diff options
| author | Kamel Bouhara <kamel.bouhara@bootlin.com> | 2023-06-20 08:26:57 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2023-07-19 23:15:21 +0200 |
| commit | d40befed9a581740f6ceb0e5998ec2f59bfbc559 (patch) | |
| tree | f3e86211c054264c3cdb4c78318d3ec7dc04c2af /Documentation/ABI | |
| parent | 7b9fc309c0b57c5b1230bf3e0a8bb9e937eb6529 (diff) | |
power: reset: at91-reset: add sysfs interface to the power on reason
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>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-platform-power-on-reason | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-power-on-reason b/Documentation/ABI/testing/sysfs-platform-power-on-reason new file mode 100644 index 000000000000..c3b29dbc64bf --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-power-on-reason @@ -0,0 +1,12 @@ +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. |