guo , Fabio Estevam , "cpufreq@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Otavio Salvador Hi Fabio, Am 30.08.2014 19:07, schrieb Fabio Estevam: > On Sat, Aug 30, 2014 at 2:05 PM, Fabio Estevam wrote: >> Hi Stefan, >> >> On Mon, Aug 25, 2014 at 7:30 AM, Stefan Wahren wrote: >> >>> As far as i know, the old Freescale BSP (2.6.35) contains a cpufreq driver >>> for mxs, which never goes to mainline. So i'm not sure what would be the >>> best way: porting the old driver or using cpufreq-cpu0. >> >> First step would be to port the PMU driver into mainline. > > I mean this regulator driver: > http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/regulator/mxs-regulator.c?h=imx_2.6.35_maintain > > ,so that you can do the voltage scaling. > thanks. Okay, that leads to more questions: How can i test a ported mxs-regulator driver, that it's really working? Is there any userspace interface? Is there a good DT implementation of a similiar regulator driver, so i can orientate on? What are the recommend mailing lists for this porting (linux-pm and linux-arm-kernel)? BR Stefan