diff --git a/scripts/mbedtls_dev/ecp.py b/scripts/mbedtls_dev/ecp.py
index ffe48fc5d9..6d3bb0536b 100644
--- a/scripts/mbedtls_dev/ecp.py
+++ b/scripts/mbedtls_dev/ecp.py
@@ -144,6 +144,86 @@ class EcpP224R1Raw(bignum_common.ModOperationCommon,
     def is_valid(self) -> bool:
         return True
 
+class EcpPp384R1Raw(bignum_common.ModOperationCommon,
+                    EcpTarget):
+    """Test cases for ecp quasi_reduction modulo p384."""
+    test_function = "ecp_mod_p384_raw"
+    test_name = "ecp_mod_p384_raw"
+    input_style = "arch_split"
+    arity = 1
+
+    moduli = [("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+               "fffffeffffffff0000000000000000ffffffff")
+             ] # type: List[str]
+
+    input_values = [
+        "0", "1",
+
+        # Modulus - 1
+        ("fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffef"
+         "fffffff0000000000000000fffffffe"),
+
+        # Maximum canonical P384 multiplication result
+        ("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+         "fdfffffffe0000000000000001fffffffc0000000000000000000000000000000"
+         "10000000200000000fffffffe000000020000000400000000fffffffc00000004"),
+
+        # Testing with overflow in A(12) + A(21) + A(20);
+        ("497811378624857a2c2af60d70583376545484cfae5c812fe2999fc1abb51d18b"
+         "559e8ca3b50aaf263fdf8f24bdfb98fffffffff20e65bf9099e4e73a5e8b517cf"
+         "4fbeb8fd1750fdae6d43f2e53f82d5ffffffffffffffffcc6f1e06111c62e0"),
+
+        # Testing with underflow in A(13) + A(22) + A(23) - A(12) - A(20);
+        ("dfdd25e96777406b3c04b8c7b406f5fcf287e1e576003a092852a6fbe517f2712"
+         "b68abef41dbd35183a0614fb7222606ffffffff84396eee542f18a9189d94396c"
+         "784059c17a9f18f807214ef32f2f10ffffffff8a77fac20000000000000000"),
+
+        # First 8 number generated by random.getrandbits(768) - seed(2,2)
+        ("ffed9235288bc781ae66267594c9c9500925e4749b575bd13653f8dd9b1f282e"
+         "4067c3584ee207f8da94e3e8ab73738fcf1822ffbc6887782b491044d5e34124"
+         "5c6e433715ba2bdd177219d30e7a269fd95bafc8f2a4d27bdcf4bb99f4bea973"),
+        ("e8624fab5186ee32ee8d7ee9770348a05d300cb90706a045defc044a09325626"
+         "e6b58de744ab6cce80877b6f71e1f6d2ef8acd128b4f2fc15f3f57ebf30b94fa"
+         "82523e86feac7eb7dc38f519b91751dacdbd47d364be8049a372db8f6e405d93"),
+        ("fec3f6b32e8d4b8a8f54f8ceacaab39e83844b40ffa9b9f15c14bc4a829e07b0"
+         "829a48d422fe99a22c70501e533c91352d3d854e061b90303b08c6e33c729578"
+         "2d6c797f8f7d9b782a1be9cd8697bbd0e2520e33e44c50556c71c4a66148a86f"),
+        ("bd143fa9b714210c665d7435c1066932f4767f26294365b2721dea3bf63f23d0"
+         "dbe53fcafb2147df5ca495fa5a91c89b97eeab64ca2ce6bc5d3fd983c34c769f"
+         "e89204e2e8168561867e5e15bc01bfce6a27e0dfcbf8754472154e76e4c11ab2"),
+        ("8ebdbfe3eb9ac688b9d39cca91551e8259cc60b17604e4b4e73695c3e652c71a"
+         "74667bffe202849da9643a295a9ac6decbd4d3e2d4dec9ef83f0be4e80371eb9"
+         "7f81375eecc1cb6347733e847d718d733ff98ff387c56473a7a83ee0761ebfd2"),
+        ("d4c0dca8b4c9e755cc9c3adcf515a8234da4daeb4f3f87777ad1f45ae9500ec9"
+         "c5e2486c44a4a8f69dc8db48e86ec9c6e06f291b2a838af8d5c44a4eb3172062"
+         "d08f1bb2531d6460f0caeef038c89b38a8acb5137c9260dc74e088a9b9492f25"),
+        ("227eeb7b9d7d01f5769da05d205bbfcc8c69069134bccd3e1cf4f589f8e4ce0a"
+         "f29d115ef24bd625dd961e6830b54fa7d28f93435339774bb1e386c4fd5079e6"
+         "81b8f5896838b769da59b74a6c3181c81e220df848b1df78feb994a81167346"),
+        ("d322a7353ead4efe440e2b4fda9c025a22f1a83185b98f5fc11e60de1b343f52"
+         "ea748db9e020307aaeb6db2c3a038a709779ac1f45e9dd320c855fdfa7251af0"
+         "930cdbd30f0ad2a81b2d19a2beaa14a7ff3fe32a30ffc4eed0a7bd04e85bfcdd"),
+
+        # Next 2 number generated by random.getrandbits(384)
+        ("5c3747465cc36c270e8a35b10828d569c268a20eb78ac332e5e138e26c4454b9"
+         "0f756132e16dce72f18e859835e1f291"),
+        ("eb2b5693babb7fbb0a76c196067cfdcb11457d9cf45e2fa01d7f427515392480"
+         "0600571fac3a5b263fdf57cd2c006497")
+    ]
+
+    @property
+    def arg_a(self) -> str:
+        hex_digits = bignum_common.hex_digits_for_limb((766 // self.bits_in_limb) + 1,
+                                                       self.bits_in_limb)
+        return super().format_arg('{:x}'.format(self.int_a)).zfill(hex_digits)
+
+    def result(self) -> List[str]:
+        result = self.int_a % self.int_n
+        return [self.format_result(result)]
+
+    @property
+    def is_valid(self) -> bool:
+        return True
 
 class EcpP256R1Raw(bignum_common.ModOperationCommon,
                    EcpTarget):