From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BE25C11F69 for ; Wed, 30 Jun 2021 12:21:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE05061625 for ; Wed, 30 Jun 2021 12:21:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234606AbhF3MX4 convert rfc822-to-8bit (ORCPT ); Wed, 30 Jun 2021 08:23:56 -0400 Received: from aposti.net ([89.234.176.197]:54664 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234510AbhF3MX4 (ORCPT ); Wed, 30 Jun 2021 08:23:56 -0400 Date: Wed, 30 Jun 2021 13:21:15 +0100 From: Paul Cercueil Subject: Re: [PATCH v4 4/5] MIPS: CI20: Reduce clocksource to 750 kHz. To: =?UTF-8?b?5ZGo55Cw5p2w?= Cc: tsbogend@alpha.franken.de, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, linux-mips@vger.kernel.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, dongsheng.qiu@ingenic.com, aric.pzqi@ingenic.com, rick.tyliu@ingenic.com, sihui.liu@ingenic.com, jun.jiang@ingenic.com, sernia.zhou@foxmail.com Message-Id: In-Reply-To: <1624688321-69131-5-git-send-email-zhouyanjie@wanyeetech.com> References: <1624688321-69131-1-git-send-email-zhouyanjie@wanyeetech.com> <1624688321-69131-5-git-send-email-zhouyanjie@wanyeetech.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Zhou, Le sam., juin 26 2021 at 14:18:40 +0800, 周琰杰 (Zhou Yanjie) a écrit : > The original clock (3 MHz) is too fast for the clocksource, > there will be a chance that the system may get stuck. > > Reported-by: Nikolaus Schaller > Tested-by: Nikolaus Schaller # on CI20 > Signed-off-by: 周琰杰 (Zhou Yanjie) Acked-by: Paul Cercueil Cheers, -Paul > --- > > Notes: > v4: > New patch. > > arch/mips/boot/dts/ingenic/ci20.dts | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/mips/boot/dts/ingenic/ci20.dts > b/arch/mips/boot/dts/ingenic/ci20.dts > index 8877c62..3a4eaf1 100644 > --- a/arch/mips/boot/dts/ingenic/ci20.dts > +++ b/arch/mips/boot/dts/ingenic/ci20.dts > @@ -525,10 +525,10 @@ > > &tcu { > /* > - * 750 kHz for the system timer and 3 MHz for the clocksource, > + * 750 kHz for the system timer and clocksource, > * use channel #0 for the system timer, #1 for the clocksource. > */ > assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>, > <&tcu TCU_CLK_OST>; > - assigned-clock-rates = <750000>, <3000000>, <3000000>; > + assigned-clock-rates = <750000>, <750000>, <3000000>; > }; > -- > 2.7.4 >