From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Thu, 31 Jul 2014 09:10:11 +0800 Subject: [PATCH v2 2/2] ARM: smp_scu: enable SCU standby support In-Reply-To: <20140729124410.GI24750@dragon> References: <1406275790-18617-1-git-send-email-shawn.guo@freescale.com> <1406275790-18617-3-git-send-email-shawn.guo@freescale.com> <20140729124410.GI24750@dragon> Message-ID: <20140731011010.GA2171@dragon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 29, 2014 at 08:44:11PM +0800, Shawn Guo wrote: > On Fri, Jul 25, 2014 at 04:09:50PM +0800, Shawn Guo wrote: > > With SCU standby enabled, SCU CLK will be turned off when all processors > > are in WFI mode. And the clock will be turned on when any processor > > leaves WFI mode. > > > > This behavior should be preferable in terms of power efficiency of > > system idle. So let's set the SCU standby bit to enable the support in > > function scu_enable(). > > > > Cortex-A9 earlier than r2p0 has no standby bit in SCU, so we need to > > skip setting the bit for those. > > > > Signed-off-by: Shawn Guo > > If there is no objection on the patch, I will put it into patch tracker > soon. Submitted these two patches as #8121 and #8122. Shawn