From patchwork Sat Mar 2 23:34:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836919 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 2F4221575 for ; Sat, 2 Mar 2019 23:37:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1D50F2A57F for ; Sat, 2 Mar 2019 23:37:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 111B52A586; Sat, 2 Mar 2019 23:37:03 +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 BA2CE2A57F for ; Sat, 2 Mar 2019 23:37:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727533AbfCBXg5 (ORCPT ); Sat, 2 Mar 2019 18:36:57 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35846 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727250AbfCBXg5 (ORCPT ); Sat, 2 Mar 2019 18:36:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569813; 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=d1n75EL0YwMRDmo9Nsj0mJyLjEkAcDsj7MXfFDG59LE=; b=qQGDKCqiGir2MLBXIgVr5JEsbKd+hxAMn5b5bOrvWp4ikvXlizp5QmcBkYxM+imD9+UC2O rI2MhGPqmlTJg2MA85sho38JLSZDnvRhqqJKRPS357RoRtC4yDHDCXUFf4czfnLiqZaAl9 oJ4+CsVV9gR9EoKqR5D+Se7DAle5K58= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= 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 v10 23/27] MIPS: CI20: Reduce system timer and clocksource to 3 MHz Date: Sat, 2 Mar 2019 20:34:09 -0300 Message-Id: <20190302233413.14813-24-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-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 (48 MHz) is too fast for the system timer. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: Set also the rate for the clocksource channel's clock v7: No change v8: No change v9: Don't configure clock timer1, as the OS Timer is used as clocksource on this SoC v10: Revert back to v8 bahaviour. Let the user choose what clocksource should be used. arch/mips/boot/dts/ingenic/ci20.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts index 4f7b1fa31cf5..30b01cfaaf5a 100644 --- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts @@ -238,3 +238,9 @@ bias-disable; }; }; + +&tcu { + /* 3 MHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <3000000>, <3000000>; +};