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linux-imx/Documentation/ABI/stable/sysfs-devices
Mauro Carvalho Chehab e95d6d8b01 ABI: sysfs-devices: add /dev ABI 
Changeset 23681e4791 ("[PATCH] Driver core: allow struct device to have a dev_t")
added a /dev ABI for /sys/devices. Document it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/bef678e68d1ac8ac504ed6e09f22105b787c877c.1632750608.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-28 12:48:15 +02:00

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Note: This documents additional properties of any device beyond what is documented in Documentation/admin-guide/sysfs-rules.rst

What: /sys/devices/*/of_node Date: February 2015 Contact: Device Tree mailing list devicetree@vger.kernel.org Description: Any device associated with a device-tree node will have an of_path symlink pointing to the corresponding device node in /sys/firmware/devicetree/

What: /sys/devices/*/devspec Date: October 2016 Contact: Device Tree mailing list devicetree@vger.kernel.org Description: If CONFIG_OF is enabled, then this file is present. When read, it returns full name of the device node.

What: /sys/devices/*/obppath Date: October 2016 Contact: Device Tree mailing list devicetree@vger.kernel.org Description: If CONFIG_OF is enabled, then this file is present. When read, it returns full name of the device node.

What: /sys/devices/*/dev Date: Jun 2006 Contact: Greg Kroah-Hartman gregkh@linuxfoundation.org Description: Major and minor numbers of the character device corresponding to the device (in : format).