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doc/kernel/drivers: Mention deferred initialization

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Add a section discussing device deferred initialization on the device
model documentation.

Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
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Ederson de Souza 2024-05-08 16:49:40 -07:00 • committed by Anas Nashif
commit 64a373f4ea
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doc/kernel/drivers/index.rst
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@ -373,6 +373,24 @@ Drivers and other system utilities can determine whether startup is
still in pre-kernel states by using the :c:func:`k_is_pre_kernel`
function.
Deferred initialization
***********************
Initialization of devices can also be deferred to a later time. In this case,
the device is not automatically initialized by Zephyr at boot time. Instead,
the device is initialized when the application calls :c:func:`device_init`.
To defer a device driver initialization, add the property ``zephyr,deferred-init``
to the associated device node in the DTS file. For example:
.. code-block:: devicetree
/ {
a-driver@40000000 {
reg = <0x40000000 0x1000>;
zephyr,deferred-init;
};
};
System Drivers
**************