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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/index.rst | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/index.rst b/Documentation/devicetree/index.rst index 36fa69058d..f85ce6608d 100644 --- a/Documentation/devicetree/index.rst +++ b/Documentation/devicetree/index.rst @@ -151,3 +151,25 @@ Contents: bindings/regulator/* bindings/rtc/* bindings/watchdog/* + +Automatic Boot Argument Fixups to the Devicetree +------------------------------------------------ + +barebox automatically fixes up some boot and system information in the device tree. + +In the device tree root, barebox fixes up + + * serial-number (if available) + * machine compatible (if overridden) + +In the ``chosen``-node, barebox fixes up + + * barebox-version + * reset-source + * reset-source-instance (if available) + * reset-source-device (node-path, only if available) + * bootsource + * boot-hartid (only on RISC-V) + +These values can be read from the booted linux system in ``/proc/device-tree/`` +or ``/sys/firmware/devicetree/base``. |