From patchwork Tue Apr 22 18:52:19 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Gerlach X-Patchwork-Id: 4034211 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 C5FE09F319 for ; Tue, 22 Apr 2014 18:56:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CED4720219 for ; Tue, 22 Apr 2014 18:56:00 +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 E9162201ED for ; Tue, 22 Apr 2014 18:55:56 +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 1Wcfoh-0002Gv-4O; Tue, 22 Apr 2014 18:53:15 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WcfoH-0001jX-J8 for linux-arm-kernel@lists.infradead.org; Tue, 22 Apr 2014 18:52:50 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id s3MIqRaR022622; Tue, 22 Apr 2014 13:52:27 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3MIqQb4014119; Tue, 22 Apr 2014 13:52:27 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Tue, 22 Apr 2014 13:52:26 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s3MIqQ5e025166; Tue, 22 Apr 2014 13:52:26 -0500 Received: from localhost (dave-ubuntu.am.dhcp.ti.com [128.247.71.128]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id s3MIqQt17827; Tue, 22 Apr 2014 13:52:26 -0500 (CDT) From: Dave Gerlach To: , Subject: [PATCH] ARM: dts: am437x-gp-evm: Add vtt_fixed regulator Date: Tue, 22 Apr 2014 13:52:19 -0500 Message-ID: <1398192739-8901-2-git-send-email-d-gerlach@ti.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1398192739-8901-1-git-send-email-d-gerlach@ti.com> References: <1398192739-8901-1-git-send-email-d-gerlach@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140422_115249_720409_3DC640BC X-CRM114-Status: UNSURE ( 7.35 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.7 (-----) Cc: Nishanth Menon , devicetree@vger.kernel.org, Dave Gerlach , Tony Lindgren , Rajendra Nayak , Sekhar Nori , Lokesh Vutla , bcousson@baylibre.com 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, 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 VTT regulator for DDR3 termination on the am437x-gp-evm is controlled by a gpio. It is configured by the bootloader so here we define an always-on, fixed voltage regulator to hold the gpio. Signed-off-by: Dave Gerlach --- arch/arm/boot/dts/am437x-gp-evm.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index a055f7f..e68d12c 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -27,6 +27,17 @@ enable-active-high; }; + vtt_fixed: fixedregulator-vtt { + compatible = "regulator-fixed"; + regulator-name = "vtt_fixed"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + regulator-boot-on; + enable-active-high; + gpio = <&gpio5 7 GPIO_ACTIVE_HIGH>; + }; + backlight { compatible = "pwm-backlight"; pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;