From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755462Ab3FRLMx (ORCPT ); Tue, 18 Jun 2013 07:12:53 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:33281 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755200Ab3FRLMG (ORCPT ); Tue, 18 Jun 2013 07:12:06 -0400 From: Roger Quadros To: , CC: , , , , Roger Quadros , Tomi Valkeinen Subject: [PATCH 2/4] ARM: dts: omap4-panda: Fix DVI EDID reads Date: Tue, 18 Jun 2013 14:11:29 +0300 Message-ID: <1371553891-29364-3-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1371553891-29364-1-git-send-email-rogerq@ti.com> References: <1371553891-29364-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Panda the +5V supply for DVI EDID is supplied by the same regulator that poweres the USB Hub. Currently, the DSS/DVI subsystem doesn't know how to manage this regulator and so DVI EDID reads will fail if USB Hub is not enabled. As a temporary fix we keep this regulator permanently enabled on boot. This fixes the DVI EDID read problem. CC: Tomi Valkeinen Signed-off-by: Roger Quadros --- arch/arm/boot/dts/omap4-panda-common.dtsi | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi index 7a21e8e..40df79e 100644 --- a/arch/arm/boot/dts/omap4-panda-common.dtsi +++ b/arch/arm/boot/dts/omap4-panda-common.dtsi @@ -80,6 +80,11 @@ gpio = <&gpio1 1 0>; /* gpio_1 */ startup-delay-us = <70000>; enable-active-high; + /* + * FIXME: Remove boot-on when DSS can handle this regulator + * for DVI EDID. + */ + regulator-boot-on; }; /* HS USB Host PHY on PORT 1 */ -- 1.7.4.1