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[1/4] docs: dt: Document new bootargs chosen property

Message ID 20240512132513.2831-2-ansuelsmth@gmail.com (mailing list archive)
State New
Headers show
Series of: bootargs handling improvement | expand

Commit Message

Christian Marangi May 12, 2024, 1:25 p.m. UTC 
The bootargs property might be overridden by bootloaders on kernel load,
in such scenario, bootargs-override might be used instead. With
bootargs-override set, any value set in bootargs will be ignored.

The bootargs-append can be used to append additional kernel arguments
to the bootargs property. This can be useful in the context of a
bootargs overridden by the bootloader that contains correct that but
the kernel require additional one to be correctly setup.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 Documentation/devicetree/usage-model.rst | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/Documentation/devicetree/usage-model.rst b/Documentation/devicetree/usage-model.rst
index 0717426856b2..885be3e582fc 100644
--- a/Documentation/devicetree/usage-model.rst
+++ b/Documentation/devicetree/usage-model.rst
@@ -217,6 +217,15 @@  On ARM, the function setup_machine_fdt() is responsible for early
 scanning of the device tree after selecting the correct machine_desc
 that supports the board.
 
+The bootargs property might be overridden by bootloaders on kernel load,
+in such scenario, bootargs-override might be used instead. With
+bootargs-override set, any value set in bootargs will be ignored.
+
+The bootargs-append can be used to append additional kernel arguments
+to the bootargs property. This can be useful in the context of a
+bootargs overridden by the bootloader that contains correct that but
+the kernel require additional one to be correctly setup.
+
 2.4 Device population
 ---------------------
 After the board has been identified, and after the early configuration data