From patchwork Fri Apr 4 23:14:12 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Soren Brinkmann X-Patchwork-Id: 3941421 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0CAF29F357 for ; Fri, 4 Apr 2014 23:15:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3199920265 for ; Fri, 4 Apr 2014 23:15:29 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4627E202A1 for ; Fri, 4 Apr 2014 23:15:28 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWDKG-0005Ni-7h; Fri, 04 Apr 2014 23:15:08 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWDKD-0001m7-SS; Fri, 04 Apr 2014 23:15:05 +0000 Received: from mail-qa0-x231.google.com ([2607:f8b0:400d:c00::231]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWDKA-0001ki-DY for linux-arm-kernel@lists.infradead.org; Fri, 04 Apr 2014 23:15:03 +0000 Received: by mail-qa0-f49.google.com with SMTP id j7so3725834qaq.36 for ; Fri, 04 Apr 2014 16:14:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=dp+dxkRPFaFgwX++hDJmoWJTRGvqtdfPZqyPXXsBWE0=; b=K7yR/9+iw1TuSiTK7zd0CwZju99OE/rVKxDfaSQLAFtnIDK/0RV9z8QLz+DAFJDzRE rR8ChJUANKqYgVXEEPZkG9EsbYVeug55LRyKNlvbvhU1I+ZSzTYY2vlQUUBYmmXS927n KXX28OSSijedzufT/QILIqJeTRb+GDWTL6slJBiZN8GkT1I5j0R12pXKRBtSoxEdndJF eEmtdS5D3yuW1OMxZ6abJ+Aj1yjHAMtuGYZj+IoIqFuDUhXAbj170tuztx13ajAObDAv W96XxLkI08l9/2peAu56GHtGlLKXP8EfWKkE0G+DOEo8Uyuj5gN6GqjYX/DXodvDK/5t zmBg== X-Received: by 10.140.25.247 with SMTP id 110mr16682446qgt.83.1396653280849; Fri, 04 Apr 2014 16:14:40 -0700 (PDT) Received: from localhost ([149.199.62.254]) by mx.google.com with ESMTPSA id s111sm12883548qge.19.2014.04.04.16.14.38 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 04 Apr 2014 16:14:39 -0700 (PDT) From: Soren Brinkmann To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Russell King , Michal Simek Subject: [PATCH v2 1/5] ARM: zynq: DT: Add 'clock-latency' property Date: Fri, 4 Apr 2014 16:14:12 -0700 Message-Id: <1396653256-28397-2-git-send-email-soren.brinkmann@xilinx.com> X-Mailer: git-send-email 1.9.1.1.gbb9f595 In-Reply-To: <1396653256-28397-1-git-send-email-soren.brinkmann@xilinx.com> References: <1396653256-28397-1-git-send-email-soren.brinkmann@xilinx.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140404_191502_519012_892D81D9 X-CRM114-Status: GOOD ( 10.00 ) X-Spam-Score: -1.9 (-) Cc: devicetree@vger.kernel.org, Mike Looijmans , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Steffen Trumtrar , =?UTF-8?q?S=C3=B6ren=20Brinkmann?= X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Specify the 'clock-latency' property to avoid certain cpufreq governors from refusing to work with the following error: ondemand governor failed, too long transition latency of HW, fallback to performance governor Reported-by: Mike Looijmans Signed-off-by: Soren Brinkmann Tested-by: Mike Looijmans Signed-off-by: Michal Simek --- This is a fix from our vendor tree Changes in v2: - This patch has been added --- arch/arm/boot/dts/zynq-7000.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 789d0bacc110..20a13cba65a3 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -24,6 +24,7 @@ device_type = "cpu"; reg = <0>; clocks = <&clkc 3>; + clock-latency = <1000>; operating-points = < /* kHz uV */ 666667 1000000