From patchwork Wed Mar 27 23:16:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10874083 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 1F7AB925 for ; Wed, 27 Mar 2019 23:18:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C39C28A5A for ; Wed, 27 Mar 2019 23:18:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 000F928B1D; Wed, 27 Mar 2019 23:18:48 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 7380328ABE for ; Wed, 27 Mar 2019 23:18:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733109AbfC0XSC (ORCPT ); Wed, 27 Mar 2019 19:18:02 -0400 Received: from outils.crapouillou.net ([89.234.176.41]:59468 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732789AbfC0XSB (ORCPT ); Wed, 27 Mar 2019 19:18:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1553728678; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=G+EzRBQpk9DxezKApxB3XMfQ8fsiA9FA550z/ZOndCI=; b=Dv8XV9blNBqxzTPsKTtPbQZHNwaE9PrZmuCO4LjUkXrBuGBIl/dhazBMbPnHDQfBSzFiHg a+JCqzCdBUNdnwgDr3jR4vhpGE5lgBgvxUugC4aclXjanYl4N1pFdTVuwQPPDvQKlZ3zfX jkkL4l4G3SV1YYkMhwfx3WbB6M82k6E= From: Paul Cercueil To: Rob Herring , Mark Rutland , Thierry Reding , Daniel Lezcano , Thomas Gleixner , Wim Van Sebroeck , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , Michael Turquette , Stephen Boyd Cc: Mathieu Malaterre , od@zcrc.me, 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, Paul Cercueil Subject: [PATCH v11 22/27] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Date: Thu, 28 Mar 2019 00:16:26 +0100 Message-Id: <20190327231631.15708-23-paul@crapouillou.net> In-Reply-To: <20190327231631.15708-1-paul@crapouillou.net> References: <20190327231631.15708-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@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 Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- 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>; +};