arm: imx: gpc: do not poweroff M/F mix in suspend

The Colibri iMX6ULL 256MB crashes in resume if the M/F mix domain is
powered down when suspending.
With this workaround this does not happen.

Crash looks as follows:

root@colibri-imx6ull:~# echo +3 > /sys/class/rtc/rtc1/wakealarm; echo mem > /sys/power/state
[   52.800741] PM: Syncing filesystems ... done.
[   52.856715] Freezing user space processes ... (elapsed 0.001 seconds) done.
[   52.865669] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[   52.875024] Suspending console(s) (use no_console_suspend to debug)
[   52.950638] PM: suspend of devices complete after 68.211 msecs
[   52.952506] PM: late suspend of devices complete after 1.835 msecs
[   52.954292] PM: noirq suspend of devices complete after 1.757 msecs
[   52.954300] Disabling non-boot CPUs ...
[   52.954307] Turn off M/F mix!
[   52.955663] PM: noirq resume of devices complete after 1.222 msecs
[   52.956767] imx-sdma 20ec000.sdma: loaded firmware 3.3
[   52.957669] PM: early resume of devices complete after 1.411 msecs
[   52.959140] gpmi-nand 1806000.gpmi-nand: use legacy bch geometry
[   53.005653] Suspended for 2.907 seconds
[   53.012207] PM: resume of devices complete after 54.507 msecs
[   53.073751] Restarting tasks ... done.
root@colibri-imx6ull:~# [   55.049753] gpmi-nand 1806000.gpmi-nand: DMA timeout, last DMA :2
[   55.056377] gpmi-nand 1806000.gpmi-nand: Show GPMI registers :
[   55.062835] gpmi-nand 1806000.gpmi-nand: offset 0x000 : 0x00000000

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

0 files changed, 0 insertions, 0 deletions