From patchwork Wed Dec 12 22:09:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10727293 X-Patchwork-Delegate: paulburton@kernel.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AF95C1759 for ; Wed, 12 Dec 2018 22:19:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A2A2829CD5 for ; Wed, 12 Dec 2018 22:19:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 960E629D39; Wed, 12 Dec 2018 22:19:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 43B7A29D37 for ; Wed, 12 Dec 2018 22:19:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728514AbeLLWSu (ORCPT ); Wed, 12 Dec 2018 17:18:50 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:40718 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728569AbeLLWQu (ORCPT ); Wed, 12 Dec 2018 17:16:50 -0500 From: Paul Cercueil To: Thierry Reding , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet Cc: Mathieu Malaterre , Ezequiel Garcia , PrasannaKumar Muralidharan , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, od@zcrc.me, Paul Cercueil Subject: [PATCH v8 20/26] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Date: Wed, 12 Dec 2018 23:09:15 +0100 Message-Id: <20181212220922.18759-21-paul@crapouillou.net> In-Reply-To: <20181212220922.18759-1-paul@crapouillou.net> References: <20181212220922.18759-1-paul@crapouillou.net> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1544652610; bh=5ZGJczYIx/iwZOX8MqsmqWhi6eMgPMkfxH+1F8THJyE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=Y6umY1F/p7kgYGUlrDhCIEZ21aB3QKuupiGgk78ZZBMk6iXhjpXHjw6e4HNJq0Kdvj9GJHG+bvuvZKZZLlVjSlTrdI91JXaYjCKF3CnKDrUSJTVOH+AeBZStb6Gg2D+pEKfOAFgKnEj9SOFkxjbaH4yK4U7RI9zfp4GS6PeekXM= Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The default clock (12 MHz) is too fast for the system timer, which fails to report time accurately. Signed-off-by: Paul Cercueil --- Notes: v5: New patch v6: Remove ingenic,clocksource-channel property v7: No change v8: No change arch/mips/boot/dts/ingenic/qi_lb60.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts index 85529a142409..de9d45e2c24a 100644 --- a/arch/mips/boot/dts/ingenic/qi_lb60.dts +++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts @@ -45,3 +45,9 @@ bias-disable; }; }; + +&tcu { + /* 750 kHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <750000>, <750000>; +};