From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hermes.aosc.io ([199.195.250.187]:54122 "EHLO hermes.aosc.io" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933128AbdIYKcR (ORCPT ); Mon, 25 Sep 2017 06:32:17 -0400 Date: Mon, 25 Sep 2017 18:29:38 +0800 In-Reply-To: <20170925102744.qixfwlheeimemhcf@flea.home> References: <20170923001531.14285-1-icenowy@aosc.io> <20170925101027.lghnnll4h6inreqm@flea.home> <27EF78BD-6285-4D8D-AA65-8294D797E2FB@aosc.io> <20170925102744.qixfwlheeimemhcf@flea.home> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Subject: Re: [linux-sunxi] Re: [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC To: maxime.ripard@free-electrons.com, Maxime Ripard CC: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-sunxi@googlegroups.com From: Icenowy Zheng Message-ID: <1C624335-37C2-4F22-BE78-A94F26D1D248@aosc.io> Sender: linux-clk-owner@vger.kernel.org List-ID: 于 2017年9月25日 GMT+08:00 下午6:27:44, Maxime Ripard 写到: >On Mon, Sep 25, 2017 at 10:12:09AM +0000, Icenowy Zheng wrote: >> 于 2017年9月25日 GMT+08:00 下午6:10:27, Maxime Ripard > 写到: >> >Hi, >> > >> >On Sat, Sep 23, 2017 at 12:15:28AM +0000, Icenowy Zheng wrote: >> >> This patchset imports simple DVFS support for Allwinner A64 SoC. >> >> >> >> As the thermal sensor driver is not yet implemented and some >boards >> >> have still no AXP PMIC support, now only two OPPs are present -- >> >> 648MHz@1.04V and 816MHz@1.1V to prevent overheat or undervoltage. >> >> >> >> PATCH 1 is a fix to the CCU driver of A64, and the remaining >patches >> >> set up the device tree bits of the DVFS on Pine64. >> > >> >How has this been tested? >> > >> >What tasks did you run, with what governor, etc... >> >> I only tested manual frequency switching between 648MHz and >> 816MHz, and tested the PLL stuck issue by change the OPPs to >> some random value. > >Ideally, we should test that it's actually reliable. Poorly chosen >OPPs might lead to corrupt data that you might not get before a while. These are OPPs from the official sys_config.fex . > >Please test using: >https://linux-sunxi.org/Hardware_Reliability_Tests#Reliability_of_cpufreq_voltage.2Ffrequency_settings > >And post the report. > >Maxime