diff --git a/sys/dev/drm/amd/powerplay/smumgr/tonga_smumgr.c b/sys/dev/drm/amd/powerplay/smumgr/tonga_smumgr.c
--- a/sys/dev/drm/amd/powerplay/smumgr/tonga_smumgr.c
+++ b/sys/dev/drm/amd/powerplay/smumgr/tonga_smumgr.c
@@ -1317,7 +1317,8 @@
 	phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table =
 						pptable_info->mm_dep_table;
 
-	table->UvdLevelCount = (uint8_t) (mm_table->count);
+	table->UvdLevelCount = (uint8_t) min(mm_table->count,
+		    (uint32_t)SMU72_MAX_LEVELS_UVD);
 	table->UvdBootLevel = 0;
 
 	for (count = 0; count < table->UvdLevelCount; count++) {
@@ -1377,7 +1378,8 @@
 	phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table =
 						     pptable_info->mm_dep_table;
 
-	table->VceLevelCount = (uint8_t) (mm_table->count);
+	table->VceLevelCount = (uint8_t) min(mm_table->count,
+		    (uint32_t)SMU72_MAX_LEVELS_VCE);
 	table->VceBootLevel = 0;
 
 	for (count = 0; count < table->VceLevelCount; count++) {
@@ -1422,7 +1424,8 @@
 	phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table =
 						    pptable_info->mm_dep_table;
 
-	table->AcpLevelCount = (uint8_t) (mm_table->count);
+	table->AcpLevelCount = (uint8_t) min(mm_table->count,
+		    (uint32_t)SMU72_MAX_LEVELS_ACP);
 	table->AcpBootLevel = 0;
 
 	for (count = 0; count < table->AcpLevelCount; count++) {