doc: release-notes-2.6: Add issue with mbedtls PSA API and TF-M

Adds a note on a known config conflict with mbedtls 2.26.0 and TF-M where the mbedtls PSA APIs can no be enabled at the same time as TF-M. Signed-off-by: Kevin Townsend <[email protected]>
zephyrproject-rtos · May 20, 2021 · 7f89f9d · 7f89f9d
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diff --git a/doc/releases/release-notes-2.6.rst b/doc/releases/release-notes-2.6.rst
@@ -654,6 +654,11 @@ Trusted Firmware-m
  * BL5340 DVK
  * STM32L562E DK
 
+* NOTE: Trusted-Firmware-M can not currently be used with mbedtls 2.26.0 when
+ PSA APIs are enabled in mbedtls (``MBEDTLS_USE_PSA_CRYPTO`` and
+ ``MBEDTLS_PSA_CRYPTO_C``). If both TF-M and mbedtls are required, mbedtls
+ must be used without the PSA APIs. This will be resolved in a future
+ update to mbedtls.
 
 Documentation
 *************