From patchwork Wed Jan 7 22:21:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iain Paton X-Patchwork-Id: 5588471 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E78B5BF6C3 for ; Wed, 7 Jan 2015 22:24:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 218BC20375 for ; Wed, 7 Jan 2015 22:24:59 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (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 5873820374 for ; Wed, 7 Jan 2015 22:24:58 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y8yzc-0003OC-Pc; Wed, 07 Jan 2015 22:22:20 +0000 Received: from mail-wi0-x22a.google.com ([2a00:1450:400c:c05::22a]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Y8yzV-0003BJ-IO for linux-arm-kernel@lists.infradead.org; Wed, 07 Jan 2015 22:22:15 +0000 Received: by mail-wi0-f170.google.com with SMTP id bs8so9006559wib.3 for ; Wed, 07 Jan 2015 14:21:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; bh=i2pVSFljzYhymTEsKoVjGMNIW54TVEmuZZ/kwvv4LbA=; b=Ka+a9vuWxHIq7SgnPbEJuVX1snThxYja0+NeWt9OcdP6cum+qVCc8v8GMGytsBfS8q gBnPE7Esj/RcS3R2SckgpkRr9p4n9iOy6kEVTnvLP/vhvzR9cIZwFEdbDoUgdVHZAzMF jb231tYgkCN9+DlooI9G+ySd1YBIp6Wa7j6P/CZOcpECnotu+PGXx6I8GI3pTZ91yThV LSeUy3/zg6nWkMzvMBaAoE3vrIe4k9aSOr9bJnfR+aJqg001bXvQxFBLnX91OpMWXXIv MddwXfMLXxhct2xebPXyO2ITiiIzPv6vx78QUR0WAUhlQqINz07yuDUH+whSPkQvOBt0 B0tw== X-Received: by 10.180.20.242 with SMTP id q18mr11850692wie.80.1420669308203; Wed, 07 Jan 2015 14:21:48 -0800 (PST) Received: from ?IPv6:2001:8b0:3c4:1:2000::? (foundation.darkvoyage.org.uk. [2001:8b0:3c4:1:2000::]) by mx.google.com with ESMTPSA id wz5sm3713161wjc.29.2015.01.07.14.21.46 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 07 Jan 2015 14:21:47 -0800 (PST) Message-ID: <54ADB179.9000209@gmail.com> Date: Wed, 07 Jan 2015 22:21:45 +0000 From: Iain Paton User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: maxime.ripard@free-electrons.com Subject: ARM: dts: sunxi: A20-OlinuXino-Lime2 raise dcdc2 lower voltage limit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150107_142213_778302_02DD5C27 X-CRM114-Status: GOOD ( 10.36 ) X-Spam-Score: -0.6 (/) Cc: linux-sunxi@googlegroups.com, wens@csie.org, linux-arm-kernel@lists.infradead.org, wens213@gmail.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 The Lime2 is not stable if the cpu core voltage is reduced below 1v. To prevent any problems when operating points are enabled, raise the pmic dcdc2 lower voltage limit to 1v. Signed-off-by: Iain Paton --- Maxime, I realise the axp209 nodes will probably end up abstracted somewhat differently once all of the patches Chen-Yu posted are reviewed and picked up and I can redo the lime2 dts to fit once that's done. For now, the lime2 dts defines the full axp209 node itself including all of the regulators, so if the lowest opp with the 0.9v setting is enabled this will cause problems. Up to you if you want to take this patch now or we wait until the axp209.dtsi lands and refactor the lime2 dts appropriately then. arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts index ed364d5..910318a 100644 --- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts +++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts @@ -159,7 +159,7 @@ }; vdd_cpu: dcdc2 { - regulator-min-microvolt = <700000>; + regulator-min-microvolt = <1000000>; regulator-max-microvolt = <2275000>; regulator-always-on; };