diff --git a/plat/rockchip/rk3399/plat_sip_calls.c b/plat/rockchip/rk3399/plat_sip_calls.c
index 77b7c3e..1a01604 100644
--- a/plat/rockchip/rk3399/plat_sip_calls.c
+++ b/plat/rockchip/rk3399/plat_sip_calls.c
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <cdn_dp.h>
 #include <debug.h>
 #include <mmio.h>
 #include <plat_sip_calls.h>
@@ -22,6 +23,9 @@
 #define DRAM_SET_PARAM		0x07
 #define DRAM_SET_ODT_PD		0x08
 
+#define RK_SIP_HDCP_CONTROL	0x82000009
+#define RK_SIP_HDCP_KEY_DATA64	0xC200000A
+
 uint32_t ddr_smc_handler(uint64_t arg0, uint64_t arg1,
 			 uint64_t id, uint64_t arg2)
 {
@@ -51,9 +55,17 @@
 				   void *handle,
 				   uint64_t flags)
 {
+	uint64_t x5, x6;
+
 	switch (smc_fid) {
 	case RK_SIP_DDR_CFG:
 		SMC_RET1(handle, ddr_smc_handler(x1, x2, x3, x4));
+	case RK_SIP_HDCP_CONTROL:
+		SMC_RET1(handle, dp_hdcp_ctrl(x1));
+	case RK_SIP_HDCP_KEY_DATA64:
+		x5 = read_ctx_reg(get_gpregs_ctx(handle), CTX_GPREG_X5);
+		x6 = read_ctx_reg(get_gpregs_ctx(handle), CTX_GPREG_X6);
+		SMC_RET1(handle, dp_hdcp_store_key(x1, x2, x3, x4, x5, x6));
 	default:
 		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
 		SMC_RET1(handle, SMC_UNK);