Hello!
I'm trying to add hibernation support to IMX6Q processor module. I've aplied this patch - https://lkml.org/lkml/2014/3/11/486 . The problem is in resuming process. Everything freezes in function
static void notrace arch_restore_image(void *unused)
{
struct pbe *pbe;
cpu_switch_mm(idmap_pgd, &init_mm);
for (pbe = restore_pblist; pbe; pbe = pbe->next)
copy_page(pbe->orig_address, pbe->address);
soft_restart(virt_to_phys(cpu_resume));
}
The program never returns from
for (pbe = restore_pblist; pbe; pbe = pbe->next)
copy_page function is being called about 50000 times and than the process freezes. There are some logs, where number of calls, pbe->orig_address and pbe->address values before freezing are collected:
Start
.......
50627 d4374000 c5a66000
50628 d4373000 c5a67000
50629 d4372000 c5a68000
Freeze
Start
.......
51209 d402b000 c52d7000
Freeze
Start
.......
52882 d402e000 c4cea000
52883 d402d000 c4ceb000
52884 d402c000 c4cec000
52885 d402b000 c4ced000
Freeze
What can be the reason?....
Thank you in advance!
Hello! Sorry for late answer.
We just removed no_console_suspend from kernel command line. After that we got console working and now we see GPU errors there. So everything seems to work fine except GPU driver. We use Android 6 (linux kernel 4.1.15).
Hi John
please try nxp official android releases on
check support way for third parties releases on
https://community.freescale.com/message/402940#402940
================================================================
Best regards
igor
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I use Variscite CustomBoard, so I use official Android release with IMX6 patches from Variscite.
official nxp bsps are located on
i.MX 6 Series Software and Development Tool|NXP
non nxp releases (developed by third parties) are supported by
these third parties tech support. For Variscite bsps please post on
Variscite: Contact Support - Variscite
or meta-fsl-arm mailing list, so that someone familiar with that board
could try to assist you