I've got: /sys/class/rtc/rtc1/wakealarm
but it seems not working, after issuing the following command:
[root@kindle rtc1]# echo 1454713450 > /sys/class/rtc/rtc1/wakealarm
[root@kindle rtc1]# cat /sys/class/rtc/rtc1/wakealarm
...nothing is printed on the screen.
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