doc: migration-guide-3.5: LPC DMA dma-channels
Include in migration guide about how the meaning of dma-channels
to the LPC DMA driver has been changed/fixed, which will
affect downstream boards, and information about the new Kconfig
achieving the old functionality of dma-channels.
Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
diff --git a/doc/releases/migration-guide-3.5.rst b/doc/releases/migration-guide-3.5.rst
index 22fa855..57b4086 100644
--- a/doc/releases/migration-guide-3.5.rst
+++ b/doc/releases/migration-guide-3.5.rst
@@ -282,6 +282,13 @@
* The zbus VDED delivery sequence has changed. Check the :ref:`documentation<zbus delivery
sequence>` to verify if it will affect your code.
+* On NXP boards with LPC DMA, the DMA controller node used to have its ``dma-channels`` property
+ set in the board DTS as a way to configure the amount of structures the driver will allocate.
+ This did not match the zephyr dma-controller binding, so this property is now fixed and set
+ in the SOC devicetree definition. Downstream boards should not override this property and
+ instead use the new driver Kconfig
+ :kconfig:option:`CONFIG_DMA_MCUX_LPC_NUMBER_OF_CHANNELS_ALLOCATED`.
+
Recommended Changes
*******************
