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doc: releases: migration-guide: add nRF52/53 regulator changes

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Inform users about Kconfig options deprecation and show what is the
alternative with some examples.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
This commit is contained in:
Gerard Marull-Paretas 2024-06-25 13:40:18 +02:00 • committed by Fabio Baltieri
commit a1fda68003
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41
doc/releases/migration-guide-4.0.rst
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@ -83,6 +83,47 @@ Serial
Regulator
=========
* Internal regulators present in nRF52/53 series can now be configured using
devicetree. The Kconfig options :kconfig:option:`CONFIG_SOC_DCDC_NRF52X`,
:kconfig:option:`CONFIG_SOC_DCDC_NRF52X_HV`,
:kconfig:option:`CONFIG_SOC_DCDC_NRF53X_APP`,
:kconfig:option:`CONFIG_SOC_DCDC_NRF53X_NET` and
:kconfig:option:`CONFIG_SOC_DCDC_NRF53X_HV` selected by board-level Kconfig
options have been deprecated.
Example for nRF52 series:
.. code-block:: devicetree
/* configure REG/REG1 in DC/DC mode */
&reg/reg1 {
regulator-initial-mode = <NRF5X_REG_MODE_DCDC>;
};
/* enable REG0 (HV mode) */
&reg0 {
status = "okay";
};
Example for nRF53 series:
.. code-block:: devicetree
/* configure VREGMAIN in DC/DC mode */
&vregmain {
regulator-initial-mode = <NRF5X_REG_MODE_DCDC>;
};
/* configure VREGRADIO in DC/DC mode */
&vregradio {
regulator-initial-mode = <NRF5X_REG_MODE_DCDC>;
};
/* enable VREGH (HV mode) */
&vregh {
status = "okay";
};
Bluetooth
*********