Update README about USE_PSA_CRYPTO
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/README.md b/README.md
index 275e2dd..49c7580 100644
--- a/README.md
+++ b/README.md
@@ -288,7 +288,7 @@
Mbed TLS includes a reference implementation of the PSA Cryptography API.
This implementation is not yet as mature as the rest of the library. Some parts of the code have not been reviewed as thoroughly, and some parts of the PSA implementation are not yet well optimized for code size.
-The X.509 and TLS code can use PSA cryptography for a limited subset of operations. To enable this support, activate the compilation option `MBEDTLS_USE_PSA_CRYPTO` in `mbedtls_config.h`.
+The X.509 and TLS code can use PSA cryptography for most operations. To enable this support, activate the compilation option `MBEDTLS_USE_PSA_CRYPTO` in `mbedtls_config.h`. Note that TLS 1.3 uses PSA cryptography for most operations regardless of this option. See `docs/use-psa-crypto.md` for details.
There are currently a few deviations where the library does not yet implement the latest version of the specification. Please refer to the [compliance issues on Github](https://github.com/Mbed-TLS/mbedtls/labels/compliance) for an up-to-date list.
