From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nishanth Menon <nm@ti.com>
Subject: [PATCH] ARM: OMAP5 / DRA7: Introduce workaround for 801819
Date: Thu, 6 Aug 2015 10:54:24 -0500
Message-ID: <1438876464-15424-1-git-send-email-nm@ti.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org
To: Russell King <rmk+kernel@arm.linux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>
Cc: Nishanth Menon <nm@ti.com>, Richard Woodruff <r-woodruff2@ti.com>, Brad Griffis <bgriffis@ti.com>, Tony Lindgren <tony@atomide.com>, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
List-Id: linux-omap@vger.kernel.org
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