diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index d3df9ee..385381f 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1127,6 +1127,20 @@
 #define MBEDTLS_PKCS1_V21
 
 /**
+ * \def MBEDTLS_PSA_CRYPTO_SPM
+ *
+ * When MBEDTLS_PSA_CRYPTO_SPM is defined, the code is built for SPM (Secure
+ * Partition Manager) integration which separates the code into two parts: a
+ * NSPE (Non-Secure Process Environment) and an SPE (Secure Process
+ * Environment).
+ *
+ * Module:  library/psa_crypto.c
+ * Requires: MBEDTLS_PSA_CRYPTO_C
+ *
+ */
+//#define MBEDTLS_PSA_CRYPTO_SPM
+
+/**
  * \def MBEDTLS_RSA_NO_CRT
  *
  * Do not use the Chinese Remainder Theorem