• Anson Huang's avatar
    ARM: imx: add cpuidle support for i.mx6sl · 751f7e99
    Anson Huang authored
    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: default avatarAnson Huang <b20788@freescale.com>
    Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
    751f7e99
cpuidle.h 696 Bytes