From mboxrd@z Thu Jan 1 00:00:00 1970 From: josephl@nvidia.com (Joseph Lo) Date: Tue, 23 Oct 2012 08:42:57 +0800 Subject: [PATCH V2 0/7] ARM: tegra30: cpuidle: add LP2 support In-Reply-To: <1350636526-25920-1-git-send-email-josephl@nvidia.com> References: <1350636526-25920-1-git-send-email-josephl@nvidia.com> Message-ID: <1350952977.23509.5.camel@jlo-ubuntu-64.nvidia.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, 2012-10-19 at 16:48 +0800, Joseph Lo wrote: > The CPU idle LP2 is a power gating idle mode for Tegra30. It supports the > secondary CPUs (i.e., CPU1-CPU3) to go into LP2 dynamically. When any of > the secondary CPUs go into LP2, it can be power gated alone. There is a > limitation on CPU0. The CPU0 can go into LP2 only when all secondary CPUs > are already in LP2. After CPU0 is in LP2, the CPU rail can be turned off. > > Verified on Seaboard(Tegra20) and Cardhu(Tegra30). > > This patch set should depend on these two patches: > d8be3dc ARM: tegra: rename the file of "sleep-tXX" to "sleep-tegraXX" > 01b176e ARM: tegra30: clocks: add AHB and APB clocks > > Previous work can be found at: > V1: > http://www.mail-archive.com/linux-tegra at vger.kernel.org/msg06319.html > Hi Stephen, I need to abandon this patch set. There is a potential issue that will cause CPU0 corruption. I am investigate on this and will get back to you later. Thanks, Joseph