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doc: release notes: BT FEM Kconfig removal

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Document what happened to the FEM-related Bluetooth controller Kconfig
options.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
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Martí Bolívar 2021-11-09 09:17:07 -08:00 • committed by Carles Cufí
commit e3a008fb67
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doc/releases/release-notes-3.0.rst
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@ -46,6 +46,29 @@ Changes in this release
Removed APIs in this release:
* The following Kconfig options related to radio front-end modules (FEMs) were
removed:
* ``CONFIG_BT_CTLR_GPIO_PA``
* ``CONFIG_BT_CTLR_GPIO_PA_PIN``
* ``CONFIG_BT_CTLR_GPIO_PA_POL_INV``
* ``CONFIG_BT_CTLR_GPIO_PA_OFFSET``
* ``CONFIG_BT_CTLR_GPIO_LNA``
* ``CONFIG_BT_CTLR_GPIO_LNA_PIN``
* ``CONFIG_BT_CTLR_GPIO_LNA_POL_INV``
* ``CONFIG_BT_CTLR_GPIO_LNA_OFFSET``
* ``CONFIG_BT_CTLR_FEM_NRF21540``
* ``CONFIG_BT_CTLR_GPIO_PDN_PIN``
* ``CONFIG_BT_CTLR_GPIO_PDN_POL_INV``
* ``CONFIG_BT_CTLR_GPIO_CSN_PIN``
* ``CONFIG_BT_CTLR_GPIO_CSN_POL_INV``
* ``CONFIG_BT_CTLR_GPIO_PDN_CSN_OFFSET``
This FEM configuration is hardware description, and was therefore moved to
:ref:`devicetree <dt-guide>`. See the :dtcompatible:`nordic,nrf-radio`
devicetree binding's ``fem`` property for information on what to do instead
on the Nordic open source controller.
Stable API changes in this release
==================================