From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Wed, 30 Jul 2014 10:43:33 +0100 Subject: [PATCH] ARM: smp_scu: Enable standby mode In-Reply-To: <1406654463-15475-1-git-send-email-soren.brinkmann@xilinx.com> References: <1406654463-15475-1-git-send-email-soren.brinkmann@xilinx.com> Message-ID: <20140730094332.GC12239@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 29, 2014 at 06:21:03PM +0100, Soren Brinkmann wrote: > Enable the SCU standby mode. > From documentation: > When set, SCU CLK is turned off when all processors are in WFI mode, > there is no pending request on the ACP (if implemented), and there is > no remaining activity in the SCU. > > When SCU CLK is off, ARREADYS, AWREADYS and WREADYS on the ACP are forced > LOW. The clock is turned on when any processor leaves WFI mode, or if > there is a new request on the ACP. > > Signed-off-by: Soren Brinkmann > --- > Hi, > > I am working on some PM related patches for Zynq. One of them is > enabling the SCU standby mode. I was wondering whether this is probably > something that I should not do in platform specific code, but rather in > the common code for everybody? Take a look at Shawn's patches for this: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/275326.html Will