diff --git a/plat/st/stm32mp1/include/stm32mp1_mbedtls_config-3.h b/plat/st/stm32mp1/include/stm32mp1_mbedtls_config-3.h
new file mode 100644
index 0000000..d7dab1f
--- /dev/null
+++ b/plat/st/stm32mp1/include/stm32mp1_mbedtls_config-3.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * Key algorithms currently supported on mbed TLS libraries
+ */
+#define TF_MBEDTLS_USE_RSA	0
+#define TF_MBEDTLS_USE_ECDSA	1
+
+/*
+ * Hash algorithms currently supported on mbed TLS libraries
+ */
+#define TF_MBEDTLS_SHA256		1
+#define TF_MBEDTLS_SHA384		2
+#define TF_MBEDTLS_SHA512		3
+
+/*
+ * Configuration file to build mbed TLS with the required features for
+ * Trusted Boot
+ */
+
+#define MBEDTLS_PLATFORM_MEMORY
+#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
+/* Prevent mbed TLS from using snprintf so that it can use tf_snprintf. */
+#define MBEDTLS_PLATFORM_SNPRINTF_ALT
+
+#define MBEDTLS_PKCS1_V21
+
+#define MBEDTLS_ASN1_PARSE_C
+#define MBEDTLS_ASN1_WRITE_C
+
+#define MBEDTLS_BASE64_C
+#define MBEDTLS_BIGNUM_C
+
+#define MBEDTLS_ERROR_C
+#define MBEDTLS_MD_C
+
+#define MBEDTLS_MEMORY_BUFFER_ALLOC_C
+#define MBEDTLS_OID_C
+
+#define MBEDTLS_PK_C
+#define MBEDTLS_PK_PARSE_C
+#define MBEDTLS_PK_WRITE_C
+
+#define MBEDTLS_PLATFORM_C
+
+#if TF_MBEDTLS_USE_ECDSA
+#define MBEDTLS_ECDSA_C
+#define MBEDTLS_ECP_C
+#define MBEDTLS_ECP_DP_SECP256R1_ENABLED
+#endif
+#if TF_MBEDTLS_USE_RSA
+#define MBEDTLS_RSA_C
+#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
+#endif
+
+/* The library does not currently support enabling SHA-256 without SHA-224. */
+#define MBEDTLS_SHA224_C
+#define MBEDTLS_SHA256_C
+
+#if (TF_MBEDTLS_HASH_ALG_ID != TF_MBEDTLS_SHA256)
+#define MBEDTLS_SHA384_C
+#define MBEDTLS_SHA512_C
+#endif
+
+#define MBEDTLS_VERSION_C
+
+#define MBEDTLS_X509_USE_C
+#define MBEDTLS_X509_CRT_PARSE_C
+
+#if TF_MBEDTLS_USE_AES_GCM
+#define MBEDTLS_AES_C
+#define MBEDTLS_CIPHER_C
+#define MBEDTLS_GCM_C
+#endif
+
+/* MPI / BIGNUM options */
+#define MBEDTLS_MPI_WINDOW_SIZE			2
+
+#if TF_MBEDTLS_USE_RSA
+#if TF_MBEDTLS_KEY_SIZE <= 2048
+#define MBEDTLS_MPI_MAX_SIZE			256
+#else
+#define MBEDTLS_MPI_MAX_SIZE			512
+#endif
+#else
+#define MBEDTLS_MPI_MAX_SIZE			256
+#endif
+
+/* Memory buffer allocator options */
+#define MBEDTLS_MEMORY_ALIGN_MULTIPLE		8
+
+/*
+ * Prevent the use of 128-bit division which
+ * creates dependency on external libraries.
+ */
+#define MBEDTLS_NO_UDBL_DIVISION
+
+#ifndef __ASSEMBLER__
+/* System headers required to build mbed TLS with the current configuration */
+#include <stdlib.h>
+#include <mbedtls/check_config.h>
+#endif
+
+/*
+ * Mbed TLS heap size is smal as we only use the asn1
+ * parsing functions
+ * digest, signature and crypto algorithm are done by
+ * other library.
+ */
+
+#define TF_MBEDTLS_HEAP_SIZE           U(5120)