diff --git a/drivers/gpu/drm/amd/display/dc/dm_pp_smu.h b/drivers/gpu/drm/amd/display/dc/dm_pp_smu.h
index 680689cab5dd..c03a441ee638 100644
--- a/drivers/gpu/drm/amd/display/dc/dm_pp_smu.h
+++ b/drivers/gpu/drm/amd/display/dc/dm_pp_smu.h
@@ -44,6 +44,9 @@ enum pp_smu_ver {
 #ifndef CONFIG_TRIM_DRM_AMD_DC_DCN2_0
 	PP_SMU_VER_NV,
 #endif
+#if defined(CONFIG_DRM_AMD_DC_DCN2_1)
+	PP_SMU_VER_RN,
+#endif
 
 	PP_SMU_VER_MAX
 };
@@ -246,6 +249,47 @@ struct pp_smu_funcs_nv {
 };
 #endif
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_1)
+
+#define PP_SMU_NUM_SOCCLK_DPM_LEVELS  8
+#define PP_SMU_NUM_DCFCLK_DPM_LEVELS  4
+#define PP_SMU_NUM_FCLK_DPM_LEVELS    4
+#define PP_SMU_NUM_MEMCLK_DPM_LEVELS  4
+
+struct dpm_clock {
+  uint32_t  Freq;    // In MHz
+  uint32_t  Vol;     // Millivolts with 2 fractional bits
+};
+
+
+/* this is a copy of the structure defined in smuxx_driver_if.h*/
+struct dpm_clocks {
+	struct dpm_clock DcfClocks[PP_SMU_NUM_DCFCLK_DPM_LEVELS];
+	struct dpm_clock SocClocks[PP_SMU_NUM_SOCCLK_DPM_LEVELS];
+	struct dpm_clock FClocks[PP_SMU_NUM_FCLK_DPM_LEVELS];
+	struct dpm_clock MemClocks[PP_SMU_NUM_MEMCLK_DPM_LEVELS];
+};
+
+
+struct pp_smu_funcs_rn {
+	struct pp_smu pp_smu;
+
+	/*
+	 * reader and writer WM's are sent together as part of one table
+	 *
+	 * PPSMC_MSG_SetDriverDramAddrHigh
+	 * PPSMC_MSG_SetDriverDramAddrLow
+	 * PPSMC_MSG_TransferTableDram2Smu
+	 *
+	 */
+	enum pp_smu_status (*set_wm_ranges)(struct pp_smu *pp,
+			struct pp_smu_wm_range_sets *ranges);
+
+	enum pp_smu_status (*get_dpm_clock_table) (struct pp_smu *pp,
+			struct dpm_clocks *clock_table);
+};
+#endif
+
 struct pp_smu_funcs {
 	struct pp_smu ctx;
 	union {
@@ -253,6 +297,9 @@ struct pp_smu_funcs {
 #ifndef CONFIG_TRIM_DRM_AMD_DC_DCN2_0
 		struct pp_smu_funcs_nv nv_funcs;
 #endif
+#if defined(CONFIG_DRM_AMD_DC_DCN2_1)
+		struct pp_smu_funcs_rn rn_funcs;
+#endif
 
 	};
 };