From patchwork Sat Jun 26 06:18:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhou Yanjie X-Patchwork-Id: 12346173 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT 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 F2879C49EA5 for ; Sat, 26 Jun 2021 06:18:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF5F961607 for ; Sat, 26 Jun 2021 06:18:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230009AbhFZGVS (ORCPT ); Sat, 26 Jun 2021 02:21:18 -0400 Received: from out28-77.mail.aliyun.com ([115.124.28.77]:59176 "EHLO out28-77.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229975AbhFZGVR (ORCPT ); Sat, 26 Jun 2021 02:21:17 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.1080104|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_system_inform|0.142968-0.0102375-0.846795;FP=0|0|0|0|0|-1|-1|-1;HT=ay29a033018047211;MF=zhouyanjie@wanyeetech.com;NM=1;PH=DS;RN=15;RT=15;SR=0;TI=SMTPD_---.KYGAXY7_1624688322; Received: from zhouyanjie-virtual-machine.localdomain(mailfrom:zhouyanjie@wanyeetech.com fp:SMTPD_---.KYGAXY7_1624688322) by smtp.aliyun-inc.com(10.147.41.143); Sat, 26 Jun 2021 14:18:51 +0800 From: =?utf-8?b?5ZGo55Cw5p2wIChaaG91IFlhbmppZSk=?= To: tsbogend@alpha.franken.de, mturquette@baylibre.com, sboyd@kernel.org, paul@crapouillou.net, robh+dt@kernel.org Cc: 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 Subject: [PATCH v4 4/5] MIPS: CI20: Reduce clocksource to 750 kHz. Date: Sat, 26 Jun 2021 14:18:40 +0800 Message-Id: <1624688321-69131-5-git-send-email-zhouyanjie@wanyeetech.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1624688321-69131-1-git-send-email-zhouyanjie@wanyeetech.com> References: <1624688321-69131-1-git-send-email-zhouyanjie@wanyeetech.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org 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 --- 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>; };