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Introduce a list of generic reset sources and use them to export the power on reason through sysfs. Update the ABI documentation to describe this new interface. Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> [Miquel Raynal: Follow-up on Kamel's work, 4 years later] Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
13 lines
468 B
Plaintext
13 lines
468 B
Plaintext
What: /sys/devices/platform/.../power_on_reason
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Date: June 2023
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KernelVersion: 6.5
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Contact: Kamel Bouhara <kamel.bouhara@bootlin.com>
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Description: Shows system power on reason. The following strings/reasons can
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be read (the list can be extended):
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"regular power-up", "RTC wakeup", "watchdog timeout",
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"software reset", "reset button action", "CPU clock failure",
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"crystal oscillator failure", "brown-out reset",
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"unknown reason".
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The file is read only.
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