diff --git a/drivers/gpu/drm/amd/powerplay/inc/vega10_ppsmc.h b/drivers/gpu/drm/amd/powerplay/inc/vega10_ppsmc.h
index 90beef35bba2a3fed940a28771ea9cb0a2e390db..254974d3d371ccb5f7a44393dd3b3463e3e73540 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/vega10_ppsmc.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/vega10_ppsmc.h
@@ -122,7 +122,10 @@ typedef uint16_t PPSMC_Result;
 #define PPSMC_MSG_SetFanMinPwm                   0x52
 #define PPSMC_MSG_ConfigureGfxDidt               0x55
 #define PPSMC_MSG_NumOfDisplays                  0x56
-#define PPSMC_Message_Count                      0x57
+#define PPSMC_MSG_ReadSerialNumTop32             0x58
+#define PPSMC_MSG_ReadSerialNumBottom32          0x59
+#define PPSMC_Message_Count                      0x5A
+
 
 typedef int PPSMC_Msg;