[PATCH V3] ARM: imx: add cpuidle support for i.mx6sl

[Shawn Guo]

On Thu, Jan 09, 2014 at 04:03:16PM +0800, Anson Huang wrote:
> Add cpuidle support for i.MX6SL, currently only support
> two cpuidle levels(ARM wfi and WAIT mode), and add software
> workaround for WAIT mode errata as below:
> 
> ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
>           during WAIT mode entry process could cause cache memory
>           corruption.
> 
> Software workaround:
>     To prevent this issue from occurring, software should ensure that
> the ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
> entering WAIT mode.
> 
> Signed-off-by: Anson Huang <b20788 at freescale.com>

Applied, thanks.