From patchwork Fri Oct 10 20:33:39 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Nelson X-Patchwork-Id: 5067231 Return-Path: X-Original-To: patchwork-linux-omap@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 CCF869F30B for ; Fri, 10 Oct 2014 20:33:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 062102022A for ; Fri, 10 Oct 2014 20:33:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22B89201F2 for ; Fri, 10 Oct 2014 20:33:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752115AbaJJUdr (ORCPT ); Fri, 10 Oct 2014 16:33:47 -0400 Received: from mail-ig0-f182.google.com ([209.85.213.182]:36643 "EHLO mail-ig0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751139AbaJJUdq (ORCPT ); Fri, 10 Oct 2014 16:33:46 -0400 Received: by mail-ig0-f182.google.com with SMTP id hn15so4213588igb.9 for ; Fri, 10 Oct 2014 13:33:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=TX32rhT1EqAjJr4VRNF8PaihsiCkj/xLBoDYJkUgato=; b=LXUp4XgVvxieHlOreQ765KGV4r9Jp+ZA6ZnsbazE+D/cC1YX1ESIYJUo8DMgDtQO6d cf+cxrAeWzCgK++f8EkI/NeWvGqNNUe1Rx3RrP8WUzwf5E85XD+15690TQGPvfD5H430 nnrg8geRu8iaHnoZNFTXaSCrv2iaaARqUEl+dTD3TqFvxwPgAosX2DEWvXudMfr/2e7S wN26/BlRFUcdbObEhI25hmw9hCE9sZHCgMnz8TBVAk5aKORYNrv46DzLkrBNLAwV9QBq R4JDgdJA4rJcsxdWhhZ4brk64GacUIvQ812qXCntdgfuN35qnIlXboJBO84jH5M5abmm nyag== X-Received: by 10.42.114.203 with SMTP id h11mr6216271icq.86.1412973225600; Fri, 10 Oct 2014 13:33:45 -0700 (PDT) Received: from hades.digikey.us ([64.77.213.245]) by mx.google.com with ESMTPSA id a2sm2628728igx.4.2014.10.10.13.33.44 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 10 Oct 2014 13:33:44 -0700 (PDT) From: Robert Nelson To: tony@atomide.com, devicetree@vger.kernel.org Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Robert Nelson , Vagrant Cascadian Subject: [PATCH] ARM: dts: am335x-boneblack: set dcdc1 regulator for 1.35v ddr3 Date: Fri, 10 Oct 2014 15:33:39 -0500 Message-Id: <1412973219-3674-1-git-send-email-robertcnelson@gmail.com> X-Mailer: git-send-email 2.1.1 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, 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 The TPS65217C used on the boneblack defaults to 1.5v on startup for dcdc1_reg. While 1.35v ddr3 memory is actually used. This was discovered by a user during a schematic review of his beaglebone-black clone, a u-boot patch will also also be submitted. Signed-off-by: Robert Nelson CC: Tony Lindgren CC: Vagrant Cascadian --- arch/arm/boot/dts/am335x-boneblack.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts index 901739f..e7c8999 100644 --- a/arch/arm/boot/dts/am335x-boneblack.dts +++ b/arch/arm/boot/dts/am335x-boneblack.dts @@ -15,6 +15,13 @@ compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx"; }; +&dcdc1_reg { + /* TPS65217C defaults to 1.5v on powerup while 1.35v DDR3 is used */ + regulator-min-microvolt = <1350000>; + regulator-max-microvolt = <1350000>; + regulator-boot-on; +}; + &ldo3_reg { regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>;