diff --git a/include/services/trp/platform_trp.h b/include/services/trp/platform_trp.h
index 756e9db..67dfff1 100644
--- a/include/services/trp/platform_trp.h
+++ b/include/services/trp/platform_trp.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2025, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -16,4 +16,8 @@
  ******************************************************************************/
 void trp_early_platform_setup(struct rmm_manifest *manifest);
 
+#if RMMD_ENABLE_IDE_KEY_PROG
+uint64_t trp_get_test_rootport(uint64_t *ecam, uint64_t *rootport);
+#endif /* RMMD_ENABLE_IDE_KEY_PROG */
+
 #endif /* PLATFORM_TRP_H */
diff --git a/include/services/trp/trp_helpers.h b/include/services/trp/trp_helpers.h
index 83ec740..2f36720 100644
--- a/include/services/trp/trp_helpers.h
+++ b/include/services/trp/trp_helpers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2022-2025, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -17,7 +17,11 @@
 #define TRP_ARG5		0x28
 #define TRP_ARG6		0x30
 #define TRP_ARG7		0x38
-#define TRP_ARGS_END		0x40
+#define TRP_ARG8		0x40
+#define TRP_ARG9		0x48
+#define TRP_ARG10		0x50
+#define TRP_ARG11		0x58
+#define TRP_ARGS_END		0x60
 
 #ifndef __ASSEMBLER__
 
@@ -35,7 +39,11 @@
 			 uint64_t arg4,
 			 uint64_t arg5,
 			 uint64_t arg6,
-			 uint64_t arg7);
+			 uint64_t arg7,
+			 uint64_t arg8,
+			 uint64_t arg9,
+			 uint64_t arg10,
+			 uint64_t arg11);
 
 __dead2 void trp_boot_abort(uint64_t err);
 
diff --git a/plat/arm/board/fvp/fvp_ide_keymgmt.c b/plat/arm/board/fvp/fvp_ide_keymgmt.c
index 53ed433..ff05351 100644
--- a/plat/arm/board/fvp/fvp_ide_keymgmt.c
+++ b/plat/arm/board/fvp/fvp_ide_keymgmt.c
@@ -44,6 +44,5 @@
 				   uint64_t *cookie)
 {
 	/* placeholder to add further implementation */
-
 	return E_RMM_UNK;
 }
diff --git a/plat/arm/board/fvp/trp/test_ide_km_interface.c b/plat/arm/board/fvp/trp/test_ide_km_interface.c
new file mode 100644
index 0000000..2a1f0e2
--- /dev/null
+++ b/plat/arm/board/fvp/trp/test_ide_km_interface.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <plat/common/platform.h>
+#include <services/trp/platform_trp.h>
+
+#include <platform_def.h>
+
+/*
+ * Helper function for ecam address and root port ID
+ *
+ */
+uint64_t trp_get_test_rootport(uint64_t *ecam_address, uint64_t *rp_id)
+{
+
+	*ecam_address = 0xE001C000;
+	*rp_id = 0x001C0001;
+
+	return 0;
+}
+
diff --git a/plat/arm/board/fvp/trp/trp-fvp.mk b/plat/arm/board/fvp/trp/trp-fvp.mk
index a450541..3c1b96b 100644
--- a/plat/arm/board/fvp/trp/trp-fvp.mk
+++ b/plat/arm/board/fvp/trp/trp-fvp.mk
@@ -6,7 +6,8 @@
 
 # TRP source files specific to FVP platform
 
-RMM_SOURCES		+=	plat/arm/board/fvp/aarch64/fvp_helpers.S
+RMM_SOURCES		+=	plat/arm/board/fvp/aarch64/fvp_helpers.S	\
+				plat/arm/board/fvp/trp/test_ide_km_interface.c
 
 include plat/arm/common/trp/arm_trp.mk
 
diff --git a/services/std_svc/rmmd/trp/trp_entry.S b/services/std_svc/rmmd/trp/trp_entry.S
index 3e1d8c9..a2fd6a0 100644
--- a/services/std_svc/rmmd/trp/trp_entry.S
+++ b/services/std_svc/rmmd/trp/trp_entry.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2021-2025, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -21,6 +21,8 @@
 	 * ---------------------------------------------
 	 */
 	.macro restore_args_call_smc
+	ldp	x10, x11, [x0, #TRP_ARG10]
+	ldp	x8, x9, [x0, #TRP_ARG8]
 	ldp	x6, x7, [x0, #TRP_ARG6]
 	ldp	x4, x5, [x0, #TRP_ARG4]
 	ldp	x2, x3, [x0, #TRP_ARG2]
diff --git a/services/std_svc/rmmd/trp/trp_helpers.c b/services/std_svc/rmmd/trp/trp_helpers.c
index 159f3a5..0607864 100644
--- a/services/std_svc/rmmd/trp/trp_helpers.c
+++ b/services/std_svc/rmmd/trp/trp_helpers.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2022-2025, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -25,7 +25,11 @@
 			uint64_t arg4,
 			uint64_t arg5,
 			uint64_t arg6,
-			uint64_t arg7)
+			uint64_t arg7,
+			uint64_t arg8,
+			uint64_t arg9,
+			uint64_t arg10,
+			uint64_t arg11)
 {
 	uint32_t linear_id;
 	trp_args_t *pcpu_smc_args;
@@ -44,6 +48,10 @@
 	write_trp_arg(pcpu_smc_args, TRP_ARG5, arg5);
 	write_trp_arg(pcpu_smc_args, TRP_ARG6, arg6);
 	write_trp_arg(pcpu_smc_args, TRP_ARG7, arg7);
+	write_trp_arg(pcpu_smc_args, TRP_ARG8, arg8);
+	write_trp_arg(pcpu_smc_args, TRP_ARG9, arg9);
+	write_trp_arg(pcpu_smc_args, TRP_ARG10, arg10);
+	write_trp_arg(pcpu_smc_args, TRP_ARG11, arg11);
 
 	return pcpu_smc_args;
 }
@@ -53,6 +61,6 @@
  */
 __dead2 void trp_boot_abort(uint64_t err)
 {
-	(void)trp_smc(set_smc_args(RMM_BOOT_COMPLETE, err, 0, 0, 0, 0, 0, 0));
+	(void)trp_smc(set_smc_args(RMM_BOOT_COMPLETE, err, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
 	panic();
 }
diff --git a/services/std_svc/rmmd/trp/trp_main.c b/services/std_svc/rmmd/trp/trp_main.c
index b75483c..a82966e 100644
--- a/services/std_svc/rmmd/trp/trp_main.c
+++ b/services/std_svc/rmmd/trp/trp_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2024, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2025, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -15,6 +15,27 @@
 
 #include <platform_def.h>
 
+#define RMI_ERROR_REALM			2U
+#define RMI_ERROR_NOT_SUPPORTED		6U
+
+#define DIR_BIT_SHIFT			0x8
+#define KEYSET_SHIFT			0xC
+#define	STREAM_ID_MASK			0xFF
+#define STREAM_ID_SHIFT			0x0
+#define SUBSTREAM_MASK			0x7
+#define SUBSTREAM_SHIFT			0x8
+
+#define KEY_SET				0x0
+#define	DIR_VAL				0x0
+#define	SUBSTREAM_VAL			0x1
+#define	STREAM_ID			0x1
+
+#define ENCODE_STREAM_INFO(key, dir, substream, stream_id)			\
+		(((key & 0x1) << KEYSET_SHIFT) |				\
+		((dir & 0x1) << DIR_BIT_SHIFT) |				\
+		((substream && SUBSTREAM_MASK) << SUBSTREAM_SHIFT) |		\
+		((stream_id && STREAM_ID_MASK) << STREAM_ID_SHIFT))
+
 /* Parameters received from the previous image */
 static unsigned int trp_boot_abi_version;
 static uintptr_t trp_shared_region_start;
@@ -129,7 +150,7 @@
 {
 	VERBOSE("Delegating granule 0x%llx\n", x1);
 	smc_ret->x[0] = trp_smc(set_smc_args(RMM_GTSI_DELEGATE, x1,
-						0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
+				0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
 
 	if (smc_ret->x[0] != 0ULL) {
 		ERROR("Granule transition from NON-SECURE type to REALM type "
@@ -145,7 +166,7 @@
 {
 	VERBOSE("Undelegating granule 0x%llx\n", x1);
 	smc_ret->x[0] = trp_smc(set_smc_args(RMM_GTSI_UNDELEGATE, x1,
-						0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
+				0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
 
 	if (smc_ret->x[0] != 0ULL) {
 		ERROR("Granule transition from REALM type to NON-SECURE type "
@@ -154,6 +175,62 @@
 }
 
 /*******************************************************************************
+ * Test the IDE Key management interface
+ ******************************************************************************/
+static void trp_ide_keymgmt_interface_fn(unsigned long long x1, unsigned long long x2,
+					struct trp_smc_result *smc_ret)
+{
+	uint64_t ecam_address = 0U, rp_id = 0U, ide_stream_info;
+	uint64_t keyqw0, keyqw1, keyqw2, keyqw3;
+	uint64_t ifvqw0, ifvqw1;
+	int return_value;
+
+#if RMMD_ENABLE_IDE_KEY_PROG
+	trp_get_test_rootport(&ecam_address, &rp_id);
+#endif /* RMMD_ENABLE_IDE_KEY_PROG */
+	/*
+	 * Dummy values for testing:
+	 * Key set = 0x0
+	 * Dir = 0x0
+	 * Substream = 0x1
+	 * Stream ID = 0x1
+	 */
+	ide_stream_info  = ENCODE_STREAM_INFO(KEY_SET, DIR_VAL, SUBSTREAM_VAL, STREAM_ID);
+
+	/* Dummy key and IV values for testing */
+	keyqw0 = 0xA1B2C3D4E5F60708;
+	keyqw1 = 0x1122334455667788;
+	keyqw2 = 0xDEADBEEFCAFEBABE;
+	keyqw3 = 0x1234567890ABCDEF;
+	ifvqw0 = 0xABCDEF0123456789;
+	ifvqw1 = 0x9876543210FEDCBA;
+
+	return_value = trp_smc(set_smc_args(RMM_IDE_KEY_PROG, ecam_address, rp_id,
+				ide_stream_info, keyqw0, keyqw1, keyqw2, keyqw3, ifvqw0,
+				ifvqw1, 0UL, 0UL));
+
+	INFO("return value from RMM_IDE_KEY_PROG = %d\n", return_value);
+
+	return_value = trp_smc(set_smc_args(RMM_IDE_KEY_SET_GO, ecam_address, rp_id,
+				ide_stream_info, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
+
+	INFO("return value from RMM_IDE_KEY_SET_GO = %d\n", return_value);
+
+	return_value = trp_smc(set_smc_args(RMM_IDE_KEY_SET_STOP, ecam_address, rp_id,
+				ide_stream_info, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
+
+	INFO("return value from RMM_IDE_KEY_SET_STOP = %d\n", return_value);
+
+	return_value = trp_smc(set_smc_args(RMM_IDE_KM_PULL_RESPONSE, ecam_address, rp_id,
+				0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL));
+
+	INFO("return value from RMM_IDE_KEY_SET_STOP = %d\n", return_value);
+
+	smc_ret->x[0] = RMI_ERROR_NOT_SUPPORTED;
+
+}
+
+/*******************************************************************************
  * Main RMI SMC handler function
  ******************************************************************************/
 void trp_rmi_handler(unsigned long fid,
@@ -179,6 +256,9 @@
 	case RMI_RMM_GRANULE_UNDELEGATE:
 		trp_asc_mark_nonsecure(x1, smc_ret);
 		break;
+	case RMI_RMM_PDEV_CREATE:
+		trp_ide_keymgmt_interface_fn(x1, x2, smc_ret);
+		break;
 	default:
 		ERROR("Invalid SMC code to %s, FID %lx\n", __func__, fid);
 		smc_ret->x[0] = SMC_UNK;
diff --git a/services/std_svc/rmmd/trp/trp_private.h b/services/std_svc/rmmd/trp/trp_private.h
index d8c6960..16edc5e 100644
--- a/services/std_svc/rmmd/trp/trp_private.h
+++ b/services/std_svc/rmmd/trp/trp_private.h
@@ -28,6 +28,7 @@
 #define RMI_RMM_REQ_VERSION		SMC64_RMI_FID(U(0))
 #define RMI_RMM_GRANULE_DELEGATE	SMC64_RMI_FID(U(1))
 #define RMI_RMM_GRANULE_UNDELEGATE	SMC64_RMI_FID(U(2))
+#define RMI_RMM_PDEV_CREATE		SMC64_RMI_FID(U(0x26))
 
 /* Definitions for RMI VERSION */
 #define RMI_ABI_VERSION_MAJOR		U(0x0)