From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934318AbdIYK17 (ORCPT ); Mon, 25 Sep 2017 06:27:59 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:39283 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932716AbdIYK15 (ORCPT ); Mon, 25 Sep 2017 06:27:57 -0400 Date: Mon, 25 Sep 2017 12:27:44 +0200 From: Maxime Ripard To: Icenowy Zheng 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 Subject: Re: [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC Message-ID: <20170925102744.qixfwlheeimemhcf@flea.home> References: <20170923001531.14285-1-icenowy@aosc.io> <20170925101027.lghnnll4h6inreqm@flea.home> <27EF78BD-6285-4D8D-AA65-8294D797E2FB@aosc.io> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="nxscyzcqnjj4fs3l" Content-Disposition: inline In-Reply-To: <27EF78BD-6285-4D8D-AA65-8294D797E2FB@aosc.io> User-Agent: NeoMutt/20170914 (1.9.0) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nxscyzcqnjj4fs3l Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Sep 25, 2017 at 10:12:09AM +0000, Icenowy Zheng wrote: > =E4=BA=8E 2017=E5=B9=B49=E6=9C=8825=E6=97=A5 GMT+08:00 =E4=B8=8B=E5=8D=88= 6:10:27, Maxime Ripard =E5=86=99=E5=88= =B0: > >Hi, > > > >On Sat, Sep 23, 2017 at 12:15:28AM +0000, Icenowy Zheng wrote: > >> This patchset imports simple DVFS support for Allwinner A64 SoC. > >>=20 > >> 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. > >>=20 > >> 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... >=20 > 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. Please test using: https://linux-sunxi.org/Hardware_Reliability_Tests#Reliability_of_cpufreq_v= oltage.2Ffrequency_settings And post the report. Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com --nxscyzcqnjj4fs3l Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIcBAEBAgAGBQJZyNofAAoJEBx+YmzsjxAgqJYP/1c9nmqaw6mmDXypmQuZuJh1 qkBbTji6a44h0XX5YBMISpevLFM9pgIT5+i9DkaZfK1AnJG6PSowsSUra7KEBnrZ Paf9e/QDNAabVYz1ZF6SScIykYpHoJ9Ab2FVeKB50TJzvD2nOUL+kLP99iddPqSq pcPey+q/INY1/MhgRfi7V0zJdqkKeU+VfDfoOmrSoL8HihVz2TxNfktfpaYPNgSG 409nqaKx0eOqI61YJzvsfavlJVHH+th6iO+qkJAT+JyP9aSsnjJvbjek0SNbzOgx y1tT/QW90/I2mONbsyPdpubdZDjh0DJZKuerM1FK9CObIDjzvoXkD78ERQq5gOaV IIV20x9a1BA9k6HO2WikSRkB71YSjLglvIItqkSdpfc6Ey0CX+VRp5WmOv5mqBwS frXjpeZOiG5RerfUpB294GNzdwuNKJ8BcmYtT9nEmNt/ycm9z/IXzK38WXkvILzW fY/hXbfB1TVjqjZ4rexp04z9DPF0ura61IHywplje8V0ZHavELTI1axRQsrQYYis x0r3aos8Pgt5EL23X7yPuJdqMpXJN4y2BKt5HNvKjMBudRfBP8dS6omT8caCchbb nJpdRbAIXd4iUco5ekT2V64sy43Ec3QNC2dOt2AzEuglWFqLFO0XFi9InzhnhGuB vRqvNSo6aZGKesWR2ezz =80g5 -----END PGP SIGNATURE----- --nxscyzcqnjj4fs3l--