diff --git a/Source/hoc-clk/sysmodule/src/soc/gm20b.cpp b/Source/hoc-clk/sysmodule/src/soc/gm20b.cpp
index 47786d15..0210f735 100644
--- a/Source/hoc-clk/sysmodule/src/soc/gm20b.cpp
+++ b/Source/hoc-clk/sysmodule/src/soc/gm20b.cpp
@@ -27,7 +27,9 @@ namespace gm20b {
     #define GPU_SIZE 0x1000000
     #define GPU_TRIM_SYS_GPCPLL_CFG 0x00
     #define GPU_TRIM_SYS_GPCPLL_COEFF 0x04
+    #define GPU_TRIM_SYS_GPCPLL_CFG2 0x08
     #define GPU_TRIM_SYS_GPCPLL_CFG3 0x0C
+    #define GPU_TRIM_SYS_GPCPLL_DVFS0 0x10
     #define GPU_TRIM_SYS_GPCPLL_DVFS1 0x14
     #define GPU_TRIM_SYS_GPCPLL_NDIV_SLOWDOWN 0x1C
     #define GPU_TRIM_SYS_SEL_VCO 0x2C