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What: /sys/devices/platform/.../power_on_reason
Date: June 2023
KernelVersion: 6.5
Contact: Kamel Bouhara <kamel.bouhara@bootlin.com>
Description: Shows system power on reason. The following strings/reasons can
be read (the list can be extended):
"regular power-up", "RTC wakeup", "watchdog timeout",
"software reset", "reset button action", "CPU clock failure",
"crystal oscillator failure", "brown-out reset",
"unknown reason".
The file is read only.
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