i.MX53 restart via watchdog does not work

[Fabio Estevam]

On Tue, Apr 19, 2016 at 12:54 PM, Stanislav Meduna
<stanislav.meduna at nxtcontrol.com> wrote:

> After much head-scratching I was able to isolate the problem.
> In fact it has nothing to do with the watchdog or at least
> not directly. The reset is now located in the watchdog
> code itself and gets called normally (which I have
> overlooked when writing the original message).
>
> The probable culprit is the eMMC card being left in some
> state that the bootloader cannot handle. For now I worked
> around it using the patch below (4.4-based), using a device
> tree property to prevent the card from sleeping
> in _mmc_suspend.
>
> I'm not really sure what the 3.9 kernel does differently
> here though...
>
> Could you try to jump around the mmc_sleep(host)
> call in _mmc_suspend to see whether it fixes the problem
> also for you?

Looks like we are having different issues. Just tested on a imx53-qsb
board and it reboots fine with 4.6-rc4.

I am booting via NFS, so not eMMC related.

I will investigate the mx6ul-evk issue.