diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
index f45e14ada685..cd51c6138894 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
@@ -66,10 +66,12 @@ void dmub_dcn20_reset(struct dmub_srv *dmub)
 {
 	REG_UPDATE(DMCUB_CNTL, DMCUB_SOFT_RESET, 1);
 	REG_UPDATE(DMCUB_CNTL, DMCUB_ENABLE, 0);
+	REG_UPDATE(MMHUBBUB_SOFT_RESET, DMUIF_SOFT_RESET, 1);
 }
 
 void dmub_dcn20_reset_release(struct dmub_srv *dmub)
 {
+	REG_UPDATE(MMHUBBUB_SOFT_RESET, DMUIF_SOFT_RESET, 0);
 	REG_WRITE(DMCUB_SCRATCH15, dmub->psp_version & 0x001100FF);
 	REG_UPDATE_2(DMCUB_CNTL, DMCUB_ENABLE, 1, DMCUB_TRACEPORT_EN, 1);
 	REG_UPDATE(DMCUB_CNTL, DMCUB_SOFT_RESET, 0);
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h
index 68af9b190288..53bfd4da69ad 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h
@@ -91,7 +91,8 @@ struct dmub_srv;
 	DMUB_SR(DMCUB_SCRATCH13) \
 	DMUB_SR(DMCUB_SCRATCH14) \
 	DMUB_SR(DMCUB_SCRATCH15) \
-	DMUB_SR(CC_DC_PIPE_DIS)
+	DMUB_SR(CC_DC_PIPE_DIS) \
+	DMUB_SR(MMHUBBUB_SOFT_RESET)
 
 #define DMUB_COMMON_FIELDS() \
 	DMUB_SF(DMCUB_CNTL, DMCUB_ENABLE) \
@@ -119,7 +120,8 @@ struct dmub_srv;
 	DMUB_SF(DMCUB_REGION3_CW7_TOP_ADDRESS, DMCUB_REGION3_CW7_ENABLE) \
 	DMUB_SF(DMCUB_REGION4_TOP_ADDRESS, DMCUB_REGION4_TOP_ADDRESS) \
 	DMUB_SF(DMCUB_REGION4_TOP_ADDRESS, DMCUB_REGION4_ENABLE) \
-	DMUB_SF(CC_DC_PIPE_DIS, DC_DMCUB_ENABLE)
+	DMUB_SF(CC_DC_PIPE_DIS, DC_DMCUB_ENABLE) \
+	DMUB_SF(MMHUBBUB_SOFT_RESET, DMUIF_SOFT_RESET)
 
 struct dmub_srv_common_reg_offset {
 #define DMUB_SR(reg) uint32_t reg;