[PATCH] ARM: smp_scu: Enable standby mode

Will Deacon will.deacon at arm.com
Wed Jul 30 02:43:33 PDT 2014

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 <soren.brinkmann at xilinx.com>
> ---
> 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:



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