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How to use UART to wake up system?

Question asked by Mason Yen on Apr 24, 2020
Latest reply on May 13, 2020 by ufedor

I tried below command to wake up a custom LS1046a system by UART. But it didn't work. How do I wake up a LS1046a system from UART?

 

root@localhost:~# echo enabled > /sys/devices/platform/soc/21c0500.serial/tty/ttyS0/power/wakeup
root@localhost:~# echo enabled > /sys/devices/platform/soc/21c0600.serial/tty/ttyS1/power/wakeup
root@localhost:~# echo enabled > /sys/devices/platform/soc/21d0500.serial/tty/ttyS2/power/wakeup
root@localhost:~# echo enabled > /sys/devices/platform/soc/21d0600.serial/tty/ttyS3/power/wakeup
root@localhost:~# echo mem > /sys/power/state

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