From patchwork Wed Dec 12 22:13:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10727339 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 E670814BD for ; Wed, 12 Dec 2018 22:22:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D97912A920 for ; Wed, 12 Dec 2018 22:22:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDD552B210; Wed, 12 Dec 2018 22:22:11 +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 791A22A920 for ; Wed, 12 Dec 2018 22:22:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728345AbeLLWWE (ORCPT ); Wed, 12 Dec 2018 17:22:04 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:44944 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728392AbeLLWVl (ORCPT ); Wed, 12 Dec 2018 17:21:41 -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 24/26] MIPS: GCW0: Reduce system timer and clocksource to 750 kHz Date: Wed, 12 Dec 2018 23:13:33 +0100 Message-Id: <20181212221335.19404-1-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=1544652820; bh=e0kNvvuhg8f5WBG6n5hty1EJZlzodm1w2H6KLsmhNd0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=wNRqrgTLUe4SbsS6rrFYqlNoNqLc7PenSPNHsD27rFUa71W4u6J4krlPwXJ/SYU2HhTllMgx5ABpyeaQ9Gdb02dmr5c/cMiuQNHuZsxWH8TKNedUu2+OqcsTk5BB0O0f6nB7gdsYasrMtMH69XH42qC4h0qm99qMETaXzvE8CBM= 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: v8: New patch arch/mips/boot/dts/ingenic/gcw0.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/gcw0.dts b/arch/mips/boot/dts/ingenic/gcw0.dts index 8abab14eb852..651c3f505fa5 100644 --- a/arch/mips/boot/dts/ingenic/gcw0.dts +++ b/arch/mips/boot/dts/ingenic/gcw0.dts @@ -61,6 +61,12 @@ status = "okay"; }; +&tcu { + /* 750 kHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>; + assigned-clock-rates = <750000>, <750000>; +}; + &pwm { /* Channels 1 and 3-7 are for PWM use */ reg = <0x50 0x10>, <0x70 0x50>;