I am i.MX6UL processor and earlier when I was using kernel "Linux imx6ulevk 4.1.15-1.1.1+gd5d7c02" my board used to wakeup from shutdown if I set the /sys/classrtc/rtc0/wakealarm before shutdown with no problems. But after upgrading kernel to "Linux imx6ulevk 4.1.15-1.2.0+g77f6154" my board is not waking up from shutdown even though everything is same as before except for change in kernel. What can be the reason for this?
Hi Carlos, Actually it was not working earlier also but after NXP help they recommended changing a mask value from 0x61 to 0x6b for
snvs_poweroff: snvs-poweroff in imx6ul.dtsi. But now this doesn't work.
Hi Pratyush,
most likely the problem is the device tree. The drivers in the newest kernel can be referencing the device tree nodes in a different way than the previous kernel, so you need a device tree that matches with the new kernel.
I hope this helps.
Regards,
Carlos
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