diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
index 7070aaf9e433f8f4ec8589776fa96131667fdb4f..69ae3a83d2fe907c2b8be9c9f3aa19d221e6f690 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
@@ -393,12 +393,12 @@ void dce110_timing_generator_set_drr(
 		params->vertical_total_min > 0) {
 
 		set_reg_field_value(v_total_max,
-				params->vertical_total_max - 1,
+				params->vertical_total_max,
 				CRTC_V_TOTAL_MAX,
 				CRTC_V_TOTAL_MAX);
 
 		set_reg_field_value(v_total_min,
-				params->vertical_total_min - 1,
+				params->vertical_total_min,
 				CRTC_V_TOTAL_MIN,
 				CRTC_V_TOTAL_MIN);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
index 1318df7ed47e9e8190723b0b7363c90d5214f343..6e3e7b6bc58c72964557dfccda95dec935c52e1b 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
@@ -540,10 +540,10 @@ void dce120_timing_generator_set_drr(
 
 		CRTC_REG_UPDATE(
 				CRTC0_CRTC_V_TOTAL_MIN,
-				CRTC_V_TOTAL_MIN, params->vertical_total_min - 1);
+				CRTC_V_TOTAL_MIN, params->vertical_total_min);
 		CRTC_REG_UPDATE(
 				CRTC0_CRTC_V_TOTAL_MAX,
-				CRTC_V_TOTAL_MAX, params->vertical_total_max - 1);
+				CRTC_V_TOTAL_MAX, params->vertical_total_max);
 		CRTC_REG_SET_N(CRTC0_CRTC_V_TOTAL_CONTROL, 6,
 				FD(CRTC0_CRTC_V_TOTAL_CONTROL__CRTC_V_TOTAL_MIN_SEL), 1,
 				FD(CRTC0_CRTC_V_TOTAL_CONTROL__CRTC_V_TOTAL_MAX_SEL), 1,