Hi Neil, Thanks for your review comments. On Thu, 16 Jul 2020 at 12:35, Neil Armstrong <narmstrong@xxxxxxxxxxxx> wrote: > > Hi Anand, > > Only the vrtc is able to wakeup the device from suspend, > the external RTC is not capable. > > Neil Now I have two RTC driver registered $ dmesg | grep rtc [ 4.737315] rtc-pcf8563 0-0051: registered as rtc0 [ 4.738763] rtc-pcf8563 0-0051: setting system clock to 2020-07-16T08:00:46 UTC (1594886446) [ 4.790206] meson-vrtc ff8000a8.rtc: registered as rtc1 And there are two nodes # ls /dev/rtc* /dev/rtc /dev/rtc0 /dev/rtc1 So it seames an issue that /dev/rtc0 is not able to handle wakeup events. How can we resolve this issue? # time rtcwake -s 30 -m mem rtcwake: /dev/rtc0 not enabled for wakeup events real 0m0.002s user 0m0.001s sys 0m0.002s -Anand