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Add ABI documentation for /sys/class/reboot-mode/*/reboot_modes, a read-only sysfs attribute exposing the list of supported reboot-mode arguments. This file is created by reboot-mode framework and provides a user-readable interface to query available reboot-mode arguments. Reviewed-by: Bartosz Golaszewski <brgl@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Shivendra Pratap <shivendra.pratap@oss.qualcomm.com> Link: https://patch.msgid.link/20260224-next-15nov_expose_sysfs-v24-1-4ee5b49d5a06@oss.qualcomm.com Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
37 lines
1.3 KiB
Plaintext
37 lines
1.3 KiB
Plaintext
What: /sys/class/reboot-mode/<driver>/reboot_modes
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Date: March 2026(TBD)
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KernelVersion: TBD
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Contact: linux-pm@vger.kernel.org
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Description:
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This interface exposes the reboot-mode arguments
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registered with the reboot-mode framework. It is
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a read-only interface and provides a space
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separated list of reboot-mode arguments supported
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on the current platform.
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Example:
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recovery fastboot bootloader
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The exact sysfs path may vary depending on the
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name of the driver that registers the arguments.
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Example:
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/sys/class/reboot-mode/nvmem-reboot-mode/reboot_modes
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/sys/class/reboot-mode/syscon-reboot-mode/reboot_modes
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/sys/class/reboot-mode/qcom-pon/reboot_modes
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The supported arguments can be used by userspace to
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invoke device reset using the standard reboot() system
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call interface, with the "argument" as string to "*arg"
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parameter along with LINUX_REBOOT_CMD_RESTART2.
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A driver can expose the supported arguments by
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registering them with the reboot-mode framework
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using the property names that follow the
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mode-<argument> format.
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Example:
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mode-bootloader, mode-recovery.
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This attribute is useful for scripts or initramfs
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logic that need to programmatically determine
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which reboot-mode arguments are valid before
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triggering a reboot.
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