doc: release-notes: inform about SPI CS changes

Inform about the cs field change in struct spi_config. Also mention what drivers must use from now on. Signed-off-by: Gerard Marull-Paretas <[email protected]>
zephyrproject-rtos · Apr 24, 2023 · d291761 · d291761
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commit d291761
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diff --git a/doc/releases/release-notes-3.4.rst b/doc/releases/release-notes-3.4.rst
@@ -172,6 +172,12 @@ Stable API changes in this release
   automatically migrate existing projects can be found in
   :zephyr_file:`scripts/utils/migrate_sys_init.py`.
 
+* Changed :c:struct:`spi_config` ``cs`` (:c:struct:`spi_cs_control`) from
+  pointer to struct member. This allows using the existing SPI dt-spec macros in
+  C++. SPI controller drivers doing ``NULL`` checks on the ``cs`` field to check
+  if CS is GPIO-based or not, must now use :c:func:`spi_cs_is_gpio` or
+  :c:func:`spi_cs_is_gpio_dt` calls.
+
 New APIs in this release
 ========================