From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Warren <swarren@wwwdotorg.org>
Subject: Re: [PATCH V2] ARM: tegra: retain L2 content over CPU suspend/resume
Date: Tue, 13 Nov 2012 12:13:07 -0700
Message-ID: <50A29BC3.1020808@wwwdotorg.org>
References: <1352772288-2290-1-git-send-email-josephl@nvidia.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org>
In-Reply-To: <1352772288-2290-1-git-send-email-josephl@nvidia.com>
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-bounces@lists.infradead.org
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org
To: Joseph Lo <josephl@nvidia.com>
Cc: linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org
List-Id: linux-tegra@vger.kernel.org

On 11/12/2012 07:04 PM, Joseph Lo wrote:
> The L2 RAM is in different power domain from the CPU cluster. So the
> L2 content can be retained over CPU suspend/resume. To do that, we
> need to disable L2 after the MMU is disabled, and enable L2 before
> the MMU is enabled. But the L2 controller is in the same power domain
> with the CPU cluster. We need to restore it's settings and re-enable
> it after the power be resumed.

Thanks, applied to Tegra's for-3.8/cpuidle branch.